CN110154230A - A kind of method for prefabricating and construction method of steel plate combination beam bridge panel - Google Patents
A kind of method for prefabricating and construction method of steel plate combination beam bridge panel Download PDFInfo
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- CN110154230A CN110154230A CN201910587109.2A CN201910587109A CN110154230A CN 110154230 A CN110154230 A CN 110154230A CN 201910587109 A CN201910587109 A CN 201910587109A CN 110154230 A CN110154230 A CN 110154230A
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- Prior art keywords
- floorings
- overall
- steel
- steel plate
- combination beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
This application involves the construction fields of steel plate combination beam bridge, more particularly to the method for prefabricating and construction method of a kind of steel plate combination beam bridge panel, method for prefabricating includes: that pedestal is first opened in ground setting on the scene, the both ends of lateral steel strand wires are anchored at two respectively and first open simultaneously tensioning on pedestal, then it is first opened at two and pours muti-piece overall with floorings between pedestal, muti-piece overall with floorings transversely arrange by steel strand wires, the preset clearance between adjacent overall with floorings, every piece of overall with floorings reach concrete strength requirement and age require after put, and lateral steel strand wires are cut from preset clearance；Construction method includes that prefabricated overall with floorings are layed on the plate girder set up, and after every piece of overall with floorings are fixedly connected with plate girder, adjacent overall with floorings are fixedly connected.Construction technology provided by the present application can be improved the quality of construction efficiency and steel plate combination beam overall with floorings.
Description
Technical field
This application involves the construction fields of steel plate combination beam bridge, in particular to a kind of steel plate combination beam bridge panel
Method for prefabricating and construction method.
Background technique
Currently, there are mainly two types of the most frequently used structure types of steel plate combination beam bridge panel, one is reinforced concrete bridge deck plate,
Another kind is post-tensioned prestressed concrete floorings.Reinforced concrete bridge deck plate bearing capacity is typically small, and this structure type is applied
The main problem found in work and operation is floorings complicated construction technique and is easy to crack；Therefore modern bridge mostly uses post-tensioning
Prestressed concrete bridge panel, and the site operation quality of post-tensioned prestressing floorings is big by operator's quality influence, especially
It is that the quality of hole path pressure grouting in work progress is difficult to check and control.
Summary of the invention
The application is intended to provide the method for prefabricating and construction method of a kind of steel plate combination beam bridge panel, to improve steel plate combination
The quality of beam overall with floorings.
Embodiments herein is achieved in that
In a first aspect, the embodiment of the present application provides a kind of method for prefabricating of steel plate combination beam bridge panel, comprising: ground on the scene
Setting first open pedestal, by the both ends of lateral steel strand wires be anchored at respectively two it is described first open on pedestal and carry out tensioning, then exist
Two described first open pour muti-piece overall with floorings between pedestal, the muti-piece overall with floorings are along the lateral steel strand wires cloth
Set, the preset clearance between the adjacent overall with floorings, every piece of overall with floorings reach concrete strength requirement and
It puts and opens after age requirement, and the lateral steel strand wires are cut from the preset clearance.
The method for prefabricating of steel plate combination beam bridge panel provided by the present application finds the place for meeting requirement for bearing capacity, in advance
Muti-piece overall with floorings are made using pre-tensioning system, the cross after overall with floorings installation only perpendicular to the length direction of plate girder
To seam, not along the vertical abutment joint of the length direction of plate girder, bridge floor globality is greatly improved, and the total quality of bridge floor obtains
It improves.Overall with floorings are equal to the width of bridge floor perpendicular to the length of the length direction of plate girder, and overall with floorings are along plate girder
The width of length direction can divide smaller, bridge floor can be divided into muti-piece one across within, in order to be able to using public
The defeated mode of road transport is transported to bridge construction scene.In the case where overall with floorings overall with is prefabricated, plate girder can carried
Wider spacing is arranged in power in the case where reaching requirement, so that construction period and the cost of plate girder can also be saved.
When due to each tensioning, for security consideration, prevent lateral steel strand wires from deviating from from the anchor for first opening pedestal
It injures, lateral steel strand wires both ends also need to reserve some length other than anchorage point more, so each overall with floorings
Need to cut the lateral steel strand wires that both ends have more after molding, in general these parts being subtracted can not do him again and use.And this
In application between two stretching bed seats tensioning once lateral steel strand wires when prefabricated muti-piece overall with floorings, can control adjacent complete
After preset clearance between wide floorings cuts lateral steel strand wires from preset clearance, length is trimmed without further, from
And tensioning can make muti-piece overall with floorings simultaneously not only to save the duration every time, but also substantially reduce the damage of lateral steel strand wires
Consumption plays the effect for reducing cost.In addition, tensioning is produced once, muti-piece can also reduce the probability of tensioning personnel replacement,
Guarantee that the tensioning personnel of muti-piece overall with floorings are identical, reduce difference caused by human factor, be convenient for volume production, improves yield rate.
In a kind of embodiment of the application, optionally, the more lateral steel strand wires are accumulated into steel beam, by the steel
Beam is anchored at two described first open and carries out tensioning between pedestal, and the steel beam is every one of 125mm arrangement.
By setting the arrangement form of lateral steel strand wires to first to integrate steel beam and then again with the spaced apart of 125mm
Form can either meet prestressing force requirement, and stress damage is less likely to occur compared to single lateral steel strand wires at the steel beam of stock.
In a kind of embodiment of the application, optionally, before putting, the concrete strength of the overall with floorings reaches
To the 90% of design strength, age reaches 7 days.
The concrete strength of overall with floorings is required to reach 90% or more of design strength, age before putting by limitation
Phase reaches 7 days or more, just discharges after concrete strength is good, lateral steel strand wires and concrete are well combined, reduces and open due to putting
The probability for causing prefabricated overall with floorings to destroy.
In a kind of embodiment of the application, optionally, the length of each overall with floorings is less than or equal to 17m, often
The width of a overall with floorings is less than or equal to 3m.
When needs are in overall with floorings prefabricated apart from the farther away place in bridge construction scene, due to prefabricated profiled overall with
Floorings length is the bridge deck width of bridge, the considerations of for highway transportation, construction technology provided by the present application optionally for
Bridge deck width is less than or equal to the bridge of 17m, and bridge floor is divided into multiple overall with floorings every 3m or less than the spacing of 3m,
It is public convenient for being carried out using common beam car to which the size of every piece of prefabricated profiled overall with floorings is less than or equal to 17m × 3m
Road transport is defeated.
In a kind of embodiment of the application, optionally, it is described transverse direction steel strand tension to after reaching prestressing force requirement,
Two described first open bind multiple frameworks of steel reinforcement between pedestal, it is cast-in-place that template is respectively set outside each framework of steel reinforcement；
By cast-in-place, at the structure with downwardly convex supporting part, shearing is arranged in the bottom of the supporting part in the overall with floorings
Slot.
When first opening at two and bind multiple frameworks of steel reinforcement between pedestal, multiple frameworks of steel reinforcement can be bound simultaneously, production speed
Degree is fast；Due to making muti-piece overall with floorings simultaneously between two stretching bed seats, relative to the mode of monolithic production, primary
The transverse prestress difference for drawing the production method of prefabricated muti-piece to make overall with floorings is smaller, is integrated by these overall with floorings
Bridge floor each section transverse prestress difference it is small, bridge floor is integrally more stable.By the cast-in-place overall with floorings with supporting part,
Thickness of the overall with floorings at the position of the supporting part is larger, and overall with floorings and steel plate beam connecting node can be enhanced, and
And supporting part position can also provide the space of setting shearing slot, in order to be connected by the vertical connector such as WELDING STUDS and plate girder
It connects.
Second aspect, the application provide a kind of construction method of steel plate combination beam bridge panel comprising:
It will successively be spread using overall with floorings described in the prefabricated muti-piece of method above-mentioned along the length direction of the plate girder
On the plate girder set up, after every piece of overall with floorings are fixedly connected with the plate girder, described in adjacent
Overall with floorings are fixedly connected.
A kind of construction method of steel plate combination beam bridge panel provided by the present application is first adopted in the place for meeting requirement for bearing capacity
With the prefabricated overall with floorings of the method for first tension steel wring line, finally these prefabricated overall with floorings are mounted on and set up completion
On plate girder.After overall with floorings are prefabricated in advance, on-site consolidation is on plate girder, with existing post-tensioned prestressing floorings phase
Than saving the time of cast in situs and maintenance, substantially reducing the duration, and without presetting steel in floorings in the application
Twisted wire pipeline, construction procedure is simple, and steel strand wires are better in conjunction with concrete；And the floorings being installed only have lateral connect
Seam does not have a vertical abutment joint, floorings good integrity, and the spacing setting of plate girder, can be with without considering the detailing requiments of floorings
Spacing is arranged wider, cost is saved, accelerates construction efficiency.
In a kind of embodiment of the application, optionally, it is at least latter across steel plate erection after the completion of, it is previous across
The overall with floorings are laid on plate girder.
In a kind of embodiment of the application, optionally, the overall with floorings are held by cast-in-place at downwardly convex
The structure in support portion, the bottom setting shearing slot in the supporting part；
The overall with floorings are laid with after welding WELDING STUDS on the plate girder, the WELDING STUDS is made to protrude into the shearing
Slot, gap of the slip casting to fill up in the shearing slot into the shearing slot, reaches to the practical slip casting intensity in the shearing slot
Next step is carried out again after to 95% or more of design slip casting intensity.
By the way that shearing slot is arranged in the supporting part of overall with floorings, WELDING STUDS is set on plate girder, and WELDING STUDS, which protrudes into, to be cut
The sealing of power slot grouting behind shaft or drift lining, to realize that overall with floorings are relatively fixed with plate girder, prevents during subsequent construction, overall with bridge
Sliding or dislocation occur for panel.
In a kind of embodiment of the application, optionally, the adjacent overall with floorings are poured using wet joint process
Between seam to realize that the adjacent overall with floorings are fixedly connected, and the seam from the seam of span centre to pier coping portion according to
It is secondary to pour.
By first pouring the seam of span centre, after-pouring be located at the seam of pier coping portion, make it is each across overall with floorings by
Span centre is gradually fixed to the position of the fulcrum of pier coping portion, during overall with floorings are relatively fixed by wet joint process,
The overall stability of overall with floorings is higher.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the prefabricated on-the-spot schematic of overall with floorings provided by the embodiments of the present application；
Fig. 2 is I magnified partial view in Fig. 1；
Fig. 3 is the provided by the embodiments of the present application first across steel plate erection schematic diagram；
Fig. 4 is the provided by the embodiments of the present application second across steel plate erection schematic diagram；
Fig. 5 is that the provided by the embodiments of the present application first across overall with floorings are laid with schematic diagram；
Fig. 6 is across the steel plate erection schematic diagram of third provided by the embodiments of the present application；
Fig. 7 is that the provided by the embodiments of the present application second across overall with floorings are laid with schematic diagram；
Fig. 8 is the whole paving schematic diagram of overall with floorings of bridge provided by the embodiments of the present application；
Fig. 9 is that the seam of span centre provided by the embodiments of the present application pours schematic diagram；
Figure 10 is that the seam of pier coping portion provided by the embodiments of the present application pours schematic diagram；
Figure 11 is the structural schematic diagram of combined steel plate beam and overall with floorings provided by the embodiments of the present application；
Figure 12 is the enlarged drawing of the part IX in Fig. 9；
Figure 13 is the enlarged drawing of X section in Figure 10.
Icon: 10- bridge pier；20- plate girder；30- Bridge Erector；100- overall with floorings；110- preset clearance；
The supporting part 120-；200- transverse direction steel strand wires；300- seam；The seam of 310- span centre；The seam of 320- pier coping portion；
400- WELDING STUDS；500- first opens pedestal.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is
Some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model of the application protection
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present application, it should be noted that if occur term " on ", "lower", " vertical ", " transverse direction ", "inner",
The orientation or positional relationship of the instructions such as "outside" be based on the orientation or positional relationship shown in the drawings or this application product use
When the orientation or positional relationship usually put, be merely for convenience of description the application and simplify description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of application.If being only used for distinguishing description in addition, occurring term " first ", " second " etc. in the description of the present application, and cannot
It is interpreted as indication or suggestion relative importance.
If being not offered as requiring component absolute in addition, occurring the terms such as term "horizontal", "vertical" in the description of the present application
Horizontal or pendency, but can be slightly tilted.If "horizontal" only refers to that its direction is more horizontal with respect to for "vertical", not
It is to indicate that the structure is had to fully horizontally, but can be slightly tilted.
In the description of the present application, it is also necessary to which explanation is unless specifically defined or limited otherwise, if there is term
" setting ", " installation ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.
For the ordinary skill in the art, the concrete meaning of above-mentioned term in this application can be understood with concrete condition.
Overall with floorings described herein refer to length direction (i.e. the direction of traffic of the bridge floor) division along combination beam
Plate, the length of overall with floorings be the width of bridge floor, overall with floorings width be divide spacing distance.
Embodiment
The embodiment of the present application provides a kind of pre-tensioned prestressing steel plate combination beam bridge panel method for prefabricating, for improving steel plate group
The construction efficiency and quality of beam bridge panel are closed, which can simplify construction procedure, the bearing capacity for improving floorings, subtract
The seam of length direction of the bridge floor of few bridge along plate girder, enables the floorings of steel plate combination beam to take into account and improves wanting for quality
Summation improves the requirement of construction efficiency.
In a kind of pre-tensioned prestressing steel plate combination beam bridge panel construction method that the embodiment of the present application also provides, to be laid with peace
Fill floorings made from method for prefabricating above-mentioned.
Floorings in the present embodiment are overall with floorings 100, i.e., only take spacing to draw bridge floor in the length direction of bridge floor
It is divided into muti-piece overall with floorings 100, the width of the overall with floorings 100 about divides spacing, the length of the overall with floorings 100
Equal to the width of bridge floor.Described lateral steel strand wires 200 are that the steel of the width direction arrangement of the bridge floor along bridge twists in the application
Line, namely arranged on overall with floorings 100 along the direction perpendicular to 20 length direction of plate girder.
In prefabrication step, as shown in Fig. 1, pedestal 500 is first opened in ground setting on the scene, by the two of lateral steel strand wires 200
End be anchored at respectively two it is described first open on pedestal 500 and carry out tensioning, then poured between pedestal 500 in two described first open
Muti-piece overall with floorings, the muti-piece overall with floorings 100 are arranged along the lateral steel strand wires 200, in the adjacent overall with
Preset clearance 110 between floorings 100, after every piece of overall with floorings 100 reach concrete strength requirement and age requirement
It puts and opens, and the lateral steel strand wires 200 are cut from the preset clearance 110.
In installation steps, as shown in Fig. 8, by muti-piece overall with floorings 100 along plate girder 20 length direction successively
It is layed on the plate girder 20 set up, fixed lateral steel strand wires 200 are perpendicular to plate girder 20 in every piece of overall with floorings 100
Length direction, it is after every piece of overall with floorings 100 are fixedly connected with plate girder 20, adjacent overall with floorings 100 are fixed
It is connected as one.
After overall with floorings 100 are prefabricated in advance, on-site consolidation is on plate girder 20, with existing post-tensioned prestressing overall with
Floorings 100 are compared, and the time of cast in situs and maintenance is saved, and substantially reduce the duration, and without complete in the application
Transverse direction 200 pipeline of steel strand wires is preset in wide floorings 100, construction procedure is simple, and lateral steel strand wires 200 are better in conjunction with concrete
It is good.
Due in the application overall with floorings 100 divide along the length direction of plate girder 20, it is prefabricated using overall with, it is complete
Wide floorings 100 only have the lateral seam 300 of the length direction perpendicular to plate girder 20 after installing, not along plate girder 20
The vertical abutment joint of length direction, bridge floor globality greatly improve, and the total quality of bridge floor is improved.And overall with floorings
100 entirety are laid on plate girder 20, and the both ends of overall with floorings 100 need not ride upon the position of bridge pier 10, overall with floorings
100 are equal to the width of bridge floor, length of the overall with floorings 100 along plate girder 20 perpendicular to the length of the length direction of plate girder 20
The length in direction can be unrestricted, and bridge floor can be divided into muti-piece one across within, in order to be able to using highway transportation
Mode is transported to bridge construction scene.In the case where 100 overall with of overall with floorings is prefabricated, plate girder 20 can be reached in bearing capacity
To wider spacing is arranged in the case where requirement, to save construction period and the cost of plate girder 20.
It should be noted that term " put and open ", which refers to, discharges the two of lateral steel strand wires 200 in the construction of this field pre-tensioning system
A anchored end.
When due to each tensioning, for security consideration, prevent lateral steel strand wires 200 from the anchor for first opening pedestal 500
Place's abjection injures, and lateral 200 both ends of steel strand wires are other than length needed for reserved anchoring, it is also necessary to reserve some length more
Degree, so overall with floorings 100 need to cut the lateral steel strand wires 200 that both ends have more, these portions being subtracted after forming every time
In general his can not be done again by dividing uses.
And in the application " tensioning once prefabricated muti-piece ", i.e., the primary lateral steel strand wires of tensioning between two stretching bed seats
Prefabricated muti-piece overall with floorings 100, the preset clearance 110 that can control between adjacent overall with floorings 100 make lateral steel when 200
After twisted wire 200 is cut from preset clearance 110, length is without further trimming, so that tensioning can not only make simultaneously every time
Make muti-piece overall with floorings 100 to save the duration, and substantially reduce the waste of lateral steel strand wires 200, play reduction at
This effect.In addition, tensioning is produced once, muti-piece can also reduce the probability of tensioning personnel replacement, guarantee muti-piece overall with floorings
100 tensioning personnel are identical, reduce difference caused by human factor, are convenient for volume production, improve yield rate.
Referring to shown in attached drawing 1 and attached drawing 2, prefabrication step above-mentioned includes:
Prefabrication step 11): referring to design drawing requirement, according to the rule of the overall with floorings 100 divided on design drawing
Lattice, the quantity of overall with floorings 100 and turnover require the prefabricated place for selecting to meet requirement for bearing capacity and size.
Prefabrication step 12): stretching bed seat is set in prefabricated place, more lateral steel strand wires 200 are integrated into steel beam, every
The both ends of one of steel beam are anchored at two and first open by 125mm carries out tensioning between pedestal 500.
Prefabrication step 13): to prefabrication step 2 above-mentioned) in lateral steel strand wires 200 be stretched to the prestressing force for reaching design
And after stablizing holding two hours, the binding of 100 regular reinforcement of overall with floorings and template group installation are carried out.Two are first opened pedestal 500
Between bind the frameworks of steel reinforcement of multiple overall with floorings 100, each framework of steel reinforcement is individually bound, and outside each framework of steel reinforcement
Module and cast-in-situ concrete is closed, is part to lower process by the bottom template configuration of each template group, in order to shape according to design drawing
At the supporting part 120 of overall with floorings 100.
Multiple overall with floorings 100 transversely arrange by steel strand wires 200, the overall with floorings of adjacent overall with floorings 100
Preset clearance 110 is set between 100.
It should be noted that according to the design structure assembling reinforcement skeleton of armored concrete, module and cast-in-situ is closed, to form needs
Structure be that (such as how assembling reinforcement skeleton, setting template group are formed in the present embodiment with supporting part 120 prior art
100 structure of overall with floorings), the method for tie with reinforcing bar, template group setting is not described in detail in the present embodiment.
In the present embodiment, framework of steel reinforcement, which is also possible to directly lift to two after workshop binds and completes in advance, first to be opened
Between pedestal 500.
Prefabrication step 14): shearing slot is set in the supporting part of overall with floorings 100 120 in order to accommodate WELDING STUDS 400.
The set-up mode of shearing slot can be, and make the position of default shearing slot when template group in prefabrication step 130 in order to one
Pouring molding.
Prefabrication step 15): after overall with floorings 100 reach concrete strength requirement and age requires, carry out putting behaviour
Make.
In the present embodiment, it is desirable that before putting, concrete strength reaches 90% of design strength or more, the age of concrete
Phase reaches 7 days or more, to guarantee that lateral steel strand wires 200 are well combined with concrete, concrete strength is allow to resist lateral steel
The damage of 200 instantaneous recovery bring of twisted wire is reduced due to putting the probability for causing prefabricated overall with floorings 100 to destroy.
Prefabrication step 16): it, will be lateral from the preset clearance 110 of adjacent overall with floorings 100 after the completion of putting an operation
Steel strand wires 200 are cut, and are separated into multiple overall with floorings 100 individually.When shearing lateral steel strand wires 200, optionally from reserved
The middle position in gap 110 is sheared, and so that each 100 both ends of overall with floorings is had remaining lateral steel strand wires 200, in order to cope with
Lateral steel strand wires 200 are sprung back, and are also convenient for preventing from bouncing back by lateral 200 bending of steel strand wires.
Prefabrication step 17): overall with floorings 100 are lifted to beam place is deposited by crane, are being deposited overall with bridge in the beam phase
The transport of panel 100 is live to bridge construction.
It should be noted that in bridge construction field, the resting period that the beam phase refers to the floorings of design requirement, this reality are deposited
It applies in example, depositing the beam phase is three to six months.The purpose for depositing the beam phase is arranged to be, overall with floorings 100 is made to reach shortest placement
Time, and overall with is also prevented from so that overall with floorings 100 reach stable within the resting period no more than longest standing time
Floorings 100 due to be more than deposit Liang Qiwei mat formation and occur arch deformation.
Installation steps above-mentioned include:
Installation steps 21): plate girder 20 is set up on bridge pier 10.
Installation steps 22): it is laid with overall with floorings 100.
Before being laid with overall with floorings 100, WELDING STUDS 400 is welded on plate girder 20, is laid with overall with floorings 100
When, the shearing slot of overall with floorings 100 is directed at WELDING STUDS 400, WELDING STUDS 400 is made to protrude into shearing slot, then into shearing slot
Slip casting shears the gap of slot to fill up, then suspension of works.Intensity wait shear the injecting paste material in slot reaches design strength
Next step construction is carried out after 95% or more.Injecting paste material is chosen as strong concrete.
It is laid with it is alternatively possible to carry out overall with floorings 100 after the completion of all plate girders 20 are set up.
Optionally, in the present embodiment using it is at least latter across plate girder 20 set up after the completion of, it is previous across plate girder
The mode that overall with floorings 100 are laid on 20 carries out overall with floorings 100 and is laid with work.
Illustratively, referring to shown in attached drawing 3, attached drawing 4, attached drawing 5, N-1 is indicated to have set up the part of completion or is in figure
Access bridge is roadbed, in figure N indicate first across, N+1 indicate second across, N+3 indicate third across ... and so on.
First using Bridge Erector 30 first sets up first across plate girder 20, then set up second across plate girder 20, then general
Bridge Erector 30 and its track integrally move backward with vacate first across position, first across plate girder 20 on be laid with overall with bridge
Panel 100；
Referring next to shown in attached drawing 6, attached drawing 7, first across overall with floorings 100 be laid with after the completion of, set up third across
Plate girder 20, then Bridge Erector 30 and its track are integrally moved backward with vacate second across position, second across steel
Overall with floorings 100 are laid on plate-girder 20；
Referring to first across, second across the paving modes of overall with floorings 100 the overall with floorings 100 of bridge are all spread
If completing, attached drawing 8 shows the schematic diagram of the whole paving overall with floorings 100 of bridge.
It is each across the installation of overall with floorings 100 before first ensure in the corresponding each overall with floorings of plate girder 20
100 position is welded with WELDING STUDS 400, it is each across the corresponding plate girder 20 of overall with floorings 100 on shearing slot slip casting,
And the actual strength to injecting paste material reach design strength 95% or more and then set up it is latter across plate girder 20.
Installation steps 23): overall with floorings 100 connect.
After the completion of the overall with floorings 100 of bridge are all mated formation, adjacent overall with bridge is connected using wet 300 technique of seam
Panel 100.As shown in attached drawing 9 and attached drawing 10, the seam 310 of span centre is first poured, then successively towards the direction of both sides bridge pier 10
Seam 300 is poured, the seam 320 of pier coping portion is finally poured.Putting for the seam 310 of span centre in attached drawing 9 is shown in attached drawing 12
It is big to scheme, the enlarged drawing of the seam 320 of pier coping portion in attached drawing 10 is shown in attached drawing 13.
Installation steps 24): maintenance bridge floor.
The combination steel that a kind of 100 construction technology of pre-tensioned prestressing steel plate combination beam overall with floorings provided by the present application is formed
Plate-girder 20 and the structure of overall with floorings 100 are as shown in Fig. 11, and combined steel plate beam 20 and overall with bridge floor are shown in attached drawing 11
The cross-sectional structure schematic diagram of plate 100.
Pre-tensioning system is applied to pre- by 100 construction technology of pre-tensioned prestressing steel plate combination beam overall with floorings provided by the present application
In overall with floorings 100 processed, 100 overall with of overall with floorings is prefabricated, and overall with floorings 100 are in the length direction along plate girder 20
It is divided into muti-piece, only transverse joint (is laterally the side perpendicular to the length direction of plate girder 20 after bridge floor is installed
To), without vertical abutment joint (vertical is the direction of the length direction along plate girder 20), the globality of bridge floor is greatly improved, entirely
Wide floorings 100 are high-quality, and construction procedure is simple, and construction efficiency is high.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of method for prefabricating of steel plate combination beam bridge panel characterized by comprising pedestal is first opened in ground setting on the scene, will
The both ends of lateral steel strand wires be anchored at respectively two it is described first open on pedestal and carry out tensioning, then described first open pedestal at two
Between pour muti-piece overall with floorings, the muti-piece overall with floorings are arranged along the lateral steel strand wires, adjacent described complete
Preset clearance between wide floorings, every piece of overall with floorings reach concrete strength requirement and age require after put, and
The lateral steel strand wires are cut from the preset clearance.
2. a kind of method for prefabricating of steel plate combination beam bridge panel according to claim 1, which is characterized in that described in more
Lateral steel strand wires accumulate steel beam, and the steel beam is anchored at two described first open and carries out tensioning between pedestal, the steel beam is every
Together every 125mm arrangement.
3. a kind of method for prefabricating of steel plate combination beam bridge panel according to claim 1, which is characterized in that open it putting
Before, the concrete strength of the overall with floorings reaches the 90% of design strength, and age reaches 7 days.
4. a kind of method for prefabricating of steel plate combination beam bridge panel according to claim 1, which is characterized in that each described complete
The length of wide floorings is less than or equal to 17m, and the width of each overall with floorings is less than or equal to 3m.
5. a kind of method for prefabricating of steel plate combination beam bridge panel according to claim 1-4, which is characterized in that
The transverse direction steel strand tension binds multiple frameworks of steel reinforcement in two described first open to after reaching prestressing force requirement between pedestal,
It is cast-in-place that template is respectively set outside each framework of steel reinforcement；The overall with floorings are held by cast-in-place at downwardly convex
The structure in support portion, the bottom setting shearing slot in the supporting part.
6. a kind of construction method of steel plate combination beam bridge panel characterized by comprising
By using overall with floorings described in muti-piece made of method for prefabricating described in claim 1 along plate girder length direction according to
It is secondary to be layed on the plate girder set up, it, will be adjacent after every piece of overall with floorings are fixedly connected with the plate girder
The overall with floorings are fixedly connected.
7. a kind of construction method of steel plate combination beam bridge panel according to claim 6, which is characterized in that it is at least latter across
Steel plate erection after the completion of, it is previous across plate girder on be laid with the overall with floorings.
8. a kind of construction method of steel plate combination beam bridge panel according to claim 6, which is characterized in that the overall with bridge
Panel is by the cast-in-place bottom setting shearing slot at the structure with downwardly convex supporting part, in the supporting part；
The overall with floorings are laid with after welding WELDING STUDS on the plate girder, the WELDING STUDS is made to protrude into the shearing slot,
Gap of the slip casting to fill up in the shearing slot into the shearing slot, reaches to the practical slip casting intensity in the shearing slot and sets
95% or more of meter slip casting intensity carries out next step again.
9. a kind of construction method of steel plate combination beam bridge panel according to claim 6, which is characterized in that use wet seam
Technique pours the seam between the adjacent overall with floorings to realize that the adjacent overall with floorings are fixedly connected, and by
The seam of span centre is successively poured to the seam of pier coping portion.
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| CN201910587109.2A CN110154230A (en) | 2019-07-01 | 2019-07-01 | A kind of method for prefabricating and construction method of steel plate combination beam bridge panel |
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| CN201910587109.2A CN110154230A (en) | 2019-07-01 | 2019-07-01 | A kind of method for prefabricating and construction method of steel plate combination beam bridge panel |
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Cited By (1)
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| CN115416153A (en) * | 2022-09-19 | 2022-12-02 | 涿州市恒旗建材有限公司 | Long-direction stretching steel die prestress production process |
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