CN220335680U - Combined beam bridge - Google Patents
Combined beam bridge Download PDFInfo
- Publication number
- CN220335680U CN220335680U CN202320443737.5U CN202320443737U CN220335680U CN 220335680 U CN220335680 U CN 220335680U CN 202320443737 U CN202320443737 U CN 202320443737U CN 220335680 U CN220335680 U CN 220335680U
- Authority
- CN
- China
- Prior art keywords
- steel
- bridge
- concrete
- composite
- nails
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 11
- 239000011178 precast concrete Substances 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 8
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims 1
- 238000007569 slipcasting Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 7
- 238000009417 prefabrication Methods 0.000 abstract description 4
- 239000011513 prestressed concrete Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a combined beam bridge, and relates to the technical field of bridge engineering. The composite girder bridge comprises: the girder comprises a plurality of foundations and piers, and is erected on the piers, wherein the girders are steel concrete composite girders, and the composite girders consist of transverse full-width integral precast prestressed concrete bridge decks and stiffening rib-free steel girders. After the construction process of the pier foundation is finished, the steel beam is firstly implemented through a hoisting or pushing process, then the precast concrete bridge deck is hoisted, high-strength mortar is poured between the bridge deck and the steel beam, and then transverse wet joint pouring is carried out. The utility model is suitable for rapid prefabrication and assembly construction.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, and relates to a combined beam bridge.
Background
The combined beam bridge can fully exert the mechanical properties of two materials of steel and concrete, and can solve the problems of easy fatigue and poor durability of a steel bridge deck system; meanwhile, the combined beam bridge adopts a prefabrication assembly technology, so that the site construction progress can be accelerated, the site construction pollution can be reduced, and the realization of a double-carbon target can be promoted; moreover, the combined beam bridge has low economical efficiency and can save a great deal of social resources. Therefore, the composite girder bridge is increasingly favored by constructors in the construction of infrastructure in China in recent years. The traditional combined beam bridge deck 104 adopts block prefabrication, has a plurality of on-site wet joint interfaces, and is difficult to ensure the construction quality; another type of transverse full width integral prefabrication requires the reservation of larger rectangular group nail holes 211, which have poor interface durability and may even lead to weakened sections. In addition, the steel beam 103 of the traditional composite beam has more stiffening ribs, so that the on-site and later-period operation maintenance workload is greatly increased, and the durability of the structure is also greatly adversely affected. For this reason, a new type of composite girder bridge is required.
Disclosure of Invention
The utility model aims to solve the main problems of durability, quality and section weakening of wet joints or group nail hole interfaces in the prior art and provides a combined beam bridge.
The utility model solves the technical problems by the following technical scheme:
a composite beam bridge comprises a foundation, a pier and a steel concrete composite beam. The composite beam bridge deck adopts a transverse full-width precast concrete slab, the precast slab is provided with a longitudinal through length reserved groove, and high-strength mortar is poured through a reserved pouring hole to be connected with the steel beam.
The combination Liang Gangliang adopts at least two steel longitudinal beams without longitudinal and transverse stiffening ribs, steel cross beams are arranged between the steel longitudinal beams at intervals of about 6m, and the steel cross beams are not connected with the concrete bridge deck.
The prefabricated bridge deck boards are transversely prestressed and are connected through steel bars and UHPC transverse seams.
And 1 grouting hole is formed in the middle of each longitudinal through length reserved groove of the combined beam bridge deck, and 2 grouting holes are formed in two ends of each longitudinal through length reserved groove.
The welding nails for connection between steel and concrete are long and short, and the welding nails in the grouting holes and the grout-raising holes are long nails and the welding nails in other positions are short nails.
The utility model has the positive progress effects that: the combined beam bridge adopts a novel concrete slab and steel beam connection technology, overcomes the problems of poor durability and weakened section of the group nail preformed holes, and enhances the structural stress performance; the prefabricated bridge decks are connected through UHPC transverse joints, so that the construction quality difficulty of a wet joint interface is reduced, and the structural durability is improved; the grouting holes are formed in the middle of the bridge deck through groove and are cast through a special device, the grouting holes are formed in the two ends of the bridge deck through groove, and the grouting holes are plugged after mortar flows out from the grouting holes, so that the compactness of the mortar casting is guaranteed; the bridge deck boards are transversely provided with prestress, so that the durability of the structure can be effectively improved; the bridge deck transverse seam is firstly constructed to span the middle section, and then the pier top section is constructed, so that the tensile stress of the pier top bridge deck can be greatly reduced, and the stress performance of the structure is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional deck slab group nail hole structure;
FIG. 2 is a schematic cross-sectional view of a main beam of the present utility model;
FIG. 3 is a schematic plan view of the deck slab of the present utility model;
FIG. 4 is an elevational schematic of the deck slab of the present utility model;
fig. 5 is a schematic view of an embodiment composite beam construction process.
Detailed Description
The novel composite girder provided by the utility model is further described in detail below with reference to the accompanying drawings and specific examples. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
Referring to fig. 2 to 4, the present embodiment is a composite girder bridge comprising a foundation 101, a pier 102, and steel concrete composite girders 103, 104, 105. The steel concrete composite beam bridge deck 104 adopts a transverse full-width precast concrete slab, the precast concrete slab is provided with a longitudinal through length reserved groove 201, and high-strength mortar 204 is poured through reserved holes 202 to be connected with the steel beam 103.
The steel beams 103 and 105 adopt at least two steel stringers 103 without longitudinal and transverse stiffening ribs, a steel beam 105 is arranged between the steel stringers at intervals of about 6m, and the steel beam 105 is not connected with the concrete bridge deck 104.
The prefabricated bridge decks are provided with transverse prestress 303, and the prefabricated bridge decks are connected by UHPC transverse slits 207.
Each longitudinal through length reserved groove 201 of the combined beam bridge deck 104 is provided with 1 grouting hole 205 in the middle, and two ends of each longitudinal through length reserved groove are provided with 2 grouting holes 206.
The welding nails for connection between the steel and the concrete are long and short, wherein the welding nails in the grouting holes 205 and the grouting holes 206 are long nails 301, and the welding nails at other positions are short nails 302.
The construction process of the combined beam bridge comprises the following steps:
step 1, two side piers 1021 are built, a plurality of middle piers 1022 are built between the two side piers, and a plurality of temporary piers or no temporary piers are arranged according to stress and process requirements.
And 2, processing the steel-concrete composite beam section in a factory, and installing the steel beam 103 in place on site through a hoisting or pushing construction process.
And 3, stretching the precast concrete deck 104, storing for more than 6 months, and hoisting the precast concrete deck after the steel beam is in place.
And 4, pouring high-strength mortar 204 through the reserved holes, completing the connection of the precast slabs 104 and the steel beams 103, and then completing the connection of the bridge deck transverse joints 207.
In the construction process step 4, the high-strength mortar 204 is poured from the grouting hole 206 through a special device, and the grouting hole is plugged after the mortar flows out from the grouting hole 206. In addition, in step 4, the bridge deck slab transverse seam is cast across the middle section 1041 portion and then the pier top section 1042 portion.
The combined beam bridge adopts a novel concrete slab and steel beam connection technology, overcomes the problems of poor durability and weakened section of the group nail preformed holes, and enhances the structural stress performance; the prefabricated bridge decks are connected through UHPC transverse joints, so that the construction quality difficulty of a wet joint interface is reduced, and the structural durability is improved; the bridge deck boards are transversely provided with prestress, so that the durability of the structure can be effectively improved; the bridge deck transverse seam is firstly constructed to span the middle section, and then the pier top section is constructed, so that the tensile stress of the pier top bridge deck can be greatly reduced, and the stress performance of the structure is improved.
The key point of the utility model is that the high-strength mortar cast by combining steel and concrete cannot guarantee the compactness of the high-strength mortar in the longitudinal through groove if the conventional method is adopted, and the expected purpose cannot be achieved. In order to overcome the problem, the utility model sets the pouring hole in the middle of the through groove, and pours through the special device, sets the slurry-overflowing hole at both ends, and plugs the slurry-overflowing hole after the slurry-overflowing hole has the slurry to flow out, so that the high-strength slurry compactness is ensured.
The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.
Claims (5)
1. The utility model provides a combination beam bridge, includes basis, pier and steel concrete composite beam, its characterized in that, combination beam bridge includes the panel, and the panel adopts horizontal full width whole precast concrete board, and the longitudinal through long reservation groove is established to the precast slab, through reserving slip casting hole pouring high strength mortar and steel concrete composite beam connection.
2. The composite girder bridge of claim 1, wherein the steel concrete composite girder comprises at least two steel stringers without longitudinal and transverse stiffening ribs, steel cross beams are arranged between the steel stringers at equal intervals, and the steel cross beams are not connected with the concrete bridge deck.
3. A composite girder bridge according to claim 1, wherein transverse prestress is provided in the prefabricated bridge deck, and the prefabricated bridge deck is connected by steel bars and UHPC transverse seams.
4. The composite girder bridge according to claim 1, wherein 1 grouting hole is formed in the middle of a longitudinal through length reserved groove of each prefabricated bridge deck of the composite girder, and 2 grout outlet holes are formed in two ends of each longitudinal through length reserved groove.
5. The composite girder bridge of claim 1, wherein the welding nails for connection between the steel and the concrete are long and short, and wherein the welding nails in the grouting holes and the grout-raising holes are long nails and the nails Kong Waihan are short nails.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202320443737.5U CN220335680U (en) | 2023-03-09 | 2023-03-09 | Combined beam bridge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202320443737.5U CN220335680U (en) | 2023-03-09 | 2023-03-09 | Combined beam bridge |
Publications (1)
Publication Number | Publication Date |
---|---|
CN220335680U true CN220335680U (en) | 2024-01-12 |
Family
ID=89458763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202320443737.5U Active CN220335680U (en) | 2023-03-09 | 2023-03-09 | Combined beam bridge |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN220335680U (en) |
-
2023
- 2023-03-09 CN CN202320443737.5U patent/CN220335680U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103758023B (en) | Prestressed concrete and steel truss mixed continuous rigid frame bridge and construction method thereof | |
CN108978434B (en) | Bracket-free industrialized construction method of steel-concrete combined continuous box girder bridge | |
CN204185755U (en) | A kind of Wavelike steel webplate post-stressed concrete T beam | |
CN110792164B (en) | Transverse assembling device and method for assembled shear wall | |
CN109914216B (en) | Assembled large-span ultra-high-performance concrete box girder combined node and connecting method thereof | |
CN110924287A (en) | Semi-fabricated large-span combined box girder and construction method thereof | |
CN110846996A (en) | Construction method of continuous composite beam bridge and continuous composite beam bridge | |
CN108914778A (en) | The method that the concrete slab of a kind of pair of combination beam top flange applies precompression | |
CN113653235A (en) | Laminated slab, connecting structure of laminated slab and combination beam and construction method | |
CN110700103A (en) | Construction method of continuous composite beam | |
CN109610311A (en) | Prefabrication and assembly construction L-type floorings seam construction and implementation method | |
CN211522899U (en) | Long-span steel-concrete composite beam convenient to erect by bridge girder erection machine | |
CN110331649B (en) | Transverse joint system for prefabricated steel-concrete composite beam | |
CN208039577U (en) | Half prefabricated prestressed concrete floor slab of figure of eight steel bar girder | |
CN109972512B (en) | Cast-in-place construction method of profiled steel sheet-concrete combined bridge deck slab | |
CN109958050B (en) | Improved light modular steel-concrete combined small box girder simply-supported bridge | |
CN208362941U (en) | One kind reinforcing the old hollow slab bridge construction of single hole by real abdomen Bars In Poured Concrete Slab | |
CN201381470Y (en) | Assembled variable cross-section composite continuous bridge | |
CN220335680U (en) | Combined beam bridge | |
CN116005548A (en) | Segmental prefabricated assembled steel concrete composite beam and construction method thereof | |
CN216338993U (en) | Longitudinal joint for steel-UHPC (ultra high performance concrete) assembled pi-shaped combination beam | |
CN113073557B (en) | Method for mounting concrete bridge deck of steel-concrete combined continuous steel truss bridge | |
CN108411801A (en) | One kind reinforcing the old hollow slab bridge construction of single hole and construction method by real abdomen Bars In Poured Concrete Slab | |
CN116219867A (en) | Combined beam bridge and construction process thereof | |
CN211621164U (en) | Semi-fabricated large-span combined box girder |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |