CN106012848B - A kind of pre-buried bracket construction method of cast-in-situ box girder and bridge - Google Patents
A kind of pre-buried bracket construction method of cast-in-situ box girder and bridge Download PDFInfo
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- CN106012848B CN106012848B CN201610404485.XA CN201610404485A CN106012848B CN 106012848 B CN106012848 B CN 106012848B CN 201610404485 A CN201610404485 A CN 201610404485A CN 106012848 B CN106012848 B CN 106012848B
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- 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
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- 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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A kind of pre-buried bracket construction method of cast-in-situ box girder, comprises the following steps：Bracket built-in fitting is embedded in the precalculated position of pier shaft in pier shaft reinforcement installation, bracket built-in fitting includes the first steel plate and is soldered to the bracket fixture of the first steel plate, and bracket fixture is soldered into pier shaft reinforcing bar；After pier shaft concrete form removal, expose the first steel plate；And support meanss are welded to the first steel plate to form bracket.A kind of bridge, it includes at least two brackets formed by the above method, and the first bracket restocking is provided with the first main beam, and the second bracket restocking is provided with the second main beam；First main beam and the second main beam restocking are provided with the Bailey beam as longeron；Transverse distribution beam is laid with Bailey beam, cast-in-situ box girder is provided with transverse distribution beam.Support meanss form one group of bracket with pre-buried bracket built-in fitting, then put unloading block, main beam, Bailey beam, distribution beam and the lumps of wood successively on bracket, by the erection templating of bridge, quick construction, facility.
Description
Technical field
The present invention relates to field of bridge construction, in particular to a kind of pre-buried bracket construction method of cast-in-situ box girder and
A kind of bridge.
Background technology
Box beam component on site construction method is mainly the selection to falsework, to reach quick, safety, economic dispatch target, is applied
Conscientious comparison must be carried out before work to mount approach.The conventional construction method of cast-in-situ box girder has：Raft support method, anchor ear shaped steel
Shellfish thunder sectional shelf-unit method and MSS method etc..According to the factors such as different construction environments, bridge feature, economic security, selection
Different construction methods.In the prior art, construction material time is grown, timbering material service cycle length, and construct by
The influence of topography.
The content of the invention
It is an object of the invention to provide a kind of pre-buried bracket construction method of cast-in-situ box girder, and it can be by the erection mould of bridge
Plate, improve efficiency of construction.
Another object of the present invention is to provide a kind of bridge built using the above method.
What embodiments of the invention were realized in：
A kind of pre-buried bracket construction method of cast-in-situ box girder, it comprises the following steps：It is in pier shaft reinforcement installation that bracket is pre-
Embedded part is embedded in the precalculated position of pier shaft, and bracket built-in fitting includes the first steel plate and is soldered to the bracket fixture of the first steel plate,
Bracket fixture is soldered to pier shaft reinforcing bar；After pier shaft concrete form removal, expose the first steel plate；And support meanss are welded to first
Steel plate is to form bracket.
In preferred embodiments of the present invention, the bracket fixture of the above-mentioned pre-buried bracket construction method of cast-in-situ box girder includes connecting
It is connected to a plurality of round steel of the first steel plate and is connected to the hook of each round steel.
In preferred embodiments of the present invention, the support meanss of the above-mentioned pre-buried bracket construction method of cast-in-situ box girder include connection
To the supporting steel plate and the junction steel plate of the first steel plate of connection and supporting steel plate of the first steel plate.
In preferred embodiments of the present invention, the above-mentioned pre-buried bracket construction method of cast-in-situ box girder also includes on supporting steel plate
Sandbox is placed, main beam is placed on sandbox.
In preferred embodiments of the present invention, the above-mentioned pre-buried bracket construction method of cast-in-situ box girder will also including the use of connector
Main beam links together with supporting steel plate.
In preferred embodiments of the present invention, the above-mentioned pre-buried bracket construction method of cast-in-situ box girder is additionally included in main beam restocking
It is provided as the Bailey beam for longeron.
In preferred embodiments of the present invention, the above-mentioned pre-buried bracket construction method of cast-in-situ box girder also includes the cloth in Bailey beam
If transverse distribution beam.
In preferred embodiments of the present invention, the above-mentioned pre-buried bracket construction method of cast-in-situ box girder is set up on transverse distribution beam
Cast-in-situ box girder, using support to cast-in-situ box girder precompressed, the rack elasticity deformation values measured according to precompressed adjust template to design
Position, then side form and wing mould are installed.
A kind of bridge, it includes at least two brackets formed by the above method, and bracket includes being attached to the first bridge pier
First bracket and the second bracket for being attached to the second bridge pier, the first bridge pier and the second bridge pier are spaced；First bracket restocking
Provided with the first main beam, the second bracket restocking is provided with the second main beam；First main beam and the second main beam restocking are provided with conduct
The Bailey beam of longeron, one end of Bailey beam are arranged on the first main beam, and the other end of Bailey beam is arranged on the second main beam；
Transverse distribution beam is laid with Bailey beam, cast-in-situ box girder is provided with transverse distribution beam.
In preferred embodiments of the present invention, above-mentioned bridge by transverse distribution beam and Bailey beam snapping, makes horizontal stroke using U-shaped button
An entirety is connected into distribution beam and Bailey beam；Four row's Bailey beams, cast-in-place case are laid with longitudinal median septum of cast-in-situ box girder
Three row's Bailey beams are laid with two coxostermums of beam respectively, lay two row's Bailey beams under the wing plate of cast-in-situ box girder respectively.
The beneficial effect of the embodiment of the present invention is：In the pre-buried bracket construction method of cast-in-situ box girder of the present invention, in pier shaft
The bracket built-in fitting processed is embedded in the precalculated position of pier shaft during reinforcement installation, bracket built-in fitting is soldered to pier shaft steel
Muscle, the position to form bracket can be accurately positioned, and make bracket in one plane；After pier shaft concrete form removal, support is filled
Put and be soldered to bracket built-in fitting, support meanss and pre-buried bracket built-in fitting form one group of complete bracket, then on bracket according to
It is secondary to put unloading block, main beam, Bailey beam, distribution beam and the lumps of wood, by the erection templating of bridge so that quick construction, facility,
Add economic benefit.In addition, the construction material time of this method is short, timbering material is few service cycle, and utilization rate is high, fits
It is tight for the construction period, the high project of quality requirement.Because this method uses modular frame equipment, method, it is limited by construction landform
Small, box beam weight passes to pier shaft through bracket, and the transmission of power is simply clear and definite, is settled in the absence of support and not by site contour
Influence, after the completion of support is set up, do not influence the traffic under current and bridge waterborne, save operating expenses, reduce construction costs.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the flow chart of the pre-buried bracket construction method of cast-in-situ box girder of the present invention；
Fig. 2 is the schematic perspective view of the bracket built-in fitting used in the pre-buried bracket construction method of cast-in-situ box girder of the present invention；
Fig. 3 is the schematic perspective view of the bracket used in the pre-buried bracket construction method of cast-in-situ box girder of the present invention；
Fig. 4 is the side schematic view of the bracket used in the pre-buried bracket construction method of cast-in-situ box girder of the present invention；
Fig. 5 is the front schematic view of the bracket used in the pre-buried bracket construction method of cast-in-situ box girder of the present invention；
Fig. 6 is the side schematic view of the bridge of the present invention；
Fig. 7 is the partial enlarged drawing at A in Fig. 6；
Fig. 8 is the front schematic view of the bridge of the present invention；
Fig. 9 is the partial enlarged drawing at B in Fig. 8.
In figure：
Bracket built-in fitting 210, the first steel plate 211, round steel 213, hook 214, bracket fixture 215, bracket 220, support
Device 221, supporting steel plate 222, junction steel plate 223, center line 224, the first bracket 225, the second bracket 226, bridge 300, main horizontal stroke
Beam 310, the first main beam 311, the second main beam 312, power transmission center line 313, sandbox 320, Bailey beam 330, transverse distribution beam
340, cast-in-situ box girder 350, the first bridge pier 410, the second bridge pier 420.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
First embodiment
Fig. 1 to Fig. 5 is refer to, the present embodiment provides a kind of pre-buried bracket construction method 100 of cast-in-situ box girder, and it includes following
Step：
In a step 101, surveying and locating.According to design and support elevation control, using total powerstation and steel ruler in pier
Body releases the pre-buried position of bracket built-in fitting 210.
In a step 102, it is in pier shaft reinforcement installation that the bracket built-in fitting 210 processed is accurate by bracket design attitude
It is embedded on pier shaft, bracket built-in fitting 210 is soldered to pier shaft reinforcing bar, in the present embodiment, two bracket built-in fittings 210 is divided
The pier shaft reinforcing bar of two bridge piers is not soldered to.It is thus possible to the installation site of bracket built-in fitting 210 is accurately determined in advance so that
Bracket built-in fitting 210 is exactly on a horizontal plane.
Bracket built-in fitting 210 includes the first steel plate 211 and is soldered to the bracket fixture 215 of the first steel plate 211, bracket
Fixture 215 includes being connected to a plurality of round steel 213 of the first steel plate 211 and is connected to the hook 214 of the round steel 213.
The angle of round steel 213 and the first steel plate 211 can be selected as needed, and in the present embodiment, round steel 213 hangs down
Directly in the first steel plate 211.Hook 214 is embedded in the connection dynamics that hook 214 and pier shaft are enhanced in pier shaft so that round steel 213 with
The connection of pier shaft is more firm.The radian of hook 214 can be selected as needed.Round steel 213 can be by being bonded, welding
The connected mode such as connect, rivet or be threadedly coupled and be connected to pier shaft reinforcing bar, in the present embodiment, round steel 213 or hook 214 weld
To pier shaft reinforcing bar.The optional position of round steel 213 can be soldered to pier shaft reinforcing bar.The quantity and diameter of round steel 213 can be according to institutes
The intensity needed is selected.In the present embodiment, bracket built-in fitting 210 includes 15 round steel 213, and the specification of hook 214 is Φ
32, the long 60cm of steel plate, wide 30cm and thick 2cm.Can will circle by the connected mode such as being bonded, welding, riveting or being threadedly coupled
Steel 213 is connected to the first steel plate 211.In the present embodiment, round steel 213 is soldered to the first steel plate 211.
In step 103, after the form removal of pier shaft concrete, knocking out the first steel plate 211 of bracket built-in fitting 210 makes the first steel plate 211
It is exposed at outside pier shaft, then support meanss 221 is soldered to the first steel plate 211, support meanss 221 is formed with bracket built-in fitting 210
One group of bracket 220.
Every group of bracket 220 includes bracket built-in fitting 210 and support meanss 221, and support meanss 221 include in the present embodiment
It is connected to the supporting steel plate 222 of the first steel plate 211 and the junction steel plate 223 of the first steel plate of connection 211 and supporting steel plate 222.
In the present embodiment, the vertical connection of supporting steel plate 222 is to the first steel plate 211, and the first steel plate 211 is referred to as vertical plate and supporting steel plate
222 are referred to as level board.In other embodiments, the angle of the first steel plate 211 and supporting steel plate 222 can be selected as needed
Select.One end of junction steel plate 223 is connected to the first steel plate 211 and the other end is connected to supporting steel plate 222, can be by viscous
The connected mode such as connect, weld, rivet or be threadedly coupled and junction steel plate 223 is respectively connecting to the first steel plate 211 and supporting steel plate
222, junction steel plate 223 plays a part of reinforcing so that the bonding strength of the first steel plate 211 and supporting steel plate 222 and support are strong
Du Genggao.Bracket 220 includes the first bracket 225 being arranged on a pier shaft and second N be arranged on another pier shaft
Leg 226, the first bracket 225 is identical with the structure of the second bracket 226, can make the first bracket 225 and the second bracket as needed
226 in one plane, is influenceed so as to avoid to build bridge by landform.
Bracket built-in fitting 210 is accurately welded by design attitude when installing pier shaft reinforcing bar and is embedded on pier shaft.Pier shaft concrete
After form removal, knock out exposed the first pre-buried steel plate 211 and the other steel plates processed are soldered to the first pre-buried steel plate one by one
211 one group of complete bracket of composition.Bracket built-in fitting 210 is embedded in pier shaft before pier shaft concrete form removal and is soldered to pier shaft
Reinforcing bar, the installation site of bracket 220 can be accurately determined in advance, supporting steel plate 222 is then connected to the first pre-buried steel again
Plate 211, junction steel plate 223 is then respectively connecting to the first steel plate 211 and supporting steel plate 222 so that bracket 220 is all at one
In plane, improve construction precision and simplify the installation procedure of bracket 220, improve efficiency of construction.
Fig. 6 and Fig. 8 are refer to, and with continued reference to Fig. 1 to Fig. 5, at step 104, in the supporting steel plate of bracket 220
Sandbox 320 is placed on 222, main beam 310 is placed on sandbox 320.In the present embodiment, in the first bracket 225 and second
Sandbox 320 is placed on bracket 226 respectively, the first main beam 311 is placed on the first bracket 225, the second main beam 312 is put
Put on the second bracket 226.
In the present embodiment, main beam 310 uses 2I56b I-steel, length 10.2m.310 times brackets of main beam 220
The off-load block of upper (i.e. bracket 220 pushes up) uses sandbox 320.Sandbox 320 is used for off-load purposes, and the operation principle of sandbox 320 is profit
Smaller compression performance and larger mobile performance with sand, make sandbox 320 play a part of jack, the bottom design of sandbox 320
There is leakage sand hole, allow fine sand to be flowed out from sand export, the height of the sand of the compacting to be prestored in sandbox 320 is equal to the whereabouts being pre-designed
Highly.
Main beam 310 is horizontal I-steel, and main beam 310 is installed using crane lifting.In the power transmission of main beam 310
Heart line 313 overlaps with the center line 224 of the first steel plate 211 of bracket 220, and main beam 310 need to place level, to prevent I-steel from going out
Existing horizontal sliding phenomenon, connector (not shown) is used by main beam 310 and ox in the top surface of the supporting steel plate 222 of bracket 220
The supporting steel plate 222 of leg welds together, so that main beam 310 is securely connected to the supporting steel plate 222 of bracket 220, at this
In embodiment, connector is small steel plate.
In step 105, Bailey beam 330 is set up on main beam 310, Bailey beam 330 is longitudinal girder, Bailey beam 330
One end be arranged on the first main beam 311 on and the other end be arranged on the second main beam 312 on.And Bailey beam 330 is by shellfish
Thunder piece is assembled, in the present embodiment, is combined into 5 groups by 20 in the Bailey beam 330 that the top surface of main beam 310 is set up and forms.
It should be understood that the quantity in the beret truss required for other embodiments, Bailey beam 330 can be selected as needed.First shift to an earlier date
Assembly is carried out, each two beret truss is linked to be generally one group with support frame, docked after re-segmenting lifting.
In the present embodiment, Bailey beam 330 lays form as the row of cloth four under longitudinal median septum, spacing 45cm, two coxostermums
Under each row of cloth three, spacing 45cm, each row of cloth two under wing plate, spacing 90cm.Shellfish thunder pin when Bailey beam connects must be urgent, each
Upper buckle, beret truss longitudinal direction 3m by the use of supporting support frame as lateral ties, unify beret truss, made up and down on pin
Often row's beret truss stress is more balanced, and support frame bolt must be tightened.
Every group of Bailey beam 330 should mark every group of position line on main beam 310 when installing, be arranged by spacing, right
The Bailey beam installed to prevent its displacement, with horizontal I-steel contact position in I-steel top surface weld by the Bailey beam in outermost both sides
Connect bar dowel (not shown), the I-steel welding vertical spacing reinforcing bar (not shown) of middle part, sets 2 at Bailey beam.Shellfish
There is space with I-steel contact surface after the splicing of thunder beam 330, using lower pading plate (not shown).The length edge longitudinal direction that metal mat is put is
The width of Two bors d's oeuveres I-steel, steel plate width should be not less than the width of every shellfish thunder chord member, should ensure that pad is closely knit during construction.Bei Lei
Beam 330 in lifting leaving certain space between concrete bridge pier to facilitate dismounting, support integral shift during to prevent precompressed, construction
Shi Caiyong channel-section steels are firm by the end of Bailey beam 330 and concrete big and heavy stone card.
In step 106, transverse distribution beam 340 is laid in Bailey beam 330.Mark between transverse distribution beam 340
Quasi- spacing uses 75cm, in box beam span centre partition wall and end transition part, using encryption spacing 60cm.Transverse distribution beam 340
After installing, using U-shaped button by transverse distribution beam 340 and the snapping of Bailey beam 330, make transverse distribution beam 340 and Bailey beam 330
Connect into an entirety, enhancing transverse distribution beam 340 and the stability of Bailey beam 330.
In step 107, using support to the precompressed of cast-in-situ box girder 350.In the present embodiment, cast-in-situ box girder 350 take by
The mode precompressed of hole multistage loadings, prefabricating load are 1.2 times of box beam weight, and load arrangement changes according to box section to be set.
Loading procedure is 0 → 50% → 80% → the 100% of prefabricating load, observes the deflection of strutting system in loading procedure step by step,
Take total settlement in static pressure observation 5 days, 5 days after fully loaded and should be less than 1.5cm, and the settling amount of the 5th day should be less than 1.5mm after can
Unloading, uninstall process is with loading on the contrary, order is 100% → 80% → 50% → 0, while is also required to measure the change of support step by step
Shape amount.Heap carrier material uses sand pocket precompressed.
To grasp deflection of the strutting system during simulation loading, it is necessary to certain observation station be set, in preloading
Each stage in journey will measure.Its medium-height trestle settlement observation staff uses the reinforcing bars of φ 10, and template is hung on thin wire upper end
Bottom is longitudinally on the small lumps of wood, allows its natural hanging, and lower end is cut flat with, liftoff about 20cm；Situation about being changed according to box section every 4~
6m sets a measuring frequency section, and an observation station is set under wing plates on two sides, two coxostermums and bottom plate per section.
A place is chosen in the range of 100 meters near support and buries settlement observation basic point.Basic point will aspire for stability, no
It is easily destroyed, sighting condition is good, and have obvious mark.Piling prepressing is carried out into rear, arrangement settlement observation data to data
Analysis, calculate each position rack elasticity deformation and inelastic deformation amount, the installation warrants as template camber.
In step 108, the rack elasticity deformation values gone out according to pre-compacted test adjust template to design attitude, Ran Houan
Fill side form and wing mould.Side form install after carry out bottom, web reinforcement colligation, after the completion of carry out internal model installation；Followed by top plate
Reinforcing bar colligation, after the completion of carry out hold mould installation.Template is made up of bamboo glue surface plate and the lumps of wood.Bamboo glue surface plate thickness of slab 15mm, directly spread
It is located on the bottom plate genesis analysis stress lumps of wood, bamboo slab rubber is fixed with the lumps of wood using iron nail.The lumps of wood is vertically arranged, size 10x10cm,
Using unified standard spacing 30cm.
Fig. 6 to Fig. 9 is refer to, the present invention also provides a kind of bridge 300, and bridge 300 includes the ox formed by the above method
Leg 220, bridge 300 also include be arranged on bracket 220 main beam 310, be arranged on main beam 310 Bailey beam 330, set
Put the transverse distribution beam 230 in Bailey beam 330 and the cast-in-situ box girder 350 being arranged on transverse distribution beam 340.
Bracket 220 includes the first bracket 225 and the second bracket 226, the first bracket 225 be attached to the first bridge pier 410 and
Formed by bracket built-in fitting 210, the second bracket 226 is attached to the second bridge pier 420 and formed by bracket built-in fitting 210, first
Bridge pier 410 and the second bridge pier 420 are spaced.Main beam 310 includes the first main beam 311 and the second main beam 312, first N
The restocking of leg 225 is provided with the first main beam 311, and the restocking of the second bracket 226 is provided with the second main beam 312.First main beam 311 and
The restocking of two main beam 312 is provided with the Bailey beam 330 as longeron, i.e. one end of Bailey beam 330 is arranged on the first main beam 311
And the other end is arranged on the second main beam 312.Transverse distribution beam 340 is laid with Bailey beam 330, on transverse distribution beam 340
It is provided with cast-in-situ box girder 350.
In the present embodiment, transverse distribution beam 340 and the snapping of Bailey beam 330 are made into transverse distribution beam 340 using U-shaped button
An entirety is connected into Bailey beam 330, four row's Bailey beams 330 are laid with longitudinal median septum of cast-in-situ box girder 350 to increase
Support strength under longitudinal median septum, three row's Bailey beams 330 are laid with respectively to increase abdomen under two coxostermums of cast-in-situ box girder 350
Support strength under plate, it is strong to increase the support under wing plate that two row's Bailey beams 330 are laid respectively under the wing plate of cast-in-situ box girder 350
Degree.
In summary, will processing in pier shaft reinforcement installation in the pre-buried bracket construction method of cast-in-situ box girder of the present invention
Good bracket built-in fitting is embedded in the precalculated position of pier shaft, and bracket built-in fitting is soldered into pier shaft reinforcing bar, can be accurately positioned shape
Into the position of bracket, and make bracket in one plane；After pier shaft concrete form removal, it is pre-buried that support meanss are soldered to bracket
Part, support meanss form one group of complete bracket with pre-buried bracket built-in fitting, then put unloading block, main horizontal stroke successively on bracket
Beam, Bailey beam, distribution beam and the lumps of wood, by the erection templating of bridge so that quick construction, facility, add economic benefit.This
Outside, the construction material time of this method is short, and timbering material is few service cycle, and utilization rate is high, matter tight suitable for the construction period
Amount requires high project.Because this method uses modular frame equipment, method, it is limited small by construction landform, and box beam weight is through bracket
Pier shaft is passed to, the transmission of power is simply clear and definite, settles and is not influenceed by site contour in the absence of support, has been set up in support
Cheng Hou, the traffic under current and bridge waterborne is not influenceed, saves operating expenses, reduces construction costs.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of pre-buried bracket construction method of cast-in-situ box girder, it is characterised in that the construction method comprises the following steps：
Bracket built-in fitting is embedded in the precalculated position of pier shaft in pier shaft reinforcement installation, the bracket built-in fitting includes the first steel
Plate and the bracket fixture for being soldered to first steel plate, the pier shaft reinforcing bar is soldered to by the bracket fixture；
The bracket fixture includes being connected to a plurality of round steel of first steel plate and is connected to the curved of each round steel
Hook, the round steel or the hook are soldered to the pier shaft reinforcing bar；
After pier shaft concrete form removal, expose first steel plate；And
Support meanss are welded to first steel plate to form bracket.
2. the pre-buried bracket construction method of cast-in-situ box girder according to claim 1, it is characterised in that the support meanss include
It is connected to the supporting steel plate of first steel plate and connects the junction steel plate of first steel plate and the supporting steel plate.
3. the pre-buried bracket construction method of cast-in-situ box girder according to claim 2, it is characterised in that be additionally included in the support
Sandbox is placed on steel plate, main beam is placed on the sandbox.
4. the pre-buried bracket construction method of cast-in-situ box girder according to claim 3, it is characterised in that also including the use of connector
The main beam and the supporting steel plate are linked together.
5. the pre-buried bracket construction method of cast-in-situ box girder according to claim 4, it is characterised in that be additionally included in the main horizontal stroke
Beam restocking is provided as the Bailey beam for longeron.
6. the pre-buried bracket construction method of cast-in-situ box girder according to claim 5, it is characterised in that be additionally included in the shellfish thunder
Transverse distribution beam is laid on beam.
7. the pre-buried bracket construction method of cast-in-situ box girder according to claim 6, it is characterised in that in the transverse distribution beam
Upper erection cast-in-situ box girder, using support to the cast-in-situ box girder precompressed, the rack elasticity deformation values measured according to the precompressed will
Template is adjusted to design attitude, then installs side form and wing mould.
A kind of 8. bridge, it is characterised in that the bridge include as the method described in claim 1 formed at least two described in
Bracket, the bracket include being attached to the first bracket of the first bridge pier and are attached to the second bracket of the second bridge pier, and described the
One bridge pier and second bridge pier are spaced；The first bracket restocking is provided with the first main beam, the second bracket restocking
Provided with the second main beam；First main beam and the second main beam restocking are provided with the Bailey beam as longeron, the shellfish
Lei Liang one end is arranged on first main beam, and the other end of the Bailey beam is arranged on second main beam；Institute
State and transverse distribution beam is laid with Bailey beam, cast-in-situ box girder is provided with the transverse distribution beam.
9. bridge according to claim 8, it is characterised in that using U-shaped button by the transverse distribution beam and the shellfish thunder
Beam snapping, the transverse distribution beam is set to connect into an entirety with the Bailey beam；Under longitudinal median septum of the cast-in-situ box girder
Bailey beam described in four rows is laid with, is laid with Bailey beam described in three rows under two coxostermums of the cast-in-situ box girder respectively, it is described existing
Pour and lay Bailey beam described in two rows under the wing plate of box beam respectively.
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| CN106930297B (en) * | 2017-04-25 | 2022-05-20 | 宁波市政工程建设集团股份有限公司 | Foundation pit steel support bracket pre-embedding device and construction method |
| CN108487073B (en) * | 2018-04-13 | 2019-07-12 | 中铁十九局集团第七工程有限公司 | A kind of construction method of sandbox basis one-piece casting Cast-in-situ Beam |
| CN110016871A (en) * | 2019-04-28 | 2019-07-16 | 中国铁建大桥工程局集团有限公司 | A kind of construction method suitable for over-height pier large span curve bridge |
| CN113756335A (en) * | 2021-09-24 | 2021-12-07 | 重庆建工第三建设有限责任公司 | Construction process for large-section frame column in slope area |
| CN114086473B (en) * | 2021-11-10 | 2023-06-27 | 中铁四局集团第五工程有限公司 | High pier cast-in-situ beam bracket and construction method thereof |
| CN114606869A (en) * | 2022-03-31 | 2022-06-10 | 中铁五局集团路桥工程有限责任公司 | Novel bracket structure and using method thereof |
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