CN106758857A - The construction method of precast block formula secondary prestress Wavelike steel webplate combination beam - Google Patents
The construction method of precast block formula secondary prestress Wavelike steel webplate combination beam Download PDFInfo
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- CN106758857A CN106758857A CN201710136793.3A CN201710136793A CN106758857A CN 106758857 A CN106758857 A CN 106758857A CN 201710136793 A CN201710136793 A CN 201710136793A CN 106758857 A CN106758857 A CN 106758857A
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- precast concrete
- base plate
- top board
- wavelike steel
- steel webplate
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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
- 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
- E01D2101/285—Composite prestressed concrete-metal
Abstract
The invention discloses a kind of construction method of precast block formula secondary prestress Wavelike steel webplate combination beam, including by multiple i-shaped beamses body units, by the horizontal and vertical combination beam body being formed by connecting, i-shaped beamses body unit is made up of the splicing of individually prefabricated precast concrete top board, precast concrete base plate and Wavelike steel webplate；Shear connector, top board lateral connection reinforcing bar, the longitudinally connected reinforcing bar of top board and top board prestressed pore passage are embedded with precast concrete top board；Lower shear connector, base plate lateral connection reinforcing bar, the longitudinally connected reinforcing bar of base plate, prestressed pore passage of base plate and base plate secondary prestress duct are embedded with precast concrete base plate；Wavelike steel webplate periphery is reserved with the bolt hole for connecting the upper and lower shear connector.The present invention carries out beam body erection using the assembled structure type of precast block, and the volume and weight of each part are all corresponding smaller, transport stabilization, Hoisting Security, beneficial to construction.
Description
Technical field
The present invention relates to bridge construction technical field, more particularly, to a kind of precast block formula two suitable for large bridge
The construction method of secondary prestressing force Wavelike steel webplate combination beam.
Background technology
Traditional prefabricated case beam web is generally concrete material, and not only weight is big and easy to crack, therefore concrete box girder is only suitable for
It is applied to small across footpath（Below 40m）Highway bridge.Wavelike steel webplate PC combined box beams are carried out from ACSI associations in 1988
After introduction, Wavelike steel webplate PC combination beams achieve bridge as a kind of economic, efficient, easy construction novel bridge form
The extensive approval of worker is simultaneously applied to big-and-middle-sized bridge by expansion（More than 50m across footpaths）Practical Project in.
Constructed using the following two kinds form more than existing Wavelike steel webplate PC combined box beams：
A kind of is by the prefabricated concrete roof of the reinforcing bar of whole box girder body, the prefabricated concrete floor of reinforcing bar and Wavelike steel webplate point
For three parts carry out integral prefabricated respectively, lift again afterwards in place, assembly is connected by screw bolts at bridge location.Chinese patent
" pin-connected panel prestressed concrete combined box beam "（Application number 200620126505.3）The prefabricated component of said structure is disclosed, and
Wavelike steel webplate and top board, the connected mode of base plate are highlighted.But, due to the box beam top board of this structure, base plate and
Web is integral structure, and the weight of single prefabricated components is still very heavy.The Wavelike steel webplate case of a width of 16.75m of such as bridge
Beam bridge, its weight per linear meter(lin.m.) is up to more than 10t, even if it is still very difficult to lift single prefabricated components during construction respectively.Its
Secondary, for convenience of transporting, the length of prefabricated components generally will not be very long, and above-mentioned full span erection structure is only limitted to the bridge of small across footpath,
For the bridge of Long span, top board and web still can be using the prefabricated forms of segmentation.In addition, the patent does not account for actually applying
Situations such as applying opportunity of man-hour prestressed strand and reserving hole channel, and also not plus discussed for the treatment measures of hogging moment area,
If lacking the measure of reply beam body loaded deformation and the detailed consideration of Specific construction process aspect, the feasibility of construction is poor.
Another kind is that top board, base plate and Wavelike steel webplate are fixed the precast assembly unit for being linked to be I-shaped structure, at the scene
Bridge construction, such as Chinese patent " two times tensioning are completed after the assembled rigid unit of multiple I-shaped structures is carried out into horizontal and vertical splicing
Prestressing force assembled Wavelike steel webplate combination beam and its construction method "（Application number 201510255113.0）Disclose above-mentioned knot
The transverse H-shaped prefabricated member of structure, and apply secondary prestress in corresponding opportunity, realize the laterally assembled of transverse H-shaped prefabricated member.It is above-mentioned
Prefabricated assembled rigid unit volume is big, tonnage weight（Weight of such as single prefabricated I-shaped unit per linear meter(lin.m.) is up to 5t or so）,
And the stability of itself is also poor, easily causes cost of transportation and hoisting cost rises, will to lifting appliance in installation process
Ask higher, hoisting safety is relatively low；Simultaneously because the Wavelike steel webplate in assembled rigid unit is fixedly connected between top board and base plate,
Therefore each part in the precast assembly unit can not adjust, it is not replaceable, increased the difficulty of later maintenance；Simultaneous
The increasingly increase of the volume of traffic, the bearing capacity of beam body cannot adapt to the traffic under new situation.
The content of the invention
The present invention provides a kind of construction method of precast block formula secondary prestress Wavelike steel webplate combination beam, it is therefore intended that
Solve when existing Wavelike steel webplate PC combined box beams are applied to large bridge easily to occur to transport, lift and the side such as later maintenance
The problem in face.
To achieve the above object, the present invention can take following technical proposals：
The construction method of precast block formula secondary prestress Wavelike steel webplate combination beam of the present invention, mainly including following step
Suddenly：
The first step, by Bridge Design requirement, precast concrete top board, the concrete of independent prefabricated composition i-shaped beamses body unit
Native base plate and Wavelike steel webplate：
For precast concrete top board, roof steel bar net of the first colligation with lateral connection muscle and longitudinally connected muscle, then by pier top
The WELDING STUDS of hogging moment prestressed pore passage and upper shear connector is arranged in roof steel bar net, is poured afterwards；
For precast concrete base plate, baseplate reinforcing bar net of the first colligation with lateral connection muscle and longitudinally connected muscle, then will once
The WELDING STUDS of prestressed pore passage, secondary prestress duct and lower shear connector is arranged in baseplate reinforcing bar net, when pouring completion
After form removal, the tensioning steel Shu Jinhang tensioning in a prestressed pore passage is pointed to；
For Wavelike steel webplate, first punch process corrugated sheet steel, then remain for connecting upper and lower shearing company in advance in corrugated sheet steel periphery
The bolt hole of fitting；
Second step, carries out assembled in situ preparation：
Mobile support device is set between the adjacent abutment or bridge pier that complete construction at the scene used as auxiliary construction platform, meanwhile,
By the precast concrete top board of prefabricated completion, precast concrete base plate and corrugated steel web transport to job site；
3rd step, is combined the horizontally-spliced assembling of beam：
Precast concrete base plate, Wavelike steel webplate and precast concrete top board are lifted to mobile support dress successively with hanging device
Put, blending bolt bolt mode carries out precast concrete base plate and Wavelike steel webplate, Wavelike steel webplate and precast concrete top
The connection of plate, completes the assembling construction of first piece i-shaped beamses body unit；
Then by Mobile support device along bridge cross direction horizontal transfer, the construction procedure according to first piece i-shaped beamses body unit is complete
The assembling construction of other i-shaped beamses body units transversely set in into the spanning；
Lateral connection muscle between the adjacent i-shaped beamses body unit of colligation afterwards, pours to form precast concrete top board longitudinal wet and connect
Seam and precast concrete base plate longitudinal wet joint, and after precast concrete base plate longitudinal wet joint reaches some strength, contraposition
In the tensioning steel Shu Jinhang tensioning in precast concrete base plate secondary prestress duct；
4th step, is combined the longitudinal spliced assembling of beam：
Mobile support device is transferred to other spanning positions successively, the 3rd step operation is repeated, each spanning beam body in longitudinal direction is completed
Construction；
Longitudinally connected muscle of the colligation adjacent bridge between, pours to form laterally wet seam or crossbeam, and according to central sill after first side bar
Order, the tensioning steel in contiguous prefabricated concrete roof pier top hogging moment prestressed pore passage is pointed to using symmetrical tensioning principle
Shu Jinhang tensioning, forms continuous beam on many supports system；
5th step, completes the erection of affiliated facility, terminates construction.
The upper shear connector is identical with lower shear connector structure, including connecting plate and being vertically welded in the company
Edge on fishplate bar has a waveform wing plate of connecting hole, the another side of connecting plate be welded be embedded in precast concrete top board or
WELDING STUDS in precast concrete base plate.
Constitute single precast concrete top board, precast concrete base plate and the Wavelike steel webplate of the i-shaped beamses body unit
Length be respectively 5-30 meters.
The construction method of precast block formula secondary prestress Wavelike steel webplate combination beam of the present invention, using individually pre-
The precast concrete top board of i-shaped beamses body unit processed, precast concrete base plate and Wavelike steel webplate, then scene carry out splicing and apply
The mode of work.The present invention carries out piecemeal to existing integral prefabricated I-shaped component in a vertical enterprising step, on the one hand fully
Make use of " the fold effect " of Wavelike steel webplate to realize that box beam breaks the whole up into parts, prefabricated components volume is fully reduced, make component body
Product reduces, and more easily transports and lifts, and is conducive to the fast erecting of bridge, while avoiding integral prefabricated I-shaped component
The problem of self stability difference；On the other hand it is also distinctive weak " beam-ends effect " using Wavelike steel webplate, it is provided with top board
Duct for wearing hogging moment prestressed stretch-draw steel beam, employs a prestressed strand and two in precast concrete base plate
Secondary prestressed strand, with work progress perfect cooperation, realizes the maximum convenient of construction.Wherein, it is prefabricated in precast concrete base plate
Prestressed strand of post-stretching is completed, the stress for resisting concrete shrinkage and creep generation, and after the completion of box beam splicing,
Tensioning secondary prestress steel beam, can reduce the antiarch that combined box beam is produced by shrinkage and creep；Be embedded with top board and base plate for
The shear connector being connected with Wavelike steel webplate, adjacent top board and base plate can be by pouring wet seam at bridge construction scene
Mode carries out splicing laterally and/or longitudinally, and to obtain, the bridge of various requirement is wide, spanning.So, it is of the invention by I-shaped beam body
Top board, base plate and web in unit disassemble and carry out prefabricated, are effectively reduced the volume and weight of each prefabricated component, substantially reduce
Transport and hoisting difficulty；And because Wavelike steel webplate is attached by bolt with top board and base plate, if the later stage volume of traffic
During increase, the adjustment or maintenance to beam body height can also be realized, so as to reach increase by the replacing to Wavelike steel webplate
The purpose of bridge structure bearing capacity；It is movably connected between above-mentioned prefabricated component, can repeats to install and dismantle, therefore be torn open in bridge
Partial precast part can also be reused after removing, for the recyclable development of bridge structure provides a kind of effective thinking.It is specific next
Say, advantages of the present invention can be embodied in it is following some：
（1）The present invention carries out beam body erection using the assembled structure type of precast block, and the volume and weight of each part are all corresponding
It is smaller, stability of the prefabricated component in transportation can not only be effectively ensured, and be easily guaranteed that the peace of component in hoisting process
Quan Xing, beneficial to construction.
（2）Wavelike steel webplate in the present invention can be removed and installed, and facilitate maintenance and inspection of the later stage to beam body, while
The Wavelike steel webplate being damaged can be changed, realize adjustment beam body height, increase the purpose of structural-load-carrying capacity.
（3）Each part of Bridge of the present invention can be dismantled so that each part of bridge can be reused, it is to avoid coagulation
Soil and composite bridge are difficult to the problem of recycling.
（4）In addition to the alterable height of corrugated sheet steel, other concrete components are standard component to the present invention, possess extensive mark
The condition that quasi- metaplasia is produced.
（5）The present invention carries out assembly on the simple Mobile support device of form, it is not necessary to set special spelling on periphery
Dress field, is more suitable for the rapid construction of Urban Bridge.
Brief description of the drawings
Fig. 1 is the structural representation of i-shaped beamses body unit in the present invention.
Fig. 2 is the structural representation of precast concrete top board in Fig. 1.
Fig. 3 is the structural representation of precast concrete base plate in Fig. 1.
The structural representation of upper and lower shear connector in Fig. 4 Fig. 2,3.
Fig. 5, Fig. 6, Fig. 7 are work progress schematic diagrames.
Fig. 8-13 is the relevant drawings that schematic illustration is carried out to the present invention.
Specific embodiment
The construction method of precast block formula secondary prestress Wavelike steel webplate combination beam of the present invention, it is main include with
Lower step：
The first step, by Bridge Design requirement, individually carries out precast concrete top board 1, precast concrete base plate 2 and Wavelike steel webplate
3 it is prefabricated, above-mentioned prefabricated component by bolt 4 splice after can make up i-shaped beamses body unit as shown in Figure 1.
Specifically, during prefabricated precast concrete top board 1 as shown in Figure 2, first colligation is with lateral connection muscle 1.1 and longitudinal direction
The roof steel bar net of dowel 1.2, then pier top hogging moment prestressed pore passage 1.3 and upper shear connector 1.4 are arranged on top board
In bar-mat reinforcement, then restraining stencil, casting concrete are installed；After concrete reaches design strength, restraining stencil is removed.
During prefabricated precast concrete base plate 2 as shown in Figure 3, first colligation carries lateral connection muscle 2.1 and longitudinally connected muscle
2.2 baseplate reinforcing bar net, then prestressed pore passage 2.3, secondary prestress duct 2.4 and a lower shear connector 2.5 are installed
In baseplate reinforcing bar net, then restraining stencil, casting concrete are installed；Treat that concrete reaches design strength and removes restraining stencil
Afterwards, it is necessary to the tensioning steel Shu Jinhang tensioning being pointed in a prestressed pore passage 2.3, is lifting and setting up for resisting base plate
Due to the moment of flexure of deadweight generation in journey.
During prefabricated Wavelike steel webplate 3, first punch process corrugated sheet steel, then corrugated sheet steel periphery remain in advance connection on,
The bolt hole of lower shear connector 1.4,2.5.
Above-mentioned upper shear connector 1.4 and lower shear connector 2.5 are preformed parts, in order to reduce prefabricated cost,
Both use identical structure.As a example by above shear connector 1.4, as shown in figure 4, including being embedded in precast concrete top board 1
WELDING STUDS 1.4a of the interior and end with anti-drop block, WELDING STUDS is welded on connecting plate 1.4b, and connecting plate 1.4b another sides are vertical
It is welded with the waveform wing plate 1.4c with connecting hole.The position of above-mentioned connecting hole and the position of the periphery bolt hole of Wavelike steel webplate 3
It is corresponding, after both are alignd, wear fixing bolt 4（As shown in Figure 1）, you can quickly and easily complete precast concrete top
The splicing of plate 1 and Wavelike steel webplate 3.
Second step, carries out assembled in situ preparation：
Mobile support device 6 is set between the adjacent abutment or bridge pier 5 that complete construction at the scene used as auxiliary construction platform（As schemed
Shown in 5）, meanwhile, the precast concrete top board 1 of prefabricated completion, precast concrete base plate 2 and Wavelike steel webplate 3 are transported to and applied
Work scene.
3rd step, is combined the horizontally-spliced assembling of beam：
Precast concrete base plate 2, Wavelike steel webplate 3 and precast concrete top board 1 are lifted to mobile branch successively with hanging device
On support arrangement 6, with fixing bolt 4 by lower shear connector 2.5 and Wavelike steel webplate 3, upper shear connector 1.4 and waveform steel abdomen
Plate 3 is connected respectively, the first piece work that completion is made up of precast concrete top board 1, precast concrete base plate 2 and Wavelike steel webplate 3
The assembling construction of font beam body unit；
Then by Mobile support device 6 along bridge cross direction horizontal transfer, according to the construction procedure of first piece i-shaped beamses body unit
Complete the assembling construction of interior other i-shaped beamses body units for transversely setting of the spanning；
The lateral connection muscle 1.1,2.1 between the adjacent i-shaped beamses body unit top board of colligation, base plate is distinguished afterwards, and pours to be formed
Precast concrete top board longitudinal wet joint 7 and precast concrete base plate longitudinal wet joint 8（As shown in Figure 6）；In precast concrete
After base plate longitudinal wet joint 8 reaches some strength, the tensioning steel in precast concrete base plate secondary prestress duct 2.4 is pointed to
Shu Jinhang tensioning, the moment of flexure for resisting second phase load generation；
During due to assembled above-mentioned i-shaped beamses body unit, rigidity that need not be stronger in vertical direction is supported, therefore mobile support
Device 6 can be using the flat car for being provided with support frame.
4th step, is combined the longitudinal spliced assembling of beam：
Mobile support device is transferred to other spanning positions successively, the 3rd step operation is repeated, each spanning beam body in longitudinal direction is completed
Construction；
Longitudinally connected muscle 1.2,2.2 of the colligation adjacent bridge between top board, base plate, and pour to form laterally wet seam or crossbeam 9
（As shown in Figure 7）；When laterally wet seam or crossbeam 9 reach some strength, according to the order of central sill after first side bar, using symmetrical
Tensioning principle is pointed to the tensioning steel Shu Jinhang tensioning in contiguous prefabricated concrete roof pier top hogging moment prestressed pore passage 1.3,
Pier top hogging moment for resisting adjacent across footpath box beam, forms continuous beam on many supports system；
5th step, completes the erection of affiliated facility, terminates construction.
In order to reduce the workload of the wet seam of cast in situs, efficiency of construction is improved, constitute the single of i-shaped beamses body unit
The length of precast concrete top board 1, precast concrete base plate 2 and Wavelike steel webplate 3 is respectively 5-30 meters.
Vertically spliced the following is to Wavelike steel webplate built H beam of the present invention, and applied secondary pre- in opportune moment
The concrete principle explanation that the feasibility of this construction method of stress, reasonability are made：
Stress of the precast concrete base plate under two states is analyzed first.
1. the 1st state：
Precast concrete base plate as shown in Figure 8, the prestressing force that the stretch-draw prestressing force steel beam set in it is applied is N, then in advance
Section upper stress on concrete floor processed is：
2. the 2nd state：
When above-mentioned precast concrete floor combination turns into I-shaped Wavelike steel webplate combination beam, its I-shape cross section structure is as schemed
Shown in 9.
Apply prestressing force N in base plate, the moment of flexure to compound section neutral axis is：
Obtained by the area moment of upper lower section is equal：
The area of combination beam total cross-section is：
The moment of inertia of whole cross section is：
Wavelike steel webplate combination beam can not consider the work of web when anti-bending bearing capacity is calculated due to the non resistance axle power of web
With equivalent to without web plate section, therefore setting：
Then：
The stress of top board：
Make ratio of height to thickness
The then stress of top board：
The stress of base plate：
Have for general combination beam section, can obtain
By taking the Wavelike steel webplate combination beam of 30m across footpaths as an example.If, nowBring formula into（9）With（10）：
When the across footpath of bridge further increases,WithFurther increase, formula（10）Meet
As can be seen here, under the 1st state and the 2nd state, the stress approximately equal of precast concrete base plate.That is, existing in advance
The prestressing force that the prefabricated panel stage applies, is still held essentially constant after Wavelike steel webplate combination beam is overlapped into.Therefore waveform is claimed
Steel web combination beam take it is vertical layered it is assembled before and after this mechanical characteristics that can be held essentially constant of stress for co-bearing not
Denaturation.This characteristic provides the foundation for the vertical layered splicing of Wavelike steel webplate combination beam.
On the basis of above-mentioned analysis, ordinary steel-mixed built H beam and Wavelike steel webplate built H beam is back to discuss
Vertical fractionation with assembly during stress change.Wherein, using prestressing force as only consideration external force：
1. vertical split process：
Figure 10 is the schematic diagram that ordinary steel-mixed built H beam carries out vertical fractionation.
Figure 11 is the schematic diagram that Wavelike steel webplate built H beam carries out vertical fractionation.
2. it is vertical to splice+two stretching processes：
Figure 12 is that ordinary steel-mixed built H beam is vertically split and schematic diagram during two times tensioning.
Figure 13 is that Wavelike steel webplate built H beam is vertically split and schematic diagram during two times tensioning.
Contrast above-mentioned legend to can be seen that for Wavelike steel webplate built H beam, prestressing force is applied just in base plate
It seem an independent process；But the situation of ordinary steel-mixed combination is entirely different.Therefore, can be prefabricated in construction
Apply all or part of prestressing force during concrete floor, then by precast concrete base plate, Wavelike steel webplate and precast concrete
The vertical layered assembly of top board, can so greatly reduce the steel Shu Zhangla workloads at scene, improve factory prefabricating degree.
Claims (3)
1. a kind of construction method of precast block formula secondary prestress Wavelike steel webplate combination beam, it is characterised in that：Mainly include
Following steps：
The first step, by Bridge Design requirement, precast concrete top board, the concrete of independent prefabricated composition i-shaped beamses body unit
Native base plate and Wavelike steel webplate：
For precast concrete top board, roof steel bar net of the first colligation with lateral connection muscle and longitudinally connected muscle, then by pier top
The WELDING STUDS of hogging moment prestressed pore passage and upper shear connector is arranged in roof steel bar net, is poured afterwards；
For precast concrete base plate, baseplate reinforcing bar net of the first colligation with lateral connection muscle and longitudinally connected muscle, then will once
The WELDING STUDS of prestressed pore passage, secondary prestress duct and lower shear connector is arranged in baseplate reinforcing bar net, when pouring completion
After form removal, the tensioning steel Shu Jinhang tensioning in a prestressed pore passage is pointed to；
For Wavelike steel webplate, first punch process corrugated sheet steel, then remain for connecting upper and lower shearing company in advance in corrugated sheet steel periphery
The bolt hole of fitting；
Second step, carries out assembled in situ preparation：
Mobile support device is set between the adjacent abutment or bridge pier that complete construction at the scene used as auxiliary construction platform, meanwhile,
By the precast concrete top board of prefabricated completion, precast concrete base plate and corrugated steel web transport to job site；
3rd step, is combined the horizontally-spliced assembling of beam：
Precast concrete base plate, Wavelike steel webplate and precast concrete top board are lifted to mobile support dress successively with hanging device
Put, blending bolt bolt mode carries out precast concrete base plate and Wavelike steel webplate, Wavelike steel webplate and precast concrete top
The connection of plate, completes the assembling construction of first piece i-shaped beamses body unit；
Then by Mobile support device along bridge cross direction horizontal transfer, the construction procedure according to first piece i-shaped beamses body unit is complete
The assembling construction of other i-shaped beamses body units transversely set in into the spanning；
Lateral connection muscle between the adjacent i-shaped beamses body unit of colligation afterwards, pours to form precast concrete top board longitudinal wet and connect
Seam and precast concrete base plate longitudinal wet joint, and after precast concrete base plate longitudinal wet joint reaches some strength, contraposition
In the tensioning steel Shu Jinhang tensioning in precast concrete base plate secondary prestress duct；
4th step, is combined the longitudinal spliced assembling of beam：
Mobile support device is transferred to other spanning positions successively, the 3rd step operation is repeated, each spanning beam body in longitudinal direction is completed
Construction；
Longitudinally connected muscle of the colligation adjacent bridge between, pours to form laterally wet seam or crossbeam, and according to central sill after first side bar
Order, the tensioning steel in contiguous prefabricated concrete roof pier top hogging moment prestressed pore passage is pointed to using symmetrical tensioning principle
Shu Jinhang tensioning, forms continuous beam on many supports system；
5th step, completes the erection of affiliated facility, terminates construction.
2. the construction method of precast block formula secondary prestress Wavelike steel webplate combination beam according to claim 1, it is special
Levy and be：The upper shear connector is identical with lower shear connector structure, including connecting plate and being vertically welded in the company
Edge on fishplate bar has a waveform wing plate of connecting hole, the another side of connecting plate be welded be embedded in precast concrete top board or
WELDING STUDS in precast concrete base plate.
3. the construction method of precast block formula secondary prestress Wavelike steel webplate combination beam according to claim 1, it is special
Levy and be：Constitute single precast concrete top board, precast concrete base plate and the Wavelike steel webplate of the i-shaped beamses body unit
Length be respectively 5-30 meters.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098100A (en) * | 2018-09-26 | 2018-12-28 | 中铁四局集团有限公司 | The advanced installation engineering method of web in Wavelike steel webplate continuous bridge cantilever pouring |
| CN113463502A (en) * | 2021-08-03 | 2021-10-01 | 苏交科集团股份有限公司 | Prefabricated assembled corrugated steel web composite bridge and cantilever construction method thereof |
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