CN112627375A - Shock isolation device and shock isolation system - Google Patents
Shock isolation device and shock isolation system Download PDFInfo
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- CN112627375A CN112627375A CN202011331604.6A CN202011331604A CN112627375A CN 112627375 A CN112627375 A CN 112627375A CN 202011331604 A CN202011331604 A CN 202011331604A CN 112627375 A CN112627375 A CN 112627375A
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- plate
- seismic isolation
- top plate
- bottom plate
- isolation structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a shock isolation device which is arranged between two side walls and used for horizontal shock isolation and comprises a top plate, a bottom plate, springs and a viscous damper, wherein the top plate is connected with one side wall of the two side walls, the bottom plate is connected with the other side wall, the viscous damper is arranged between the top plate and the bottom plate, two ends of the viscous damper are respectively abutted against the top plate and the bottom plate, the number of the springs is multiple, the springs are arranged in parallel, the springs are uniformly distributed outside the viscous damper, and two ends of each spring are respectively abutted against the top plate and the bottom plate. Correspondingly, the invention also provides a shock insulation system. The shock isolation device can prevent a shock isolation structure from generating a large horizontal swinging effect.
Description
Technical Field
The invention particularly relates to a vibration isolation device and a vibration isolation system comprising the same.
Background
In a conventional seismic isolation system, a laminated rubber bearing is often arranged at the bottom of a seismic isolation structure to achieve seismic isolation. In this kind of shock insulation system, the barycenter of shock insulation structure all is higher than the shock insulation layer, and horizontal swing effect can inevitably appear in the shock insulation structure, and the concrete performance is when taking place the earthquake, and the change of tensile compression stress can appear along with the reciprocating motion on ground in the shock insulation support.
For areas with lower earthquake level, the shock insulation structure with the smaller height-width ratio is adopted, and the horizontal swing effect is smaller, so that the tensile and compressive stress of the shock insulation support can be controlled within the standard limit value, and the shock insulation effect cannot be obviously influenced. However, in some areas with high earthquake level, if some internal structures with high importance and large aspect ratio exist, such as a reactor pool in a thermal nuclear reactor, the conventional seismic isolation system adopted in the structures often causes the problem of excessive horizontal oscillation effect, and then causes excessive tensile stress to the laminated rubber support. When the laminated rubber support is pulled, a plurality of micropores are formed inside the laminated rubber support, the mechanical property of the laminated rubber support is reduced due to internal damage, and when the tensile stress exceeds a limit value, the laminated rubber support is even damaged, so that the serious consequence of overturning of the seismic isolation structure is finally caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a shock isolation device for preventing a shock isolation structure from generating a larger horizontal swinging effect and a shock isolation system comprising the shock isolation device, aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a seismic isolation device arranged between two side walls for horizontal seismic isolation comprises a top plate, a bottom plate, a spring and a viscous damper,
the top plate is connected with one side wall of the two side walls, the bottom plate is connected with the other side wall,
the viscous damper is arranged between the top plate and the bottom plate, two ends of the viscous damper are respectively propped against the top plate and the bottom plate,
the quantity of spring is many for parallel arrangement, and many spring evenly distributed are in viscous damper's outside, the both ends of every spring respectively with the roof with the bottom plate offsets.
Preferably, the device further comprises a guide sleeve rod, the guide sleeve rod penetrates through the space between the top plate and the bottom plate, the number of the guide sleeve rod is the same as that of the springs, and a single spring is sleeved on the single guide sleeve rod.
Preferably, the top plate is connected to one of the two side walls by an anchor screw, the bottom plate is also connected to the other side wall by an anchor screw,
the shock insulation device further comprises a universal joint assembly, and the universal joint assembly is arranged between the top plate and the anchoring screw rod and/or between the bottom plate and the anchoring screw rod.
The invention also provides a shock insulation system which comprises a shock insulation structure and the shock insulation device, wherein the shock insulation structure is arranged in the non-shock insulation structure, a shock insulation groove is formed by a gap between the shock insulation structure and the non-shock insulation structure, and the shock insulation device is arranged in the shock insulation groove.
Preferably, the vibration isolation devices are arranged in a plurality of symmetrical vibration isolation grooves which are oppositely arranged.
Preferably, the system further comprises a sliding plate type support, the sliding plate type support is arranged inside the non-seismic isolation structure, and the seismic isolation structure is supported on the sliding plate type support.
Preferably, the sliding plate type support comprises a flange plate, a rubber layer, a polytetrafluoroethylene plate and a mirror surface stainless steel plate which are connected in sequence,
the flange plate is connected with the bottom of the shock insulation structure, and the mirror surface stainless steel plate is connected with the bottom of the non-shock insulation structure.
Preferably, the coefficient of friction between the polytetrafluoroethylene plate and the specular stainless steel plate is 0.03 or less.
Preferably, the bottom of the shock insulation structure is provided with an upper pier, the flange plate is connected with the upper pier,
the bottom of non-isolation structure is equipped with down the buttress, the slide plate support still includes pre-buried steel sheet, pre-buried steel sheet is buried underground inside the lower buttress, and with mirror surface corrosion resistant plate links to each other.
Preferably, a first anchoring steel bar is embedded in the upper pier, and the first anchoring steel bar is connected with the flange plate;
and a second anchoring steel bar is embedded in the lower pier and is connected with the embedded steel plate.
The shock insulation device is arranged between the side walls of the shock insulation ditch, and can meet the working deformation and rigidity of the building shock insulation requirement. Particularly, the horizontal shock insulation device realizes horizontal shock insulation by utilizing the axial stiffness of the spring, can prevent larger horizontal swing, and can thoroughly avoid the horizontal swing effect of the shock insulation structure because the stiffness, the quantity and the installation height of the shock insulation device can be adjusted, and the horizontal rigid center height of the shock insulation system can be equal to the height of the center of mass of the shock insulation structure. Meanwhile, the working deformation, the rigidity and the damping coefficient of the shock isolation device can be realized by selecting springs and viscous dampers with different specifications, and a plurality of shock isolation devices can be combined for use so as to be suitable for shock isolation structures with different earthquake levels, so that the application range is wide.
The seismic isolation device is particularly suitable for internal structures with higher seismic level and larger aspect ratio, can effectively avoid horizontal swing effect, and has simple structure and easy realization.
In the shock insulation system, the vertical load of the shock insulation structure is borne by the sliding plate type support, and the sliding plate type support has high vertical rigidity and small horizontal friction coefficient, so that the interference of the vertical displacement of the shock insulation structure on the shock insulation device is avoided, and the horizontal rigid center of the shock insulation system can be always coincided with the mass center of the shock insulation structure in the height direction.
Drawings
FIG. 1 is a front view of the structure of a seismic isolation device in embodiment 1 of the present invention;
FIG. 2 is a side view of the vibration damping device in example 1 of the present invention;
FIG. 3 is a top view of a plurality of seismic isolation devices arranged in a non-seismic isolation structure according to embodiment 1 of the present invention;
FIG. 4 is a schematic structural diagram of a seismic isolation system according to embodiment 2 of the present invention;
fig. 5 is a schematic structural view of a slide plate type support in embodiment 2 of the present invention.
In the figure: 1-a top plate; 2-a bottom plate; 3-a spring; 4-viscous damper; 5, guiding a sleeve rod; 6-anchoring screw; 7-a gimbal mount; 8-a guide hole; 9-shock insulation groove; 10-seismic isolation structure; 11-non-seismic isolation structures; 12-seismic isolation devices; 13-a slide plate type support; 14-a foundation; 15-flange plate; 16-a rubber layer; 17-a polytetrafluoroethylene plate; 18-mirror stainless steel plate; 19-pre-burying a steel plate; 20-upper buttress; 21-lower buttress; 22-a second anchoring bar; 23-first anchoring bar.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The invention provides a shock isolation device which is arranged between two side walls for horizontal shock isolation and comprises a top plate, a bottom plate, a spring and a viscous damper,
the top plate is connected with one side wall of the two side walls, the bottom plate is connected with the other side wall,
the viscous damper is arranged between the top plate and the bottom plate, two ends of the viscous damper are respectively propped against the top plate and the bottom plate,
the quantity of spring is many for parallel arrangement, and many spring evenly distributed are in viscous damper's outside, the both ends of every spring respectively with the roof with the bottom plate offsets.
Correspondingly, the invention also provides a shock insulation system which comprises a shock insulation structure and the shock insulation device, wherein the shock insulation structure is arranged in the non-shock insulation structure, a gap between the shock insulation structure and the non-shock insulation structure forms a shock insulation groove, and the shock insulation device is arranged in the shock insulation groove.
Example 1:
as shown in fig. 1 and 2, the present embodiment discloses a seismic isolation apparatus disposed between two side walls for horizontal seismic isolation, which includes a top plate 1, a bottom plate 2, a spring 3, and a viscous damper 4. In this embodiment, the seismic isolation device is disposed in a seismic isolation trench 9, and the seismic isolation trench 9 is a gap between a seismic isolation structure 10 and a non-seismic isolation structure 11.
Wherein, the top plate 1 is connected with the side wall of the non-seismic isolation structure 11, and the bottom plate 2 is connected with the side wall of the seismic isolation structure 10. The top plate 1 and the bottom plate 2 are used for receiving a spring 3 and a viscous damper 4.
The viscous damper 4 is used for providing damping and is arranged between the top plate 1 and the bottom plate 2, and two ends of the viscous damper 4 are respectively abutted against the top plate 1 and the bottom plate 2. The springs 3 are used for providing axial stiffness, the number of the springs 3 is multiple, the springs 3 are arranged in parallel, the springs 3 are arranged around the viscous damper 4, and two ends of each spring 3 are respectively abutted to the top plate 1 and the bottom plate 2. In the present embodiment, the plurality of springs 3 are uniformly distributed outside the viscous damper 4.
In this embodiment, the top plate 1 and the bottom plate 2 have the same size and shape and are disposed opposite to each other, and both ends of the viscous damper 4 are connected to the center positions of the top plate 1 and the bottom plate 2, respectively. The number of the springs 3 is 8.
To ensure the stability of the spring when it is under compression, the device also comprises a guide sleeve rod 5. The guide sleeve rod 5 is arranged between the top plate 1 and the bottom plate 2 in a penetrating mode through a guide hole 8 in the top plate 1, and the guide hole 8 facilitates movement of the guide sleeve rod 5. In this embodiment, the number of the guide sleeve rods 5 is the same as that of the springs 3, the single spring 3 is sleeved on the single guide sleeve rod 5, namely, the guide sleeve rod 5 is arranged inside the spring, and a small gap can be reserved between the spring 3 and the guide sleeve rod 5 to ensure the relative movement of the spring 3 and the guide sleeve rod 5.
It should be noted that the arrangement form, number, specification, and the like of the spring 3 and the viscous damper 4 can be flexibly combined according to the actual engineering requirements, and are not limited to the above-mentioned form mentioned in the present embodiment.
In this embodiment, the top plate 1 is connected to the side wall of the non-seismic isolation structure 11 through an anchor screw 6, and the bottom plate 2 is connected to the side wall of the seismic isolation structure 10 through an anchor screw 6.
In this embodiment, the seismic isolation apparatus further includes two gimbal assemblies, one of which is disposed between the top plate 1 and one anchor screw 6, and the other of which is disposed between the bottom plate 2 and the other anchor screw 6.
The universal joint assembly comprises a universal joint support 7, one side of the universal joint support 7 is fixed on the side wall of the shock insulation structure 10 through an anchoring screw 6, the other side of the universal joint support 7 is welded on the top plate 1 (or the bottom plate 2), and the universal joint support 7 can flexibly adapt to relative dislocation displacement between the non-shock insulation structure 11 and the shock insulation structure 10.
The shock isolation device in the embodiment can effectively avoid the horizontal swinging effect, and is particularly suitable for internal structures with higher earthquake level and larger height-to-width ratio.
Example 2:
as shown in fig. 3 and 4, the present embodiment discloses a seismic isolation system, which includes a seismic isolation structure, and the seismic isolation device 12 in embodiment 1. Wherein, the seismic isolation structure 10 is arranged inside the non-seismic isolation structure 11, a gap between the seismic isolation structure 10 and the non-seismic isolation structure 11 forms a seismic isolation groove 9, and the seismic isolation device 12 is arranged in the seismic isolation groove 9.
The vibration isolation devices 12 can be a plurality of vibration isolation devices 12, and the plurality of vibration isolation devices 12 are symmetrically arranged in two vibration isolation grooves 9 which are oppositely arranged. In this embodiment, a plurality of seismic isolation devices 12 are symmetrically arranged in four seismic isolation trenches which are arranged opposite to each other in pairs of the seismic isolation trenches 9.
In this embodiment, the seismic isolation system further includes a sliding plate type support 13, the sliding plate type support 13 is disposed inside the non-seismic isolation structure 11, and the seismic isolation structure 10 is supported on the sliding plate type support 13.
As shown in fig. 5, the slide plate type mount 13 includes a flange plate 15, a rubber layer 16, a teflon plate 17, and a mirror-finished stainless steel plate 18, which are connected in this order. The flange plate 15 is used for connecting the rubber layer 16 and the seismic isolation structure 10; the rubber layer 16 is used as a base layer of the polytetrafluoroethylene plate 17 and is used for buffering and balancing the uneven stress of the polytetrafluoroethylene plate 17; the specular stainless steel plate 18 serves as a friction surface of the teflon plate 17, and serves to support the entire superstructure while keeping the horizontal direction slidable.
Among them, the rubber layer 16 may be formed in a plurality of layers. The flange plate 15 is connected to the bottom of the seismic isolation structure 10, and the mirror surface stainless steel plate 18 is connected to the bottom of the non-seismic isolation structure 11.
In the embodiment, the bottom of the seismic isolation structure is provided with an upper support 20, and the upper support pier 20 is made of reinforced concrete materials and used for embedding anchor bars; the flange plate 15 is connected with the upper pier 20; the bottom of the non-seismic isolation structure is provided with a lower buttress 21, the sliding plate type support further comprises an embedded steel plate 19, and the embedded steel plate 19 is embedded inside the lower buttress 21 and connected with the mirror surface stainless steel plate 18.
Wherein, a first anchoring reinforcing steel bar 23 is embedded in the upper pier 20, and the first anchoring reinforcing steel bar 23 is connected with the flange plate 15; and a second anchoring steel bar 22 is embedded in the lower buttress 21, and the second anchoring steel bar 22 is connected with the embedded steel plate 19.
Since the horizontal relative displacement of the seismic isolation structure 10 occurs between the teflon plate 17 and the mirror-finished stainless steel plate 18, the friction coefficient between the two is ensured to be less than or equal to 0.03.
In the embodiment, the sliding plate type support 13 is arranged at the bottom of the seismic isolation structure and is used for bearing the vertical load of the seismic isolation structure; the vibration isolation devices 12 are arranged in each vibration isolation groove, and horizontal vibration isolation is realized by using the axial stiffness of the springs 3. The seismic isolation system is particularly suitable for seismic isolation structures with the height-to-width ratio b/a larger than 1.5. In order to ensure that the horizontal rigid center height of the seismic isolation system can be equal to the centroid height of the seismic isolation structure, the height c of the side wall of the seismic isolation groove on one side of the non-seismic isolation structure is set to be not less than 2/3 of the height d of the side wall of the seismic isolation groove on one side of the seismic isolation structure. The width e of the seismic isolation groove is determined by combining the size of the selected seismic isolation device 12 and the maximum horizontal relative displacement of the seismic isolation structure.
It should be noted that the arrangement, number, specification, and the like of the seismic isolation devices 12 and the sliding plate type support 13 may be determined according to actual engineering requirements.
Comprehensively, the seismic isolation system can prevent the seismic isolation structure from generating an overlarge horizontal oscillation effect and avoid the damage of the seismic isolation support.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011331604.6A CN112627375A (en) | 2020-11-24 | 2020-11-24 | Shock isolation device and shock isolation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011331604.6A CN112627375A (en) | 2020-11-24 | 2020-11-24 | Shock isolation device and shock isolation system |
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| CN112627375A true CN112627375A (en) | 2021-04-09 |
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| CN202011331604.6A Pending CN112627375A (en) | 2020-11-24 | 2020-11-24 | Shock isolation device and shock isolation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404810A (en) * | 2021-06-30 | 2021-09-17 | 湖北航天技术研究院总体设计所 | Passive vibration isolation system for shipborne optical platform and design method thereof |
| CN114856059A (en) * | 2022-03-01 | 2022-08-05 | 国网北京市电力公司 | Seismic Isolation Floor Systems for Electrical Equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168459A (en) * | 2011-04-29 | 2011-08-31 | 哈尔滨工业大学 | Magnetorheological vibration isolating device based on piezoelectric energy self collection |
| CN208668659U (en) * | 2018-04-18 | 2019-03-29 | 北京建筑大学 | Seismic isolation layer horizontal limit device and building with the same |
| CN209538440U (en) * | 2018-12-17 | 2019-10-25 | 广东工业大学 | A kind of novel TMD vibration control system suitable for tuning broadband excitation |
| CN110700432A (en) * | 2019-09-26 | 2020-01-17 | 北京城建集团有限责任公司 | Shock insulation layer structure |
| CN110847409A (en) * | 2019-12-10 | 2020-02-28 | 武汉理工大学 | A three-dimensional vibration isolation structure of a subway superstructure |
-
2020
- 2020-11-24 CN CN202011331604.6A patent/CN112627375A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168459A (en) * | 2011-04-29 | 2011-08-31 | 哈尔滨工业大学 | Magnetorheological vibration isolating device based on piezoelectric energy self collection |
| CN208668659U (en) * | 2018-04-18 | 2019-03-29 | 北京建筑大学 | Seismic isolation layer horizontal limit device and building with the same |
| CN209538440U (en) * | 2018-12-17 | 2019-10-25 | 广东工业大学 | A kind of novel TMD vibration control system suitable for tuning broadband excitation |
| CN110700432A (en) * | 2019-09-26 | 2020-01-17 | 北京城建集团有限责任公司 | Shock insulation layer structure |
| CN110847409A (en) * | 2019-12-10 | 2020-02-28 | 武汉理工大学 | A three-dimensional vibration isolation structure of a subway superstructure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404810A (en) * | 2021-06-30 | 2021-09-17 | 湖北航天技术研究院总体设计所 | Passive vibration isolation system for shipborne optical platform and design method thereof |
| CN114856059A (en) * | 2022-03-01 | 2022-08-05 | 国网北京市电力公司 | Seismic Isolation Floor Systems for Electrical Equipment |
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