CN203795293U - Transverse-assembly corrugated steel web combination box beam with few supports - Google Patents

Transverse-assembly corrugated steel web combination box beam with few supports Download PDF

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Publication number
CN203795293U
CN203795293U CN201420018313.5U CN201420018313U CN203795293U CN 203795293 U CN203795293 U CN 203795293U CN 201420018313 U CN201420018313 U CN 201420018313U CN 203795293 U CN203795293 U CN 203795293U
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China
Prior art keywords
corrugated steel
transverse
steel web
combination box
top board
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CN201420018313.5U
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Chinese (zh)
Inventor
汤意
李华强
吴继峰
李斐然
万进
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Henan Provincial Communication Planning and Design Institute Co Ltd
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Henan Communications Planning Surver & Designing Institute Co Ltd
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Abstract

The utility model discloses a transverse-assembly corrugated steel web combination box beam with few supports. The transverse-assembly corrugated steel web combination box beam comprises a plurality of prefabricated H-shaped beam units (1) and transverse beams (5), wherein eyery two adjacent H-shaped beam units are connected to form the continuous multi-span combination box beam (5), and the lower end face a top-board wet joint (2) and the lower end face of a bottom-board wet joint (3) of every two adjacent prefabricated H-shaped beam units (1) are connected with a top-board lower-edge steel board (2-1) and a bottom-board lower-edge steel board (3-1) respectively. The transverse-assembly corrugated steel web combination box beam not only obtains the advantages of a corrugated steel web concrete continuous beam structure, but also can effectively overcome the defect of a cast-in-place corrugated steel web concrete combination box beam, and transport below a bridge does not need to be cut during construction. Meanwhile, the combination box beam of the structure does not need a pier cover beam, and prefabricated beams are connected into a whole through the transverse beams on the upper portion of piers. The transverse beams and the piers are prefabricated or cast in place, can be designed into beautiful structures, and meet the landscape requirement for the bridge in the city.

Description

The horizontal assembled corrugated steel web plate composite box girder of a kind of limited bracket
Technical field
The utility model belongs to the bridge technology field of highway and urban road, and what relate generally to is a kind of horizontal assembled corrugated steel web plate composite box girder and construction method.
Background technology
Wavelike steel webplate prestressed concrete combined box beam is as a kind of novel steel---concrete combined structure, take full advantage of the advantage that concrete crushing strength is high, Wavelike steel webplate shear strength is high, effectively steel, concrete bi-material are combined, having improved the service efficiency of material, is a kind of economic, reasonable, efficient form of structure.
At present, in urban road, the common construction method of Wavelike steel webplate combined bridge has three kinds.The first is the construction of full framing method.Full framing method is at regular intervals, gathers and sets up passive scaffold, forms operating platform, then Wavelike steel webplate, assembling reinforcement and fluid concrete is installed on support, stripping and support after concrete reaches intensity.The construction of full framing method is a kind of long-term adopted method, and advantage is not need Large-scale Hoisting equipment.Shortcoming is that working support and template consumption are large, and cast-in-place concrete amount is large, quality is difficult for ensureing, long in time limit, the road row that need to break under construction period bridge.The second is the outstanding casting construction method of Hanging Basket sections.Both utilized Hanging Basket as operating platform, and on this platform then fluid concrete of assembled Wavelike steel webplate, assembling reinforcement, after concrete reaches intensity, hanging basket advancing next sections of constructing.The method advantage is to adapt to Longspan Bridge, and segmented amount of concrete of building is less, and under construction period bridge, road can partly pass through.Shortcoming is work high above the ground, and road under bridge is existed to potential safety hazard, and due to segmented construction, the duration is longer, and cost is higher.The third is horizontal precast assembly method.Be prefabrication Wavelike steel webplate prestressed concrete i beam, transport is installed on Bridge Pier bent cap, and longitudinal and transverse bridge is connected to form to continuous beam on many supports to adjacent I beam part unit by cast-in-situ concrete.The method advantage is that batch production, standardization are prefabricated with the quality control that is beneficial to beam body, needs the amount of concrete of cast in situs less, and under construction period bridge, road is constantly gone, and the duration is short, and cost is low.Shortcoming is to need precasting yard and device for hoisting, causes that operating expenses is high, long construction period.And need bent cap be set at bridge pier place, cause Bridge Landscape weak effect.
Summary of the invention
The purpose of this utility model is the deficiency that adopts existing Full space support construction method, the outstanding casting and constructing of Hanging Basket sections and precast assembly construction method technology to exist for Wavelike steel webplate combined bridge, has proposed the horizontal assembled corrugated steel web plate composite box girder construction method of a kind of limited bracket.It had both had Wavelike steel webplate concrete continuous beam structural advantages, can effectively overcome again the problem that above-mentioned cast-in-place corrugated steel web concrete combined box grinder runs into, and under construction jackshaft, road is constantly gone.The combined box beam of this form of structure does not need to arrange pier cap beam simultaneously, precast beam connects into entirety by bridge pier upper beam, effectively shorten construction period, reduce production costs and construction cost, crossbeam, pier shaft adopt prefabricated or cast-in-place, can be designed to graceful moulding, meet Urban Bridge view needs.
The utility model is realized the technical scheme that above-mentioned purpose takes: a kind of horizontal assembled corrugated steel web plate composite box girder of limited bracket construction, comprise multiple prefabricated i beam unit and adjacent i beam unit is connected to form to the crossbeam of multispan continuous combined case beam, the wet seam of top board in described two adjacent precast H-beam unit and the lower surface of the wet seam of base plate are connected with respectively top board lower edge steel plate and base plate lower edge steel plate.
On top board lower edge steel plate described in the utility model and base plate lower edge steel plate, be provided with multiple pegs.
Precast H-beam described in the utility model unit is the prefabricated Wavelike steel webplate i beam of construction.
Peg described in the utility model and top board lower edge steel plate and base plate lower edge steel plate are for being welded to connect.
The utility model has following advantage compared with prior art:
(1) reduce support and template consumption, only set up a small amount of support in pier shaft both sides, reduced support and template consumption, saved cost, improved economy.
(2) under work progress jackshaft, road is constantly gone, and social benefit is good.
(3) structural key parts Wavelike steel webplate combination precast beam adopts batch production, standardization concentration pre-casting, and the amount of concrete of cast in situs is less, can effectively ensure construction quality, shortens the construction period.
(4) cancelled pier cap beam, i beam unit is by connecting into entirety at support upper pier head piece or with prefabricated pier head piece, and pier shaft and crossbeam can be designed to graceful moulding, have met Urban Bridge view needs.
Brief description of the drawings
Fig. 1 is the horizontal assembled corrugated steel web plate composite box girder construction sequence figure of the utility model limited bracket ().
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the horizontal assembled corrugated steel web plate composite box girder construction sequence figure of the utility model limited bracket (two).
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the horizontal assembled corrugated steel web plate composite box girder construction sequence figure of the utility model limited bracket (three).
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the utility model bearing mode middle cross beam profile.
Fig. 8 is the utility model pier beam consolidation mode middle cross beam profile.
Fig. 9 is the horizontal assembled corrugated steel web plate composite box girder sectional schematic diagram that the utility model top, base plate adopt steel-concrete combined structure.
Figure 10 is the horizontal assembled corrugated steel web plate composite box girder general illustration that the utility model top, base plate adopt steel-concrete combined structure.
Figure 11 is structure facade, the floor map that the utility model pre-embedded steel slab and wet seam are welded to connect.
Figure 12 is the bolted structure facade of the utility model pre-embedded steel slab and wet seam, floor map.
In figure: 1, precast H-beam unit, 2, the wet seam of top board, 2-1, top board lower edge steel plate, 2-2, peg, 2-3, top board cast-in-situ concrete, 3, the wet seam of base plate, 3-1, base plate lower edge steel plate, 3-2, peg, 3-3, base plate cast-in-situ concrete, 4, abutment bent cap, 5 crossbeams, 5-1 end floor beam, 6, pier shaft, 7, bearing, 8, support, 9 embedded bars.
Detailed description of the invention
By reference to the accompanying drawings, provide embodiment of the present utility model as follows, but the utility model does not limit to following examples.
As shown in Figure 9: the horizontal assembled corrugated steel web plate composite box girder of a kind of limited bracket described in the present embodiment comprises multiple prefabricated i beam unit 1 and adjacent i beam unit 1 is connected to form to the crossbeam 5 of multispan continuous combined case beam.The horizontal assembled connection in multiple i beams unit 1, crossbeam 5 is longitudinally connected between adjacent two i beam unit 1.Described precast H-beam unit 1 is the prefabricated Wavelike steel webplate i beam of construction, adopt pre-tensioning system or post-tensioned construction, its structure and Specific construction step are shown in that " a kind of Wavelike steel webplate prestressed concrete i beam " that the applicant applied for (ZL201120098202.6).The top board of described two adjacent precast H-beam unit 1 and the horizontal connection of base plate can adopt the mode of wet joint concrete or wet joint concrete+steel plate.The method that adopts wet joint concrete to connect is exactly, when prefabricated construction i beam the unit 1, its top board edge of a wing and base plate edge of a wing transverse reinforcement are stretched out, then the 1 top board edge of a wing, two adjacent i beam unit and base plate edge of a wing transverse reinforcement are welded together, utilize the wet seam 2 of pouring template top board and the wet seam 3 of base plate, form single span box girder.Adopt wet joint concrete+steel plate mode to be connected with respectively top board lower edge steel plate 2-1 and base plate lower edge steel plate 3-1 in the lower surface of the wet seam 2 of top board and the wet seam 3 of base plate, and be evenly equipped with multiple peg 2-2 on top board lower edge steel plate 2-1 and base plate lower edge steel plate 3-1,3-2, its effect is to make concrete and steel plate connect into entirety.Described peg 2-2,3-2 and top board lower edge steel plate 2-1 and base plate lower edge steel plate 3-1 are welded into entirety.And precast H-beam unit 1 laterally connects these horizontally-spliced modes that is not limited to.
The Specific construction step of the construction method of above-mentioned horizontal assembled corrugated steel web plate composite box girder is as follows:
First, as shown in Fig. 1,2,7: adopt conventional construction method construction bridge pier and pier shaft 6, at the top of pier shaft 6 construction abutment bent cap 4, its effect is to support i beam unit 1.Pier shaft 6 tops do not need to arrange bent cap.At the upper end of pier shaft 6 erection support 7 or embedded bar 9, set up support 8 in bridge pier outside, support 8 can adopt steel pipe scaffold or shape steel bracket to set up.Precast H-beam unit 1 is lifted on the support 8 of abutment pier shaft 6.
Secondly, as shown in Fig. 3,4,9: the top board transverse joint 2 and the base plate transverse joint 3 that adopt conventional method to construct between two adjacent precast H-beam unit 1.Top board transverse joint 2, base plate seam 3 can adopt the mode of wet joint concrete or wet joint concrete+steel plate.The method that adopts wet joint concrete to connect is exactly; when prefabricated construction i beam the unit 1; its top board edge of a wing and base plate edge of a wing transverse reinforcement are stretched out; then the 1 top board edge of a wing, two adjacent i beam unit and base plate edge of a wing transverse reinforcement are welded together; utilize the wet seam 2 of pouring template top board and the wet seam 3 of base plate, form single span box girder; Adopt the mode of wet joint concrete+steel plate both will be connected with peg 2-2, the top board lower edge steel plate 2-1 of 3-2 is connected with bolt with base plate lower edge steel plate 3-1 or the mode that is welded to connect is fixed on the wet seam 2 of top board of adjacent two prefabricated Wavelike steel webplate i beam unit and base plate seam 3 positions (as shown in figure 10) of wetting.In the time of the wet seam 3 of construction base plate, base plate lower edge steel plate 3-1 and peg 3-1 are welded into entirety, be fixedly connected on the position, lower surface of the wet seam 3 of base plate of two adjacent precast H-beam unit 1, adopt pre-embedded bolt connect (as shown in figure 11) or be welded to connect (as shown in figure 12), form interim cross binding, and seam 3 support shutterings that wet using this base plate lower edge steel plate 3-1 as base plate are built the template of the wet joint concrete 3-3 of base plate, wet seam 3 transverse reinforcements of colligation base plate and longitudinal reinforcement, the bottom board joint concrete 3-3 that wets.Repeat the wet seam of description step construction top board, be welded into entirety by top board lower edge steel plate 2-1 and peg 2-2, be connected to the position, lower surface of the wet seam 2 of top board of two adjacent precast H-beam unit 1, adopt pre-embedded bolt connect (as shown in figure 11) or be welded to connect (as shown in figure 12), form interim cross binding, and seam 2 support shutterings that wet using this top board lower edge steel plate 2-1 as top board are built the template of the wet joint concrete 2-3 of top board, wet seam 2 transverse reinforcements of colligation top board and longitudinal reinforcement, the bottom board joint concrete 2-3 that wets.The top board wet seam 3 of seam 2, the base plate overall single span case beam of formation of construct that wets.
As shown in Figure 5,6: the crossbeam 5 of constructing between longitudinal two adjacent precast H-beam unit 1, connects into multi-span continuous box girder by each single span case beam finally.Crossbeam 5 can adopt on support and the cast-in-place entirety that forms of pier shaft 6, forms continuous rigid frame; Also can adopt prefabrication system construction, then adopt splicing or alternate manner and single span case beam to connect into entirety and form continuous beam on many supports or continuous rigid frame.Last striking 8, completes construction.

Claims (3)

1. the horizontal assembled corrugated steel web plate composite box girder of limited bracket, comprise multiple prefabricated i beam unit (1) and adjacent i beam unit is connected to form to the crossbeam (5) of multispan continuous combined case beam, it is characterized in that: the wet seam (2) of top board in described two adjacent precast H-beam unit (1) and the lower surface of the wet seam (3) of base plate are connected with respectively top board lower edge steel plate (2-1) and base plate lower edge steel plate (3-1), on described top board lower edge steel plate (2-1) and base plate lower edge steel plate (3-1), be provided with multiple pegs (2-2,3-2).
2. the horizontal assembled corrugated steel web plate composite box girder of limited bracket according to claim 1, is characterized in that: described precast H-beam unit (1) is the prefabricated Wavelike steel webplate i beam of construction.
3. the horizontal assembled corrugated steel web plate composite box girder of limited bracket according to claim 1, is characterized in that: described peg (2-2,3-2) and top board lower edge steel plate (2-1) and base plate lower edge steel plate (3-1) are for being welded to connect.
CN201420018313.5U 2014-01-13 2014-01-13 Transverse-assembly corrugated steel web combination box beam with few supports Active CN203795293U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711067A (en) * 2014-01-13 2014-04-09 河南省交通规划勘察设计院有限责任公司 Transversely assembled corrugated steel web combined box girder with small number of supports and construction method thereof
CN107386090A (en) * 2017-06-09 2017-11-24 中铁二院工程集团有限责任公司 The more chamber box girder with corrugated steel webs constructions of combined type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103711067A (en) * 2014-01-13 2014-04-09 河南省交通规划勘察设计院有限责任公司 Transversely assembled corrugated steel web combined box girder with small number of supports and construction method thereof
CN107386090A (en) * 2017-06-09 2017-11-24 中铁二院工程集团有限责任公司 The more chamber box girder with corrugated steel webs constructions of combined type

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C56 Change in the name or address of the patentee
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Address after: Longhai Road 450052 Henan city of Zhengzhou province No. 70

Patentee after: HENAN PROVINCIAL COMMUNICATIONS PLANNING & DESIGN INSTITUTE CO., LTD.

Address before: Longhai Road 450052 Henan city of Zhengzhou province No. 70

Patentee before: Henan Communications Planning Surver & Designing Institute Co., Ltd.