CN119001962B - A detachable packaging structure and method for the optical fiber at the tail end of an intelligent FRP cable for full-length strain distribution monitoring - Google Patents
A detachable packaging structure and method for the optical fiber at the tail end of an intelligent FRP cable for full-length strain distribution monitoringInfo
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- CN119001962B CN119001962B CN202411084286.6A CN202411084286A CN119001962B CN 119001962 B CN119001962 B CN 119001962B CN 202411084286 A CN202411084286 A CN 202411084286A CN 119001962 B CN119001962 B CN 119001962B
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- lead
- sleeve
- optical fiber
- welding
- joint
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2558—Reinforcement of splice joint
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
本发明提出了一种用于全长应变分布监测的智能FRP拉索尾端光纤的可拆卸封装结构及方法，属于智能结构监测领域。解决现有自监测杆封装结构导致拉索的锚固效率降低、锚固区的全长应变监测不完整、封装光纤的存活率低且无法拆卸修复的问题。一种用于全长应变分布监测的智能FRP拉索尾端光纤的可拆卸封装结构，包括：引线区，其内设置有至少一个智能FRP杆，每个智能FRP杆一端从锚杯穿出后封装形成引线区且引线区远离锚杯一端形成有引线光纤；熔接区，其内设置的接头与智能FRP杆对应设置，引线光纤和接头光纤熔接后封装形成熔接区；护筒区，护筒与锚杯同轴布置，护筒近端与锚杯的引线区穿出端壁面可拆卸连接。它主要用于组成拉索结构的一部分。
The present invention proposes a detachable packaging structure and method for the tail end optical fiber of an intelligent FRP cable for full-length strain distribution monitoring, which belongs to the field of intelligent structure monitoring. The invention solves the problems that the existing self-monitoring rod packaging structure leads to reduced anchoring efficiency of the cable, incomplete full-length strain monitoring of the anchoring area, low survival rate of the packaged optical fiber, and inability to be disassembled and repaired. A detachable packaging structure for the tail end optical fiber of an intelligent FRP cable for full-length strain distribution monitoring includes: a lead-in area, in which at least one intelligent FRP rod is arranged, one end of each intelligent FRP rod is packaged to form a lead-in area after passing through an anchor cup, and a lead-in optical fiber is formed at the end of the lead-in area away from the anchor cup; a fusion zone, in which the joint arranged therein corresponds to the intelligent FRP rod, and the lead-in optical fiber and the joint optical fiber are fused and packaged to form a fusion zone; a casing area, in which the casing is coaxially arranged with the anchor cup, and the proximal end of the casing is detachably connected to the wall surface of the lead-in area passing through the anchor cup. It is mainly used to form a part of the cable structure.
Description
Technical Field
The invention belongs to the field of intelligent structure monitoring, and particularly relates to a detachable packaging structure and method for an intelligent FRP inhaul cable tail end optical fiber for full-length strain distribution monitoring.
Background
The inhaul cable structure is a core stress member in engineering such as bridges, large-span spaces and the like. The fiber composite material (FRP) inhaul cable has the advantages of light weight, high strength, corrosion resistance and fatigue resistance, can effectively overcome the defects of heavy weight, easy corrosion and easy fatigue of the traditional steel inhaul cable, and improves the performance and service life of the structure under the conditions of ultra-long span, large tonnage and complex environment. The FRP inhaul cable is woven by a plurality of FRP rods and is anchored at two ends. The FRP rod is prepared from fibers and resin through pultrusion, and common FRP materials comprise carbon fiber composite materials (CFRP), glass fiber composite materials (GFRP), basalt fiber composite materials (BFRP) and the like. However, the FRP material has strong brittleness and may be broken and damaged suddenly, and the FRP material has poor shearing and compression resistance, and improper anchoring may cause shearing or debonding damage of the cable anchoring system. Therefore, the FRP inhaul cable needs to be subjected to long-term health monitoring so as to realize health assessment and disaster early warning of the structure.
The optical fiber monitoring technology can realize long-term monitoring of the strain, the temperature and the vibration change of the surrounding environment through the pre-buried optical fiber, and has the advantages of long service life, high stability, large bandwidth, long distance, small sensor and the like. Simultaneously, the fiber sensor, the fiber and the resin are pulled and extruded together, so that the intelligent FRP rod can be prepared. The intelligent FRP rod has the structural function integrated characteristics of bearing load, realizing environmental monitoring and self FRP material damage monitoring. Currently, commonly used fiber monitoring technologies include fiber grating technology (FBG), weak grating technology (mFRP), brillouin scattering technology (BOTDA/R), and rayleigh scattering optical frequency domain reflection sensing technology (OFDR). In particular to a measuring device developed based on an OFDR technology, the distributed strain monitoring with the highest spatial resolution of 1mm and the highest strain testing precision of +/-1.0 mu epsilon can be realized, and the strain distribution monitoring of the cable anchoring area with short distance and high resolution requirement is hopeful to be realized. Therefore, the intelligent FRP rod is used in the FRP inhaul cable to prepare the intelligent FRP inhaul cable, and long-term nondestructive monitoring of the full-length strain of the inhaul cable including the anchoring area can be realized on the premise of not reducing the bearing capacity of the inhaul cable.
However, in the traditional intelligent FRP cable packaging technology, in order to protect an optical fiber fusion point, the optical fiber fusion point is usually packaged in an anchor cup of an anchor and cured by resin of slurry filled in the anchor cup, so that the anchoring efficiency of the cable anchor can be influenced by an unstressed optical fiber protective sleeve generated by packaging of the optical fiber, the bearing capacity of the cable is reduced, the FRP layer does not exist from the packaging point to the tail end of the anchor, the stress state of the part is obviously different from that of other FRP rods, the strain of an anchoring area obtained by monitoring is incomplete and cannot represent the actual stress state of the anchoring area of the cable, the packaging point in the anchor can be subjected to tensile stress of a loading end of the cable, the optical fiber of the packaging point can be broken, the survival rate of the optical fiber is low, the monitoring function of the cable can be invalid, and once the packaging point is broken, the packaging point cannot be disassembled and reloaded by the resin of the slurry filled in the anchor, and the monitoring function cannot be recovered.
Therefore, a solution is needed that has the characteristics of no influence on the anchoring efficiency of the inhaul cable, realization of monitoring of the total length strain of the inhaul cable including an anchoring area, high survival rate of the optical fiber, repairability after the damage of the optical fiber and the like.
Disclosure of Invention
In view of the above, the invention aims to provide a detachable packaging structure and a method for an intelligent FRP stay cable tail end optical fiber for full-length strain distribution monitoring, so as to solve the problems that the existing self-monitoring rod packaging structure causes the reduction of the anchoring efficiency of the stay cable, the full-length strain monitoring of an anchoring area is incomplete, and the survival rate of the packaged optical fiber is low.
In order to achieve the above object, according to one aspect of the present invention, there is provided a detachable packaging structure for an intelligent FRP cable tail optical fiber for full-length strain distribution monitoring, comprising:
The intelligent FRP rod is arranged in the lead area, one end of each intelligent FRP rod penetrates out of the anchor cup and then is packaged to form the lead area, and one end, far away from the anchor cup, of the lead area is provided with a lead optical fiber;
the welding areas are arranged in the intelligent FRP rods in a one-to-one correspondence manner, one end of each connector penetrates through the end cover at the far end of the protective barrel and then forms connector optical fibers which are arranged opposite to corresponding lead optical fibers, and the lead optical fibers and the connector optical fibers are welded and then packaged to form the welding areas;
The protective barrel zone is internally provided with a protective barrel and an anchor cup which are coaxially arranged, and the proximal end of the protective barrel is detachably connected with the lead zone of the anchor cup by penetrating out of the end wall surface.
Further, the lead fiber is fusion-spliced to the splice core formed at the end of the splice fiber through the lead core formed at the end.
Still further, lead wire district and welding district all set up in the casing sleeve pipe, the coaxial setting of casing sleeve pipe is in the casing and both ends overlap with the preceding backup pad and the back backup pad of casing respectively and link.
Further, the front supporting plate is positioned at the tail end of the anchor cup, the rear supporting plate is positioned at the tail end of the pile casing and penetrates a screw rod arranged at the tail end of the pile casing, and the pile casing sleeve penetrates the front supporting plate and the rear supporting plate and is sealed between the supporting plate and the sealing plate by a sealing ring.
Still further, the packaging structure further comprises a connecting assembly, wherein the connecting assembly is arranged between the sealing ring and the sealing plate, and the joint penetrates through the connecting assembly and is used for transmitting stress of the joint to the sealing plate.
Still further, coupling assembling is resin mold and presents the echelonment, and one end is the cylinder, and the other end is square prism, and cylinder one end setting is between sealing washer and shrouding, and square prism one end is equipped with the shutoff through the sealing cap after passing the through-hole that is unanimous with square prism cross-section on the shrouding, and inside is provided with resin curing back with resin mold and connects and bond. The resin mold is not directly bonded with the through hole of the sealing plate, so that the functions of disassembling and reloading the protection barrel area and the welding area can be realized.
Still further, the lead district still includes lead wire armor sheath, lead wire resin, lead wire sleeve pipe and lead wire pyrocondensation cover, lead wire armor sheath suit is on the lead wire optic fibre, lead wire sleeve pipe suit is at intelligent FRP pole outer wall and with partial lead wire armor sheath holding inside, set up the lead wire resin between lead wire sleeve pipe and the lead wire armor sheath after the lead wire sleeve pipe distal end sets up lead wire pyrocondensation cover and lead wire armor sheath cooperation with the resin encapsulation.
Still further, the welding zone still includes joint armor sheath, butt fusion pyrocondensation pipe, welding resin, butt fusion sleeve pipe and joint pyrocondensation pipe, the butt fusion pyrocondensation pipe both ends cover are established respectively on the joint armor sheath of lead wire armor sheath and joint and are in with lead wire optic fibre and joint optic fibre encapsulation, the butt fusion sleeve pipe cover is established outside the butt fusion pyrocondensation pipe and both ends link to each other with the lead wire armor sheath and the joint armor sheath of corresponding side through a joint pyrocondensation pipe respectively, welding resin sets up in the cavity that lead wire armor sheath outer wall, joint armor sheath outer wall, butt fusion sleeve pipe inner wall and joint pyrocondensation pipe inner wall formed.
According to another aspect of the present invention, there is provided a method of packaging a lead region, comprising the steps of:
s11, stripping the lead optical fiber from the intelligent FRP rod;
S12, sleeving a lead sleeve on the outer side of the FRP rod and supporting the tail end of the original grouting material in the anchor cup;
S13, sleeving a lead armor sheath on the outer layer of the lead optical fiber;
s14, pouring the lead resin into the lead sleeve, sleeving a lead heat shrink sleeve on the end part of the lead sleeve, and heating to realize heat shrink sealing of the end part of the lead sleeve.
According to another aspect of the present invention, there is provided a method of packaging a fusion splice, comprising the steps of:
S21, stripping coating resin on the surfaces of the lead optical fiber and the joint optical fiber to obtain a lead fiber core and a joint fiber core respectively;
s22, welding the lead fiber core and the joint fiber core to form an optical fiber welding point;
S23, sleeving the fusion heat-shrinkable tube on the outer sides of the optical fiber fusion point, the lead armor sheath and the joint armor sheath, and then heating to realize heat-shrinkable packaging of the optical fiber fusion point;
s24, sleeving the welding sleeve on the outer layer of the welding heat-shrinkable tube;
s25, a joint heat shrinkage pipe is sleeved at one end of the welding sleeve, after the heat shrinkage pipe is heated to realize heat shrinkage sealing at one end of the welding sleeve, after welding resin is poured into the welding sleeve, the joint heat shrinkage pipe is sleeved at the other end of the welding sleeve, and then the joint heat shrinkage pipe is heated to realize heat shrinkage sealing at the other end of the welding sleeve.
According to another aspect of the present invention, there is provided a method of packaging a casing section, comprising the steps of:
s31, sleeving the protective sleeve outside the lead area and the welding area, and ensuring that the optical fibers in the protective sleeve area are in an axial straight line state;
S32, sleeving the front supporting plate on the outer side of the casing tube, and clings to the tail end of the anchor cup;
s33, sleeving the protective cylinder outside the lead area and the welding area, and tightly connecting the protective cylinder with the anchor cup through bolts;
s34, sleeving the rear supporting plate into the outer layer of the joint casing sleeve and penetrating through the casing screw;
s35, sleeving the sealing ring on the outer side of the joint armor sheath and tightly attaching the sealing ring to the rear supporting plate;
S36, sleeving the resin mold on the outer side of the joint armor sheath, and tightly attaching the resin mold to the sealing ring;
S37, sleeving the sealing plate into the outer layer of the joint armor sheath, and enabling the resin mold to pass through the sealing plate;
S38, tightening the bolts, and locking the sealing plate to enable the sealing plate to extrude the casing sleeve and the sealing ring so as to realize the sealing and restraint of the structure;
S39, after resin is injected into the resin mold, the sealing cap is sleeved into the resin mold, so that the tail end of the resin mold is sealed, and the resin is fully cured and packaged.
According to another aspect of the present invention, there is provided a method of removably reinstalling the casing section described above, comprising the steps of:
S41, loosening the bolts and detaching the sealing plate from the protective cylinder;
s42, removing the rear supporting plate from the casing sleeve;
s43, removing the protective cylinder from the front supporting plate;
S44, removing the front support plate from the casing sleeve;
S45, detaching the casing sleeve from the lead area and the welding area;
s46, cutting off the welding area so as to facilitate reinstallation;
s47, operating according to the steps S21-S25 to reload the welding area;
S48, operating according to the steps S31-S39 to reload the pile casing area.
Compared with the prior art, the invention has the beneficial effects that:
1. The packaging structure can realize full-length strain monitoring of the anchoring area without affecting the anchoring efficiency of the inhaul cable, and the lead area and the welding area of the intelligent FRP rod are arranged at the outer end of the anchor cup by additionally arranging the protective cylinder at the tail end of the anchor cup so as to prevent the reduction of the anchoring efficiency of the inhaul cable and incomplete full-length strain monitoring of the anchoring area caused by packaging in the anchor cup.
2. The packaging structure can improve the survival rate of packaged optical fibers, wherein the optical fibers are packaged at the rear end of the anchor cup and are not arranged in the anchor cup, so that the optical fibers are not influenced by the load of a tension cable loading end, the two fragile transition positions of the optical fibers at a stripping point and a welding point are protected by arranging the lead wire area and the welding area, the optical fibers in the protection barrel area are ensured to be in an axial straight line state by arranging the lead wire sleeve of the protection barrel area, and the optical fiber connector is prevented from being pulled to the lead wire area and the welding area in the stress process by arranging the resin mold and the resin filling, so that the survival rate of the optical fibers is further improved.
3. The packaging structure can realize disassembly and reassembly repair of the packaging structure, namely, the sealing plate, the bolt and the resin mold of the pile casing area are arranged to prevent the optical fiber from being directly bonded with the pile casing and the anchor cup, so that the disassembly of the pile casing area and the reassembly welding of the welding area are realized, and the repair requirement of the broken optical fiber of the welding area in actual engineering is met.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a cross-sectional view of a detachable packaging structure of an intelligent FRP stay cable tail end optical fiber for full-length strain distribution monitoring according to the present invention;
FIG. 2 is a schematic perspective view of a detachable packaging structure of an intelligent FRP cable tail optical fiber for full-length strain distribution monitoring according to the present invention;
FIG. 3 is a cross-sectional view of a lead area according to the present invention;
FIG. 4 is a cross-sectional view of a fusion zone according to the present invention;
FIG. 5 is a cross-sectional view of a casing section according to the present invention;
FIG. 6 is an enlarged view of a portion of a connection assembly according to the present invention;
FIG. 7 is a schematic diagram illustrating steps of a method for packaging lead areas according to the present invention;
FIG. 8 is a schematic diagram illustrating steps of a method for packaging a fusion zone according to the present invention;
fig. 9 is a schematic diagram of a packaging method of a casing section according to the present invention.
Lead zone 1, lead fiber 101, smart FRP rod 102, lead armor jacket 103, lead resin 104, lead sleeve 105, lead heat shrink 106, lead core 107, fusion zone 2, splice core 201, splice fiber 202, splice armor jacket 203, fusion heat shrink 204, fusion resin 205, fusion sleeve 206, splice heat shrink 207, casing zone 3, casing sleeve 301, front support plate 302, casing 303, rear support plate 304, seal ring 305, resin mold 306, seal plate 307, bolt 308, seal cap 309, anchor cup 4, and splice 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
It should be noted that, the descriptions of the directions of "left", "right", "upper", "lower", "top", "bottom", and the like of the present invention are defined based on the relation of orientations or positions shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the structures must be constructed and operated in a specific orientation, and thus, the present invention should not be construed as being limited thereto. In the description of the present invention, the meaning of "plurality" is two or more unless specifically defined otherwise.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, directly connected, indirectly connected through intervening mediums, or may be in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The first embodiment is as follows:
Referring to the drawings for illustrating the embodiment, according to one aspect of the present invention, there is provided a detachable packaging structure for an intelligent FRP cable tail optical fiber for full-length strain distribution monitoring, comprising:
The intelligent FRP rod comprises a lead zone 1, at least one intelligent FRP rod 102 is arranged in the lead zone 1, one end of each intelligent FRP rod 102 penetrates out of an anchor cup 4 and then is packaged to form the lead zone 1, a lead optical fiber 101 is formed at one end, far away from the anchor cup 4, of the lead zone 1, and the intelligent FRP rod 102 is internally wrapped with the optical fiber. The lead area 1 is specifically located at the tail end of the intelligent FRP rod 102, and through packaging of the lead sleeve 105, the lead armor sheath 103 and the lead resin 104, the transition area protection of the intelligent FRP rod 102 and the lead optical fiber 101 is realized, and meanwhile, the packaging structure is located at the outer side of the anchor cup 4, so that adverse effects on the anchoring efficiency of the anchor cup 4 are avoided.
The welding area 2 is provided with connectors 5 which are arranged in the welding area 2 and correspond to the intelligent FRP rods 102 one by one, one end of each connector 5 passes through the end cover at the far end of the protective barrel 303 and then is provided with a connector optical fiber 202 which is opposite to the corresponding lead optical fiber 101, and the lead optical fiber 101 and the connector optical fiber 202 are welded and then packaged to form the welding area 2. The fusion zone 2 is specifically located at the tail end of the lead optical fiber 101, and the fusion transition point protection of the lead optical fiber 101 and the joint optical fiber 202 is realized by the encapsulation of the fusion heat shrinkage tube 204, the fusion resin 205 and the fusion sleeve 206.
The protective barrel zone 3 is arranged coaxially with the anchor cup 4, the near end of the protective barrel 303 and the lead zone 1 of the anchor cup 4 penetrate out of the end wall surface and are detachably connected through bolts, the protective barrel zone 3 can enable the protective barrel zone 3 body and the anchor cup 4 to be matched to form a bearing component, and therefore the lead zone 1 and the welding zone 2 can be protected in the protective barrel zone 3 from being influenced by external loads, meanwhile, due to the detachable structure of the protective barrel zone 3, repeated installation operation can be carried out on the welding zone 2, the defect that secondary operation and detachment repair cannot be carried out after the protective barrel zone is arranged in the anchor cup 4 is avoided, meanwhile, the detachment, modification and installation efficiency can be improved, and the construction period is shortened. The protection of the lead area 1 and the welding area 2 is realized through the protection sleeve 301, the front support plate 302, the protection sleeve 303 and the rear support plate 304, and meanwhile, the detachable function of the structural protection area 3 and the reinstallation repair of the welding area 2 are realized through the resin mold 306, the sealing plate 307 and the bolts 308.
In this embodiment, the lead fiber 101 is fusion-spliced to the splice core 201 formed at the end of the splice fiber 202 through the lead core 107 formed at the end.
In this embodiment, the lead zone 1 and the welding zone 2 are both disposed in a casing sleeve 301, and the casing sleeve 301 is coaxially disposed in a casing 303 and is sleeved at both ends with a front support plate 302 and a rear support plate 304, respectively. Specifically, front support plate 302 is used to provide support to casing tube 301. The front support plate 302 is specifically abutted against grouting material in the anchor cup 4, and then the front support plate 302 is clamped after the pile casing 303 is connected to the anchor cup 4 through bolts.
In this embodiment, the front support plate 302 is located at the tail end of the anchor cup 4, the rear support plate 304 is located at the tail end of the casing 303 and penetrates the screw of the casing 303, and the casing sleeve 301 penetrates the front support plate 302 and the rear support plate 304 and is sealed by the sealing ring 305 between the support plate 304 and the sealing plate 307.
In this embodiment, the package further comprises a connection assembly disposed between the sealing ring 305 and the sealing plate 307 and through which the joint 5 passes for transmitting the force of the joint 5 to the sealing plate 307. Thereby preventing external load from acting on the lead area 1 and the welding area 2, avoiding the stress of the optical fiber and prolonging the service life of the optical fiber. The sealing ring 305 plays a role of isolating the casing sleeve 301, and the casing sleeve 301 can ensure that the lead area 1 and the welding area 2 are kept in a straight state in the casing area 3, so that a better use state is ensured. The lead sleeve 105, the fusion sleeve 206, and the casing sleeve 301 are all thin-walled metal tubes.
In this embodiment, the connection component is a resin mold 306 and has a stepped shape, one end is a cylinder, the other end is a square prism, one end of the cylinder is disposed between the sealing ring 305 and the sealing plate 307, one end of the square prism passes through the sealing plate 307 and is plugged by the sealing cap 309 after being provided with a through hole with the cross section consistent with that of the square prism, and the resin mold 306 is bonded with the joint 5 after being cured. Therefore, the restriction of the resin mold 306, the internal resin and the joint armor sheath 203 can be realized through the sealing plate 307, so that the fiber joint is prevented from being pulled to the lead zone 1 and the welding zone 2 in the stress process, the survival rate of the fiber is improved, and the functions of disassembling and reassembling the protective barrel zone 3 and the welding zone 2 can be realized because the resin mold 306 is not directly bonded with the through holes of the sealing plate 307.
In this embodiment, the lead zone 1 includes a lead armor sheath 103, a lead resin 104, a lead sleeve 105 and a lead heat shrink sleeve 106, the lead armor sheath 103 is sleeved on the lead optical fiber 101, the lead sleeve 105 is sleeved on the outer wall of the intelligent FRP rod 102 and accommodates part of the lead armor sheath 103 inside, after the lead resin 104 is disposed between the lead sleeve 105 and the lead armor sheath 103, the lead heat shrink sleeve 106 is disposed at the distal end of the lead sleeve 105, and the lead armor sheath 103 is matched with the lead heat shrink sleeve 106 to encapsulate the resin. The thermal shrinkage sleeve 106 is made of thermal shrinkage material, and the thermal shrinkage pipes related to the application are all made of the existing thermal shrinkage pipes in the market. The inner diameter of the lead armor sheath 103 needs to be larger than the outer diameter of the lead optical fiber 101 and smaller than the outer diameter of the FRP rod 102. The inner diameter of the lead sleeve 105 is larger than the outer diameter of the FRP rod 102, and the length is required to be larger than 40mm. The lead heat shrink 106 tightly encapsulates the lead sleeve 105 with the lead armor sheath 103 after heat shrinking.
In this embodiment, the welding area 2 includes a joint armor sheath 203, a welding heat shrink tube 204, a welding resin 205, a welding sleeve 206 and a joint heat shrink tube 207, two ends of the welding heat shrink tube 204 are respectively sleeved on the joint armor sheath 203 of the lead armor sheath 103 and the joint 5 and encapsulate the lead optical fiber 101 and the joint optical fiber 202, the welding sleeve 206 is sleeved outside the welding heat shrink tube 204, two ends of the welding sleeve are respectively connected with the lead armor sheath 103 and the joint armor sheath 203 on the corresponding sides through the joint heat shrink tube 207, and the welding resin 205 is disposed in a cavity formed by the outer wall of the lead armor sheath 103, the outer wall of the joint armor sheath 203, the inner wall of the welding sleeve 206 and the inner wall of the joint heat shrink tube 207. The inner diameter of the welding heat shrinkage tube 204 needs to be larger than the outer diameter of the armor sheath, and the armor sheaths at the two ends need to be wrapped. The inner diameter of the welding sleeve 206 is required to be larger than the outer diameter of the heat-shrinkable tube 204 after heat shrinkage, and the length is required to be larger than 40mm. The joint heat shrink tube 207 tightly encloses the fusion splice tube 206 with the armor sheath after heat shrinking.
In this embodiment, in the pile casing area 3, a front support plate 302, a pile casing 303, a rear support plate 304 and a sealing plate 307 are sequentially disposed from the proximal end to the distal end of the anchor cup 4, the front support plate 302 is clamped on the anchor cup 4 and limited by the pile casing 303, the pile casing 303 is mounted on the anchor cup 4 through bolts, the distal end of the pile casing 303 is integrally provided with studs, openings for the studs to pass through are formed in the rear support plate 304 and the sealing plate 307, after the studs pass through the openings, the bolts 308 are screwed on each stud to complete fixation, and in order to improve stability, the number of the studs is multiple, the application adopts four studs uniformly distributed on circumference to provide a stable connection form. The resin mold 306 is filled with resin, so that the stress of the joint 5 can be transmitted to the sealing plate 307 through the resin and the resin mold 306, and the stress can be prevented from being transmitted to the lead zone 1 and the welding zone 2, and the service life can be prolonged. The inner diameter of the protective sleeve 301 is required to be larger than the outer diameters of the lead area 1 and the welding area 2, and the length is required to be larger than 150mm, so that the optical fiber welding and the secondary welding during disassembly and reassembly are convenient.
According to another aspect of the present invention, there is provided a method of packaging a lead area 1, comprising the steps of:
s11, stripping the lead optical fiber 101 from the intelligent FRP rod 102;
s12, sleeving a lead sleeve 105 on the outer side of the FRP rod 102 and supporting the tail end of the original grouting material in the anchor cup 4, and then clamping the lead sleeve 105 and the FRP rod 102 by pliers;
s13, sleeving a lead armor sheath 103 on the outer layer of the lead optical fiber 101;
S14, pouring the lead resin 104 into the lead sleeve 105, sleeving a lead heat-shrinkable sleeve 106 on the end part of the lead sleeve 105, and heating the lead heat-shrinkable sleeve 106 by flame to realize heat-shrinkable sealing of the end part of the lead sleeve 105.
According to an aspect of the present invention, there is provided a packaging method for a fusion zone 2, comprising the steps of:
s21, stripping coating resin on the surfaces of the lead optical fiber 101 and the joint optical fiber 202 to obtain a lead fiber core 107 and a joint fiber core 201 respectively;
S22, welding the lead fiber core 107 and the joint fiber core 201 through an optical fiber welding machine;
S23, sleeving the fusion heat shrinkage tube 204 into an optical fiber fusion joint, and heating by an optical fiber fusion machine to realize heat shrinkage packaging of the optical fiber fusion joint;
s24, sleeving the welding sleeve 206 on the outer layer of the welding heat shrinkage tube 204;
S25, sleeving a joint heat shrinkage tube 207 on one end of the welding sleeve 206, heating the joint heat shrinkage tube 207 by flame to realize heat shrinkage sealing of one end of the welding sleeve 206, pouring welding resin 205 into the welding sleeve 206, sleeving the joint heat shrinkage tube 207 on the other end of the welding sleeve 206, and heating the joint heat shrinkage tube 207 by flame to realize heat shrinkage sealing of the other end of the welding sleeve 206.
According to another aspect of the present invention, there is provided a method of packaging a casing section 3, comprising the steps of:
S31, sleeving a protective sleeve 301 outside the lead area 1 and the welding area 2, and ensuring that the optical fibers in the protective sleeve area 3 are in an axial straight line state;
S32, sleeving the front support plate 302 into the outer side of the casing sleeve 301 and tightly attaching the tail end of the anchor cup 4;
s33, sleeving the protective cylinder 303 outside the lead zone 1 and the welding zone 2, and tightly connecting the protective cylinder with the anchor cup 4 through bolts 308;
s34, sleeving a rear supporting plate 304 into the outer layer of the joint casing sleeve 301 and penetrating through a screw rod of the casing 303;
S35, sleeving a sealing ring 305 on the outer side of the joint armor sheath 203 and tightly attaching the sealing ring to the rear supporting plate 304;
S36, sleeving a resin mold 306 on the outer side of the joint armor sheath 203 and tightly attaching the resin mold to the sealing ring 305;
s37, sleeving a sealing plate 307 into the outer layer of the joint armor sheath 203, so that a square prism of the resin mold 306 is sleeved into the sealing plate 307;
s38, screwing the bolts 308, so that the sealing plate 307 presses the casing sleeve 301 and the sealing ring 305 to realize the sealing and restraint of the structure;
S39, after resin is injected into the resin mold 306, the sealing cap 309 is sleeved into the resin mold 306, so that the tail end of the resin mold 306 is sealed, and the resin is fully cured and the packaging is completed.
According to another aspect of the invention, there is provided a method for disassembling and reassembling a detachable packaging structure of an intelligent FRP stay cable tail end optical fiber for full-length strain distribution monitoring, comprising the steps of:
S41, loosening the bolts 308 and detaching the sealing plate 307 from the protective cylinder 303;
s42, removing the rear supporting plate 304 from the casing sleeve 301;
S43, removing the protective cylinder 303 from the front supporting plate 302;
s44, removing the front support plate 302 from the casing sleeve 301;
s45, detaching the casing sleeve 301 from the lead zone 1 and the welding zone 2;
s46, cutting off the welding area 2 so as to facilitate reinstallation;
s47, operating according to the steps S21-S25 to reload the welding area 2;
S48, operating according to the steps S31-S39 to reload the casing section 3.
The second embodiment is as follows:
the steps of packaging and reloading the polyimide distributed optical fiber intelligent CFRP inhaul cable are as follows:
1. And (3) lead segment packaging:
s11, stripping polyimide lead optical fibers from an intelligent CFRP rod by a burning method, wherein the length of the optical fibers is 150mm;
S12, sleeving a lead sleeve 105 into the outer side of the CFRP rod and supporting the tail end of the original grouting material in the anchor cup;
s13, sleeving the lead armor sheath 103 on the outer layer of the lead optical fiber;
s14, pouring the lead resin 104 into the lead sleeve 105, sleeving a lead heat-shrinkable sleeve 106 on the end part of the lead sleeve 105, and heating the lead heat-shrinkable sleeve 106 by flame to realize heat-shrinkable sealing of the end part of the lead sleeve 105.
2. And (5) packaging a welding section:
s21, stripping coating resin on the surfaces of the lead optical fiber 101 and the joint optical fiber to obtain a lead fiber core 107 and a joint fiber core 201 respectively;
S22, welding the lead fiber core 107 and the joint fiber core 201 through an optical fiber welding machine;
S23, sleeving the fusion heat shrinkage tube 204 into an optical fiber fusion joint, and heating by an optical fiber fusion machine to realize heat shrinkage packaging of the optical fiber fusion joint;
S24, sleeving the welding sleeve 206 on the outer layer of the welding heat-shrinkable tube;
s25, sleeving a joint heat shrinkage tube 207 on one end of the welding sleeve 206, heating the joint heat shrinkage tube 207 by flame to realize heat shrinkage sealing of one end of the welding sleeve 206, pouring welding resin 205 into the welding sleeve 206, sleeving the joint heat shrinkage tube 207 on the other end of the welding sleeve 206, and heating the joint heat shrinkage tube 207 by flame to realize heat shrinkage sealing of the other end of the welding sleeve 206.
3. And (5) packaging a pile casing area:
S31, sleeving a protective sleeve 301 outside the lead area 1 and the welding area 2, and ensuring that the optical fibers in the protective sleeve area 3 are in an axial straight line state;
S32, sleeving the front support plate 302 into the outer side of the casing sleeve 301 and tightly attaching the tail end of the anchor cup 4;
s33, sleeving the protective cylinder 303 outside the lead area 1 and the welding area 1, and tightly connecting the protective cylinder with the anchor cup 4 through bolts 308;
S34, sleeving the rear supporting plate 304 into the outer layer of the casing sleeve 301 and penetrating through the casing screw;
S35, sleeving a sealing ring 305 on the outer side of the joint armor sheath 203 and tightly attaching the sealing ring to the rear supporting plate 304;
S36, sleeving a resin mold 306 on the outer side of the joint armor sheath 203 and tightly attaching the resin mold to the sealing ring 305;
s37, sleeving a sealing plate 307 into the outer layer of the joint armor sheath 203, so that a square prism of the resin mold is sleeved into an opening of the sealing plate 307;
s38, tightening the bolts 308, and locking the sealing plate 307 to enable the sealing plate 307 to squeeze the casing sleeve 301 and the sealing ring 305, so that sealing and restraint of the structure are realized;
S39, after resin is injected into the resin mold 306, the sealing cap 309 is sleeved into the resin mold 306, so that the tail end of the resin mold 306 is sealed, and the resin is fully cured and the packaging is completed.
4. And (3) structural disassembly and reassembly:
S41, loosening the bolts 308 and detaching the sealing plate 307 from the protective cylinder 303;
s42, removing the rear supporting plate 304 from the casing sleeve 301;
s43, removing the protective cylinder from the front support plate 302;
s44, removing the front support plate 302 from the casing sleeve 301;
s45, detaching the casing sleeve 301 from the lead zone 1 and the welding zone 2;
s46, cutting off the welding area 2 so as to facilitate reinstallation;
s47, operating according to the steps S21-S25 to reload the welding area 2;
S48, operating according to the steps S31-S39 to reload the casing section 3.
And a third specific embodiment:
The steps of packaging and reloading the teflon tightly-packaged distributed optical fiber intelligent GFRP inhaul cable are as follows:
1. And (3) lead segment packaging:
S11, stripping the teflon tightly-wrapped lead optical fiber from the intelligent GFRP rod by a sheath stripping method, wherein the length of the optical fiber is 200mm;
s12, sleeving a lead sleeve 105 on the outer side of the GFRP rod and supporting the tail end of the original grouting material in the anchor cup 4;
s13, sleeving a lead armor sheath 103 on the outer layer of the lead optical fiber 101;
S14, pouring the lead resin 104 into the lead sleeve 105, sleeving a lead heat-shrinkable sleeve 106 on the end part of the lead sleeve 105, and heating the lead heat-shrinkable sleeve 106 by flame to realize heat-shrinkable sealing of the end part of the lead sleeve 105.
2. And (5) packaging a welding section:
s21, stripping coating resin on the surfaces of the lead optical fiber 101 and the joint optical fiber to obtain a lead fiber core 107 and a joint fiber core 201 respectively;
S22, welding the lead fiber core 107 and the joint fiber core 201 through an optical fiber welding machine;
S23, sleeving the fusion heat shrinkage tube 204 into an optical fiber fusion joint, and heating by an optical fiber fusion machine to realize heat shrinkage packaging of the optical fiber fusion joint;
S24, sleeving the welding sleeve 206 on the outer layer of the welding heat-shrinkable tube;
s25, sleeving a joint heat shrinkage tube 207 on one end of the welding sleeve 206, heating the joint heat shrinkage tube 207 by flame to realize heat shrinkage sealing of one end of the welding sleeve 206, pouring welding resin 205 into the welding sleeve 206, sleeving the joint heat shrinkage tube 207 on the other end of the welding sleeve 206, and heating the joint heat shrinkage tube 207 by flame to realize heat shrinkage sealing of the other end of the welding sleeve 206.
3. And (5) packaging a pile casing area:
S31, sleeving a protective sleeve 301 outside the lead area 1 and the welding area 2, and ensuring that the optical fibers in the protective sleeve area 3 are in an axial straight line state;
S32, sleeving the front support plate 302 into the outer side of the casing sleeve 301 and tightly attaching the tail end of the anchor cup 4;
s33, sleeving the protective cylinder 303 outside the lead area 1 and the welding area 1, and tightly connecting the protective cylinder with the anchor cup 4 through bolts 308;
S34, sleeving the rear supporting plate 304 into the outer layer of the casing sleeve 301 and penetrating through the casing screw;
S35, sleeving a sealing ring 305 on the outer side of the joint armor sheath 203 and tightly attaching the sealing ring to the rear supporting plate 304;
S36, sleeving a resin mold 306 on the outer side of the joint armor sheath 203 and tightly attaching the resin mold to the sealing ring 305;
s37, sleeving a sealing plate 307 into the outer layer of the joint armor sheath 203, so that a square prism of the resin mold is sleeved into an opening of the sealing plate 307;
s38, tightening the bolts 308, and locking the sealing plate 307 to enable the sealing plate 307 to squeeze the casing sleeve 301 and the sealing ring 305, so that sealing and restraint of the structure are realized;
S39, after resin is injected into the resin mold 306, the sealing cap 309 is sleeved into the resin mold 306, so that the tail end of the resin mold 306 is sealed, and the resin is fully cured and the packaging is completed.
4. And (3) structural disassembly and reassembly:
S41, loosening the bolts 308 and detaching the sealing plate 307 from the protective cylinder 303;
s42, removing the rear supporting plate 304 from the casing sleeve 301;
s43, removing the protective cylinder from the front support plate 302;
s44, removing the front support plate 302 from the casing sleeve 301;
s45, detaching the casing sleeve 301 from the lead zone 1 and the welding zone 2;
s46, cutting off the welding area 2 so as to facilitate reinstallation;
s47, operating according to the steps S21-S25 to reload the welding area 2;
S48, operating according to the steps S31-S39 to reload the casing section 3.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (8)
1. A can dismantle packaging structure that is used for intelligent FRP cable tail end optic fibre of full length strain distribution monitoring, a serial communication port includes:
The intelligent FRP rod comprises a lead area (1), wherein at least one intelligent FRP rod (102) is arranged in the lead area, one end of each intelligent FRP rod (102) penetrates out of an anchor cup (4) and then is packaged to form the lead area (1), and one end, far away from the anchor cup (4), of the lead area (1) is provided with a lead optical fiber (101);
The welding area (2) is provided with connectors (5) which are arranged in the welding area and correspond to the intelligent FRP rods (102) one by one, one end of each connector (5) passes through the far-end cover of the protective barrel (303) and then forms a connector optical fiber (202) which is arranged opposite to the corresponding lead optical fiber (101), and the lead optical fiber (101) and the connector optical fiber (202) are welded and then packaged to form the welding area (2);
The protective cylinder (303) is arranged in the protective cylinder zone (3) and is coaxial with the anchor cup (4), and the proximal end of the protective cylinder (303) is detachably connected with the lead zone (1) of the anchor cup (4) penetrating out of the end wall surface;
The lead area (1) and the welding area (2) are both arranged in the protective sleeve (301), the protective sleeve (301) is coaxially arranged in the protective sleeve (303), and the two ends of the protective sleeve are respectively sleeved with the front supporting plate (302) and the rear supporting plate (304) of the protective sleeve (303);
the front supporting plate (302) is positioned at the tail end of the anchor cup (4), the rear supporting plate (304) is positioned at the tail end of the pile casing (303) and penetrates into a screw rod arranged at the tail end of the pile casing (303), and the pile casing sleeve (301) penetrates through the front supporting plate (302) and the rear supporting plate (304) and is sealed between the rear supporting plate (304) and the sealing plate (307) by a sealing ring (305);
The packaging structure further comprises a connecting assembly, wherein the connecting assembly is arranged between the sealing ring (305) and the sealing plate (307) and the joint (5) passes through the connecting assembly and is used for transmitting the stress of the joint (5) to the sealing plate (307);
The connecting component is a resin mold (306) and is in a ladder shape, one end of the connecting component is a cylinder, the other end of the connecting component is a square prism, one end of the cylinder is arranged between the sealing ring (305) and the sealing plate (307), one end of the square prism penetrates through a through hole which is consistent with the cross section of the square prism and is sealed by the sealing cap (309), the resin mold (306) is bonded with the joint (5) after the resin is solidified, so that the restraint on the resin mold (306), the internal resin and the joint armor sheath (203) can be realized through the sealing plate (307), the fiber joint is prevented from being pulled to a lead area (1) and a welding area (2) in the stress process, the survival rate of the fiber is improved, and the detachable and reloading functions of the protection cylinder area (3) and the welding area (2) can be realized because the resin mold (306) is not directly bonded with the through hole of the sealing plate (307).
2. The detachable packaging structure of the intelligent FRP stay cable tail end optical fiber for full-length strain distribution monitoring according to claim 1, wherein the lead optical fiber (101) is welded with a joint fiber core (201) formed at the end part of the joint optical fiber (202) through a lead fiber core (107) formed at the end part.
3. The detachable packaging structure for the tail end optical fiber of the intelligent FRP inhaul cable for monitoring the full-length strain distribution, which is disclosed in claim 1, is characterized in that the lead area (1) further comprises a lead armor sheath (103), lead resin (104), a lead sleeve (105) and a lead heat shrinkage sleeve (106), the lead armor sheath (103) is sleeved on the lead optical fiber (101), the lead sleeve (105) is sleeved on the outer wall of the intelligent FRP rod (102) and accommodates part of the lead armor sheath (103) inside, and after the lead resin (104) is arranged between the lead sleeve (105) and the lead armor sheath (103), the lead heat shrinkage sleeve (106) is arranged at the far end of the lead sleeve (105) to be matched with the lead armor sheath (103) for packaging the resin.
4. The detachable packaging structure for the tail end optical fiber of the intelligent FRP inhaul cable for monitoring the full-length strain distribution is characterized in that the welding area (2) further comprises a joint armor sheath (203), a welding heat shrinkage tube (204), welding resin (205), a welding sleeve (206) and a joint heat shrinkage tube (207), two ends of the welding heat shrinkage tube (204) are respectively sleeved on the joint armor sheath (203) of the lead armor sheath (103) and the joint (5) and encapsulate the lead optical fiber (101) and the joint optical fiber (202) in, the welding sleeve (206) is sleeved outside the welding heat shrinkage tube (204) and two ends of the welding sleeve are respectively connected with the lead armor sheath (103) and the joint armor sheath (203) on the corresponding side through one joint heat shrinkage tube (207), and the welding resin (205) is arranged in a cavity formed by the outer wall of the lead armor sheath (103), the outer wall of the joint armor sheath (203), the inner wall of the welding sleeve (206) and the inner wall of the joint heat shrinkage tube (207).
5. A method for packaging a detachable packaging structure of an intelligent FRP cable tail optical fiber for full-length strain distribution monitoring according to claim 1, wherein the method for packaging the lead area comprises the following steps:
s11, stripping the lead optical fiber (101) from the intelligent FRP rod (102);
s12, sleeving a lead sleeve (105) on the outer side of the intelligent FRP rod (102) and supporting the tail end of the original grouting material in the anchor cup (4);
S13, sleeving a lead armor sheath (103) on the outer layer of the lead optical fiber (101);
S14, pouring the lead resin (104) into the lead sleeve (105), sleeving a lead heat shrink sleeve (106) on the end part of the lead sleeve (105), and heating to realize heat shrink sealing of the end part of the lead sleeve (105).
6. A method for packaging a detachable packaging structure of an intelligent FRP cable tail optical fiber for full-length strain distribution monitoring according to claim 1, wherein the method for packaging a fusion zone comprises the following steps:
s21, stripping coating resin on the surfaces of the lead optical fiber (101) and the joint optical fiber (202) to obtain a lead fiber core (107) and a joint fiber core (201) respectively;
S22, welding the lead fiber core (107) and the joint fiber core (201) to form an optical fiber welding point;
S23, sleeving a fusion heat shrinkage tube (204) on the outer sides of the optical fiber fusion point, the lead armor sheath (103) and the joint armor sheath (203) and then heating to realize heat shrinkage packaging of the optical fiber fusion point;
S24, sleeving the welding sleeve (206) on the outer layer of the welding heat shrinkage tube (204);
S25, one end of the welding sleeve (206) is sleeved with a joint heat shrinkage pipe (207), after the heat shrinkage sealing of one end of the welding sleeve (206) is realized by heating the joint heat shrinkage pipe (207), after the welding resin (205) is poured into the welding sleeve (206), the other end of the welding sleeve (206) is sleeved with the joint heat shrinkage pipe (207), and then the heat shrinkage sealing of the other end of the welding sleeve (206) is realized by heating the joint heat shrinkage pipe (207).
7. A method for packaging a detachable packaging structure of an intelligent FRP cable tail optical fiber for full-length strain distribution monitoring according to claim 1, wherein the packaging method of the casing section comprises the following steps:
S31, sleeving a protective sleeve (301) on the outer sides of the lead area (1) and the welding area (2) to ensure that the optical fibers in the protective sleeve area (3) are in an axial straight line state;
s32, sleeving the front supporting plate (302) on the outer side of the casing sleeve (301) and tightly attaching the tail end of the anchor cup (4);
s33, sleeving the protective cylinder (303) on the outer sides of the lead area (1) and the welding area (2), and tightly connecting the protective cylinder with the anchor cup (4) through bolts (308);
s34, sleeving a rear supporting plate (304) into the outer layer of the joint casing sleeve (301) and penetrating through a screw rod of the casing (303);
s35, sleeving a sealing ring (305) on the outer side of the joint armor sheath (203) and tightly attaching the sealing ring to the rear supporting plate (304);
S36, sleeving a resin mold (306) on the outer side of the joint armor sheath (203) and tightly attaching the resin mold to the sealing ring (305);
s37, sleeving a sealing plate (307) into the outer layer of the joint armor sheath (203), and enabling a resin mold (306) to penetrate through the sealing plate (307);
s38, tightening the bolts (308), and locking the sealing plate (307) to enable the sealing plate (307) to squeeze the casing sleeve (301) and the sealing ring (305) so as to realize the sealing and restraint of the structure;
S39, after resin is injected into the resin mold (306), the sealing cap (309) is sleeved into the resin mold (306), so that the tail end of the resin mold (306) is sealed, and the resin is fully cured and the packaging is completed.
8. A method for removably reinstalling a removable package structure for a fiber at the tail end of an intelligent FRP cable for full length strain distribution monitoring as defined in claim 1, wherein the method for removably reinstalling the casing section comprises the steps of:
S41, loosening the bolts (308) and detaching the sealing plate (307) from the protective cylinder (303);
s42, detaching the rear supporting plate (304) from the casing sleeve (301);
s43, removing the protective cylinder (303) from the front supporting plate (302);
s44, removing the front support plate (302) from the casing sleeve (301);
s45, detaching the casing sleeve (301) from the lead area (1) and the welding area (2);
s46, cutting off the welding area (2) to facilitate reinstallation;
S47, operating according to the steps S21-S25 to reload the welding area (2);
S48, operating according to the steps S31-S39 to reload the pile casing area (3).
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| CN202411084286.6A CN119001962B (en) | 2024-08-08 | 2024-08-08 | A detachable packaging structure and method for the optical fiber at the tail end of an intelligent FRP cable for full-length strain distribution monitoring |
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| CN202411084286.6A CN119001962B (en) | 2024-08-08 | 2024-08-08 | A detachable packaging structure and method for the optical fiber at the tail end of an intelligent FRP cable for full-length strain distribution monitoring |
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| CN200992682Y (en) * | 2006-12-29 | 2007-12-19 | 柳州欧维姆机械股份有限公司 | Cold-cast pier anchor cable implanting optical fiber grating reinforced smart bars |
| CN101701450B (en) * | 2009-09-30 | 2011-12-21 | 法尔胜集团公司 | Bridge intelligent cable system with built-in fiber grating sensor |
| CN206095309U (en) * | 2016-10-12 | 2017-04-12 | 江苏建筑职业技术学院 | Bridge suspension cable built -in optical fiber grating sensor packaging hardware |
| CN109183617A (en) * | 2018-08-28 | 2019-01-11 | 法尔胜泓昇集团有限公司 | Cable strand for main cable containing carbon fiber composite material intelligent rib and installation method |
| CN211571400U (en) * | 2019-12-22 | 2020-09-25 | 智性纤维复合加固南通有限公司 | Intelligence extrusion cable protection architecture that goes out line |
| CN113607554B (en) * | 2021-06-16 | 2023-08-04 | 中国地质调查局武汉地质调查中心 | Basalt fiber reinforced anchor rope comprehensive anchoring performance testing device and method |
| CN117144794A (en) * | 2023-08-16 | 2023-12-01 | 中国建筑第八工程局有限公司 | Intelligent cable with rear-mounted sensing unit |
| CN220789426U (en) * | 2023-09-12 | 2024-04-16 | 中交第二航务工程局有限公司 | Parallel steel wire inhaul cable embedded with array type fiber bragg grating sensor |
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| 光纤光栅智能复合筋传感特性及其工程应用;李冬生 等;光电子.激光;20091031;第20卷(第10期);第1294-1297页 * |
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