CN110374012A - A kind of prefabricated engineering method of T beam original position Support Method - Google Patents
A kind of prefabricated engineering method of T beam original position Support Method Download PDFInfo
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- CN110374012A CN110374012A CN201910670125.8A CN201910670125A CN110374012A CN 110374012 A CN110374012 A CN 110374012A CN 201910670125 A CN201910670125 A CN 201910670125A CN 110374012 A CN110374012 A CN 110374012A
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- 238000012407 engineering method Methods 0.000 title claims abstract description 15
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- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 16
- 210000003205 muscle Anatomy 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 230000036541 health Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000007306 turnover Effects 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 23
- 239000002023 wood Substances 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
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- 238000013461 design Methods 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 210000003101 oviduct Anatomy 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 210000000003 hoof Anatomy 0.000 claims description 4
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- 239000002002 slurry Substances 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
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- 238000005336 cracking Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
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- 229910052742 iron Inorganic materials 0.000 claims description 3
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- 239000002184 metal Substances 0.000 claims description 3
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- 239000004033 plastic Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 210000002435 tendon Anatomy 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The present invention provides a kind of T beam original position Support Method prefabricated engineering method, comprising the following steps: step (1) measurement prepares turnover material；Step (2) completes steel column foundation construction, sets up rack platform；Step (3) completes pre-pressing bracket monitoring, and T beam beam making bench, erection support is arranged；Step (4) is arranged mould and binds web muscle；Step (5) installs longitudinal prestressing pipeline；Step (6) installs edge of a wing plate bracing frame and installs flange plate；Step (7) concrete placings, health, etc. strong, demoulding, step (8) mud jacking, sealing off and covering anchorage, anchorage bearing, last support system remove.The present invention is prefabricated compared to beam field, transport, Bridge Erector is set up, and avoids topple risk of the T beam length apart from Over-size transport, reduces the use and process management of the large scale equipments such as gantry crane, Bridge Erector, do not limited by adjacent holes across transport channel.The engineering method can be completed to construct using conventional loop wheel machine, transporting equipment and concrete supply equipment.
Description
Technical field
The present invention relates to Construction Technology fields, the specially a kind of prefabricated engineering method of T beam original position Support Method.
Background technique
It is conventional to use science of bridge building of the T-type beam as superstructure with the promotion of municipal bridge Construction Technology, pre-
Beam making field carries out concentration pre-casting, is transported to construction site using beam car, then set up with Bridge Erector.Near construction site
Do not have the engineering project of beam field location condition, needs to carry out the siteselecting planning of Liang Chang in place farther out, T beam need to pass through city road
The transport that road carries out the tens inner above long ranges gets to construction site, larger for some T beam spans, but negligible amounts
Engineering, using traditional construction method there are beam fabricating yard construction booth disappear costly, T beam transportation security risk it is big, compared with large-tonnage frame
It is many unfavorable that the large scale equipments such as bridge machine disengaging field cost is big, Liang Chang construction and generation of reclaiming increase pressure of environment etc..
Summary of the invention
Technical problem solved by the invention is to provide a kind of T beam original position Support Method prefabricated engineering method, to solve above-mentioned back
The problem of being proposed in scape technology.
Technical problem solved by the invention is realized using following technical scheme: a kind of prefabricated work of T beam original position Support Method
Method, comprising the following steps:
Step (1) measurement prepares turnover material；
Step (2) completes steel column foundation construction, sets up rack platform；
Step (3) completes pre-pressing bracket monitoring, and T beam beam making bench, erection support is arranged；
Step (4) is arranged mould and binds web muscle, makes reinforcing bar and checks reinforcing；
Step (5) installs longitudinal prestressing pipeline, installs T beam side and checks reinforcing；Prestress pipe uses metal wave
Line pipe, pipeline location are fixed with spacer bar, and spacer bar is securely welded on framework of steel reinforcement, such as pipeline location and skeleton reinforcing steel bar
It when conflict, should ensure that pipeline location is constant, only reinforcing bar slightly moved.Anchor plate and oviduct location dimension are accurately secured,
The center line of oviduct will be with anchor plate exact vertical, and the linking of oviduct and bellows must be smooth, must not spillage；Side form uses
Bamboo slab rubber, the cross rib 10mm*10mm lumps of wood, spacing 30cm, erecting rib is that double steel pipe and dovetail clip are reinforced with pull rod cooperation；
Step (6) installs edge of a wing plate bracing frame and installs edge of a wing template die, installs roof steel bar, pours T beam concrete production concrete
Test specimen；Horizontal slice pours from one end to the other side when pouring, every layer of concrete thickness 30cm~50cm in casting process, and in lower layer
Upper layer concreting is completed before concrete initial set；1st T beam can pour second T beam after just opening, when concrete strength reaches
T web and flange plate template are removed when to 27.5MPa；
Step (7) concrete placings, health, etc. strong, demoulding, the stage of completion answer tensioning in advance, complete two-stage prestressing force
It draws；Prestressed stretch-draw carries out tensioning stage by stage, and initial tensioning beam body concrete strength can when reaching 55% of design strength or more
It carries out；
Step (8) mud jacking, sealing off and covering anchorage, anchorage bearing after the completion of prestressing tendon tensioning, carry out hole path pressure grouting within 48 hours,
Mud jacking is carried out using Intelligent mud jacking machine, grouting material uses Special end product grouting material.It is in the milk simultaneously to support preformed hole, finally
Support system is removed.
Rack platform basic foundation bearing capacity is set up in the step (2), and foundation bearing capacity is detected using gravity cone penetrometer,
Support system setting structure is beam-column type bracket.
Pre-pressing bracket monitoring precompressed uses steel beam soldering bracket in the step (3), needs weight using reinforcing bar configuration
Precompressed is carried out, to ensure that precompressed stress surface is almost the same with T beam stress face, technical staff requires measurement bracket each point according to the rules
Position deformation data；It is that T beam beam making bench is arranged using lumps of wood bamboo slab rubber that T beam beam making bench, which is arranged, and lateral lumps of wood spacing is 1.2m,
Sectional dimension is 6cm × 8cm, longitudinally sets 3 row's lumps of wood and averagely arranges, sectional dimension is 10cm × 10cm, and pedestal two sides nail sets bamboo
Offset plate, vertically and horizontally fills river sand between the lumps of wood, pedestal top surface is laid with bamboo slab rubber.
Mould binding web muscle bar straightener, A.C. welder, bar cropper and reinforcing bar in the step (4)
The mechanical equipments such as bending machine carry out the processing of reinforcing bar semi-finished product, and steel bar meter requires to process in strict accordance with job specfication, process
Technical staff's check-up processing quality, does over again to underproof semi-finished product or calcellation is handled.
In the step (5) before longitudinal prestressing Pipe installing, it is necessary to the binding essence of close inspection prestressing force spacer bar
Degree, straight line localization muscle spacing are 100cm, and curved portion spacing is 50cm.The deviation of bellows in any direction is away from span centre
It is not greater than 4mm in 4m scope, remaining position is not greater than 6mm；When installation, it is necessary to be tied up bellows and Bracket for steel bar with iron wire
Together, to prevent bellows when pour concrete floats and causes serious quality accident.It should be as far as possible during bellows installation is in place
Alternating bending is avoided, to prevent tube wall cracking, meanwhile, should also be prevented from electric welding spark burn tube wall should check wave after bellows installation
Whether line pipe position meets design requirement.Bellows deformation, local damage penetrate plastic inner lining pipe into slurry in time in order to prevent,
It is close using adhesive tape wrapping between bellows and anchor plate.
Supporting support is first set up in the step (6) before the installation of flange plate template, the support of side bar ala lateralis listrium is using double
Arrange column, longitudinal pitch 1.2m.2 longitudinal horizontal rods are arranged in longitudinal every row, laterally setting twice horizontal brace rod, upright bar,
Horizon bar is attached securely using fastener, and flange plate supports adjacent flange plate, bracket using two rows of upright bar systems jointly between beam
Setting system is the same as side bar flange plate.Flange plate absolute altitude is adjusted using the lateral lumps of wood.
The web width of T-type beam is 20cm~40cm in the step (6), below horseshoe width be 62cm~82cm, when formwork erection
Hole of vibrating is reserved on " shape of a hoof " side inclined-plane, longitudinal pitch 1.5m is longitudinally successively vibrated using vibrating head along beam one by one.
Compared with prior art, the beneficial effects of the present invention are: the present invention is prefabricated compared to beam field, transport, Bridge Erector is set up,
Topple risk of the T beam length apart from Over-size transport is avoided, use and the process pipe of the large scale equipments such as gantry crane, Bridge Erector are reduced
Reason, is not limited by adjacent holes across transport channel.The engineering method uses conventional loop wheel machine, transporting equipment and concrete supply equipment can be with
Complete construction.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
In order to make implement technical means of the invention, creation characteristic, reach purpose and effect is easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained, in the description of the present invention, it should be noted that unless otherwise specific regulation
And restriction, term " installation ", " company ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable
Connection, or be integrally connected and can be mechanical connection, it is also possible to be electrically connected；It can be directly connected, centre can also be passed through
Medium is indirectly connected, can connection inside two elements.
As shown in Figure 1, a kind of prefabricated engineering method of T beam original position Support Method, comprising the following steps:
Step (1) measurement prepares turnover material；
Step (2) completes steel column foundation construction, sets up rack platform；
Step (3) completes pre-pressing bracket monitoring, and T beam beam making bench, erection support is arranged；
Step (4) is arranged mould and binds web muscle, makes reinforcing bar and checks reinforcing；
Step (5) installs longitudinal prestressing pipeline, installs T beam side and checks reinforcing；Prestress pipe uses metal wave
Line pipe, pipeline location are fixed with spacer bar, and spacer bar is securely welded on framework of steel reinforcement, such as pipeline location and skeleton reinforcing steel bar
It when conflict, should ensure that pipeline location is constant, only reinforcing bar slightly moved.Anchor plate and oviduct location dimension are accurately secured,
The center line of oviduct will be with anchor plate exact vertical, and the linking of oviduct and bellows must be smooth, must not spillage；Side form uses
Bamboo slab rubber, the cross rib 10mm*10mm lumps of wood, spacing 30cm, erecting rib is that double steel pipe and dovetail clip are reinforced with pull rod cooperation；
Step (6) installs edge of a wing plate bracing frame and installs flange plate, installs roof steel bar, pours the production concrete examination of T beam concrete
Part；Horizontal slice pours from one end to the other side when pouring, every layer of concrete thickness 30cm~50cm in casting process, and mixed in lower layer
Upper layer concreting is completed before solidifying soil initial set；1st T beam can pour second T beam after just opening, when concrete strength reaches
T web and flange plate template are removed when 27.5MPa；
Step (7) concrete placings, health, etc. strong, demoulding, the stage of completion answer tensioning in advance, complete two-stage prestressing force
It draws；Prestressed stretch-draw carries out tensioning stage by stage, and initial tensioning beam body concrete strength can when reaching 55% of design strength or more
It carries out；
Step (8) mud jacking, sealing off and covering anchorage, anchorage bearing after the completion of prestressing tendon tensioning, carry out hole path pressure grouting within 48 hours,
Mud jacking is carried out using Intelligent mud jacking machine, grouting material uses Special end product grouting material.It is in the milk simultaneously to support preformed hole, finally
Support system is removed.
Rack platform basic foundation bearing capacity is set up in the step (2), and foundation bearing capacity is detected using gravity cone penetrometer,
Support system setting structure is beam-column type bracket.
Pre-pressing bracket monitoring precompressed uses steel beam soldering bracket in the step (3), needs weight using reinforcing bar configuration
Precompressed is carried out, to ensure that precompressed stress surface is almost the same with T beam stress face, technical staff requires measurement bracket each point according to the rules
Position deformation data；It is that T beam beam making bench is arranged using lumps of wood bamboo slab rubber that T beam beam making bench, which is arranged, and lateral lumps of wood spacing is 1.2m,
Sectional dimension is 6cm × 8cm, longitudinally sets 3 row's lumps of wood and averagely arranges, sectional dimension is 10cm × 10cm, and pedestal two sides nail sets bamboo
Offset plate, vertically and horizontally fills river sand between the lumps of wood, pedestal top surface is laid with bamboo slab rubber.
Mould binding web muscle bar straightener, A.C. welder, bar cropper and reinforcing bar in the step (4)
The mechanical equipments such as bending machine carry out the processing of reinforcing bar semi-finished product, and steel bar meter requires to process in strict accordance with job specfication, process
Technical staff's check-up processing quality, does over again to underproof semi-finished product or calcellation is handled.
In the step (5) before longitudinal prestressing Pipe installing, it is necessary to the binding essence of close inspection prestressing force spacer bar
Degree, straight line localization muscle spacing are 100cm, and curved portion spacing is 50cm.The deviation of bellows in any direction is away from span centre
It is not greater than 4mm in 4m scope, remaining position is not greater than 6mm；When installation, it is necessary to be tied up bellows and Bracket for steel bar with iron wire
Together, to prevent bellows when pour concrete floats and causes serious quality accident.It should be as far as possible during bellows installation is in place
Alternating bending is avoided, to prevent tube wall cracking, meanwhile, should also be prevented from electric welding spark burn tube wall should check wave after bellows installation
Whether line pipe position meets design requirement.Bellows deformation, local damage penetrate plastic inner lining pipe into slurry in time in order to prevent,
It is close using adhesive tape wrapping between bellows and anchor plate.
Supporting support is first set up in the step (6) before the installation of flange plate template, the support of side bar ala lateralis listrium is using double
Arrange column, longitudinal pitch 1.2m.2 longitudinal horizontal rods are arranged in longitudinal every row, laterally setting twice horizontal brace rod, upright bar,
Horizon bar is attached securely using fastener, and flange plate supports adjacent flange plate, bracket using two rows of upright bar systems jointly between beam
Setting system is the same as side bar flange plate.Flange plate absolute altitude is adjusted using the lateral lumps of wood.
The web width of T-type beam is 20cm~40cm in the step (6), below horseshoe width be 62cm~82cm, when formwork erection
Hole of vibrating is reserved on " shape of a hoof " side inclined-plane, longitudinal pitch 1.5m is longitudinally successively vibrated using vibrating head along beam one by one.
Total station instrument coordinate method accurate settingout is used according to arrangement and method for construction and design coordinate before construction, determines steel pipe post position
It sets, pile position deviation controls within 2cm.Original basis is calculated using gravity cone penetrometer detection data before determining steel pipe post basis
Foundation structure, it is ensured that basis meets ground requirement for bearing capacity.
Interim pedestal production requirement: interim pedestal top mark coca is according to preloading value, arch value and second phase perseverance after T beam end
Deflection value is carried to account for.Beam body arch value is no more than 10mm after ensuring secondary dead load implementation.
To ensure that prestress pipe is unimpeded, internal lining pipe is penetrated in time before T beam concreting, internal lining pipe is that diameter is
The PE of 73mm is managed.Splice should be avoided to be arranged at maximum stress, and so that connector is staggered as far as possible, and connector is staggered distance
No less than 30d, and it is not less than 500mm, it is arranged in the tension reinforcement connector of same section, sectional area must not exceed reinforcing bar and cut
The 50% of area is not limited in compressive region.Same reinforcing bar, two connectors distance are not less than 1.3 times of laps of splice, bind connector and steel
Muscle is bent up the distance between a little not less than 10d, and connector must not be located at maximum pull section.
Thick, fine aggregate, cement, water and additive used in beam body concrete should meet demand of technical standard, and strict control is matched
Composition and division in a proportion, to ensure concrete quality.T beam concrete is formed using horizontal slice, integral concreting., on T beam " shape of a hoof " inclined-plane using more
Hole is vibrated technology, and is equipped with 30 small-sized vibrating spears and is vibrated to the intensive place of reinforcing bar.Reinforce concrete curing, after concrete placings initial set
It is conserved, after the completion of concreting, is covered with plastic film and geotextiles after slurry, solidification are received in surface immediately,
And timing sprinkling maintenance in template and geotextiles.Curing time is 14 days.
In beam body built-in fitting must securely, position it is accurate, must not leak and bury.Special messenger is set when concrete construction to carry out built-in fitting
It checks, it is ensured that built-in fitting position is accurate, indeformable.Tensioning equipment, jack and oil meter should all be within the verification phases, and stretching machine has
Good service performance.Tensioning is using stretching force and steel strand wires elongation " dual control ", based on stretching force.T beam support installs
It prevents T girder tensioning from support displacement being caused to damage temporarily without grouting at rear, after the completion of beam body is opened eventually, support can be carried out
Preformed hole grouting.
T beam crack in order to prevent, T beam uses gradation method for stretching, after the tensioning for the first time of T beam being drawn in this way, adjacent T
Beam can be poured as early as possible.The non-tensioning of T beam is avoided again and causes to perturb generation crack.
The present invention sets up Liang Pingtai processed using steel column, I-steel, Bailey beam.Lumps of wood bamboo slab rubber is used on Liangping platform processed
Deng setting beam making bench.Pre-pressing bracket flexible deformation value is analyzed by monitoring, is superimposed with tensioning springing quantum, synthetic setting Liang Tai
Throwing high level.It is no more than design requirement numerical value to meet beam body arch value after secondary dead load application.It is checked by design analysis,
The whole tensioning requirement that once reaches of T beam is adjusted to tensioning twice, by first time tensioning to overcome on the upside of bracket position T beam to pour pair
Not prestressed beam body causes disturbing influence.It is opened up at a certain distance at T beam side chamfering and makes fenestra firm by ramming, made firm by ramming using plug-in type
Stick, solving horseshoe chamfering, there may be make leakiness defect problem firm by ramming.By reinforcing the support at simply supported beam both ends, after solving tensioning
The problem of beam body both ends support reaction increases.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.Claimed range of the invention by appended claims and
Its equivalent thereof.
Claims (7)
1. a kind of prefabricated engineering method of T beam original position Support Method, it is characterised in that: the following steps are included:
Step (1) measurement prepares turnover material；
Step (2) completes steel column foundation construction, sets up rack platform；
Step (3) completes pre-pressing bracket monitoring, and T beam beam making bench, erection support is arranged；
Step (4) is arranged mould and binds web muscle, makes reinforcing bar and checks reinforcing；
Step (5) installs longitudinal prestressing pipeline, installs T beam side and checks reinforcing；Prestress pipe uses wavy metal
Pipe, pipeline location are fixed with spacer bar, and spacer bar is securely welded on framework of steel reinforcement, as pipeline location and skeleton reinforcing steel bar support
It when touching, should ensure that pipeline location is constant, only reinforcing bar slightly moved, anchor plate and oviduct location dimension will accurately securely, loudspeaker
The center line of pipe will be with anchor plate exact vertical, and the linking of oviduct and bellows must be smooth, must not spillage；Side form uses bamboo
Offset plate, the cross rib 10mm*10mm lumps of wood, spacing 30cm, erecting rib is that double steel pipe and dovetail clip are reinforced with pull rod cooperation；
Step (6) installs edge of a wing plate bracing frame and installs flange plate, installs roof steel bar, pours T beam concrete production concrete sample；
Horizontal slice pours from one end to the other side when pouring, every layer of concrete thickness 30cm~50cm in casting process, and in lower layer's coagulation
Upper layer concreting is completed before native initial set；1st T beam can pour second T beam after just opening, when concrete strength reaches
T web and flange plate template are removed when 27.5MPa；
Step (7) concrete placings, health, etc. strong, demoulding, the stage of completion answer tensioning in advance, complete two-stage prestressed stretch-draw；In advance
Stress tension carries out tensioning stage by stage, can carry out when initial tensioning beam body concrete strength reaches 55% of design strength or more；
Step (8) mud jacking, sealing off and covering anchorage, anchorage bearing after the completion of prestressing tendon tensioning, carry out hole path pressure grouting within 48 hours, use
Intelligent mud jacking machine carries out mud jacking, and grouting material uses Special end product grouting material, while being in the milk to support preformed hole, finally supports
System is removed.
2. a kind of prefabricated engineering method of T beam original position Support Method according to claim 1, it is characterised in that: taken in the step (2)
If rack platform basic foundation bearing capacity detects foundation bearing capacity using gravity cone penetrometer, support system setting structure is post and beam
Bracket.
3. a kind of prefabricated engineering method of T beam original position Support Method according to claim 1, it is characterised in that: branch in the step (3)
Frame precompressed monitors precompressed and uses steel beam soldering bracket, needs weight to carry out precompressed using reinforcing bar configuration, to ensure precompressed stress
Face is almost the same with T beam stress face, and technical staff requires measurement each point deformation data of bracket according to the rules；T beam beam is set
Pedestal is that T beam beam making bench is arranged using lumps of wood bamboo slab rubber, and lateral lumps of wood spacing is 1.2m, and sectional dimension is 6cm × 8cm, is indulged
It is averagely arranged to 3 row's lumps of wood are set, sectional dimension is 10cm × 10cm, and pedestal two sides nail sets bamboo slab rubber, vertically and horizontally fills between the lumps of wood
River sand, pedestal top surface are laid with bamboo slab rubber.
4. a kind of prefabricated engineering method of T beam original position Support Method according to claim 1, it is characterised in that: tire in the step (4)
The mechanical equipments such as tool binding web muscle bar straightener, A.C. welder, bar cropper and angle-bender carry out steel
The processing of muscle semi-finished product, steel bar meter require to process in strict accordance with job specfication, and matter is processed in process technical staff's check-up
Amount, does over again to underproof semi-finished product or calcellation is handled.
5. a kind of prefabricated engineering method of T beam original position Support Method according to claim 1, it is characterised in that: indulged in the step (5)
To before prestress pipe installation, it is necessary to which the binding precision of close inspection prestressing force spacer bar, straight line localization muscle spacing are
100cm, curved portion spacing are 50cm；The deviation of bellows in any direction is not greater than 4mm in away from span centre 4m scope,
Remaining part position is not greater than 6mm；When installation, it is necessary to be held together bellows and Bracket for steel bar with iron wire, to prevent wave when pour concrete
Line pipe floats and causes serious quality accident；Alternating bending should be avoided as far as possible during bellows installation is in place, to prevent tube wall
Cracking, meanwhile, should also be prevented from electric welding spark burn tube wall should check whether bellows position meets design after bellows installation
It is required that bellows deformation, local damage penetrate plastic inner lining pipe in time, adopt between bellows and anchor plate into slurry in order to prevent
It is close with adhesive tape wrapping.
6. a kind of prefabricated engineering method of T beam original position Support Method according to claim 1, it is characterised in that: step (6) wing centre section
Supporting support is first set up before the installation of listrium template, the support of side bar ala lateralis listrium uses double column, and longitudinal pitch 1.2m is indulged
2 longitudinal horizontal rods are set to every row, twice horizontal brace rod is laterally set, upright bar, horizon bar are attached jail using fastener
Gu flange plate supports adjacent flange plate using two rows of upright bar systems jointly between beam, system is arranged with side bar flange plate, the edge of a wing in bracket
Plate absolute altitude is adjusted using the lateral lumps of wood.
7. a kind of prefabricated engineering method of T beam original position Support Method according to claim 1, it is characterised in that: T in the step (6)
The web width of type beam is 20cm~40cm, below horseshoe width be 62cm~82cm, it is pre- on " shape of a hoof " side inclined-plane when formwork erection
Vibration staying smashes hole, and longitudinal pitch 1.5m is longitudinally successively vibrated using vibrating head along beam one by one.
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