CN114687273A - Bridge structure with U-shaped beam and construction method thereof - Google Patents
Bridge structure with U-shaped beam and construction method thereof Download PDFInfo
- Publication number
- CN114687273A CN114687273A CN202210177991.5A CN202210177991A CN114687273A CN 114687273 A CN114687273 A CN 114687273A CN 202210177991 A CN202210177991 A CN 202210177991A CN 114687273 A CN114687273 A CN 114687273A
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- shaped beam
- shaped
- bridge
- pier
- beams
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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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
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- E01D19/04—Bearings; Hinges
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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
Abstract
The invention discloses a bridge structure with a U-shaped beam and a construction method thereof, and belongs to the technical field of bridge engineering. The bridge structure with the U-shaped beam comprises a bridge pier, the U-shaped beam, a positioning assembly and a cover plate assembly; the U-shaped beam is arranged on the bridge pier; the positioning piece is arranged between the pier and the U-shaped beam and used for connecting the U-shaped beam with the pier; the cover plate assembly is arranged on the U-shaped beam and fixedly connected with the U-shaped beam. The bridge structure with the U-shaped beam can effectively reduce the dead weight of the main beam, reduce the consumption of materials and save the construction cost, and because the mass of the main beam is reduced, the local cracking condition of the main beam generated near a hoisting point can be avoided in the hoisting process, meanwhile, the requirements on construction machinery such as a crane are reduced, and the construction convenience is enhanced.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a bridge structure with a U-shaped beam and a construction method thereof.
Background
With the development of social economy, traffic engineering construction enters a rapid development period, the demand on bridges is increasingly greater in the construction process, and the requirements on the economy and the construction of the bridges are also increasingly increased. The integrated box girder has good integrity, large bearing capacity and strong torsion resistance, and is widely applied to bridge engineering. The main construction methods of the integrated box girder comprise a support cast-in-place method, a prefabricated section assembling method and a prefabricated integral hoisting method, but the three methods have many defects.
When the support is used for cast-in-place construction, a large number of supports are needed, and the requirement on a constructed template is very high; when the prefabricated sections are used for splicing, more construction joints exist, and the integrity is poor; when the prefabricated integral hoisting is used, the self weight of the box girder is too large, the requirement on hoisting equipment can be very high, 900t of hoisting machinery is needed once a long-span high-speed railway bridge is spanned, cracks are easily generated near hoisting points in the hoisting process, and the service performance of the girder is reduced. In addition, the integrated box-type beam consumes a lot of materials, so that the construction cost is increased, and the economical efficiency of construction is not facilitated.
Therefore, it is necessary to develop a bridge structure and a construction method thereof that are lightweight and economical and can reduce the requirements for construction machines such as bridge cranes, and particularly, when the crane capacity is limited, it is necessary to develop a bridge structure and a construction method thereof.
Disclosure of Invention
The invention aims to provide a bridge structure with a U-shaped beam and a construction method thereof, and solves the technical problems of more materials, heavy self weight, high hoisting requirement and high manufacturing cost caused by the adoption of an integral box beam in the conventional bridge structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bridge construction having U-shaped beams comprising:
a bridge pier;
the U-shaped beam is arranged on the bridge pier;
the positioning piece is arranged between the pier and the U-shaped beam and used for connecting the U-shaped beam with the pier;
and the cover plate assembly is arranged on the U-shaped beam and is fixedly connected with the U-shaped beam.
Furthermore, a limiting block is arranged on the pier and used for limiting the displacement of the U-shaped beam along the transverse bridge direction.
Furthermore, the bridge structure with the U-shaped beams comprises two U-shaped beams, and the two U-shaped beams are respectively arranged on two sides of the limiting block along the transverse bridge direction;
u type roof beam includes bottom plate, interior web and outer web, the bottom plate is connected interior web with outer web, interior web is located and is close to one side of stopper, outer web is located and keeps away from one side of stopper.
Further, the positioning assembly comprises a vertical support and a lateral support;
the vertical support is arranged between the pier and the bottom plate and used for connecting the pier and the U-shaped beam;
the lateral support is arranged between the limiting block and the inner web plate and used for connecting the limiting block with the U-shaped beam.
Further, the cover plate assembly includes a center plate and an end plate;
the central plate is fixed on the inner webs of two adjacent U-shaped beams along the transverse bridge direction;
the end plates are respectively arranged on the single U-shaped beams.
Furthermore, the inner web plate is provided with a flange connecting part, and the end plate is fixed on the flange connecting part through an anchor head.
Furthermore, a concrete cast-in-place layer is arranged on the cover plate assembly, and the cover plate assembly and the U-shaped beam are connected into a whole through the concrete cast-in-place layer.
A construction method of a bridge structure with U-shaped beams comprises the following steps:
s1, constructing piers and prefabricating U-shaped beams and cover plate assemblies;
s2, hoisting the U-shaped beam to the pier, and connecting the U-shaped beam through a positioning assembly;
and S3, laying a cover plate assembly on the U-shaped beam.
Further, the step S1 further includes the steps of:
s11, constructing the limiting block on the pier;
s12, prefabricating the U-shaped beam;
and S13, prefabricating the cover plate assembly.
Further, the step S2 further includes the following steps:
s21, mounting a vertical support on the pier;
s22, installing temporary supports on the piers;
s23, mounting a lateral support on the limiting block;
s24, hoisting the two U-shaped beams to the pier, and connecting the U-shaped beams with the vertical support, the temporary support and the limiting block.
Further, the step S3 further includes the following steps:
s31, fixing the central plate on the inner webs of two adjacent U-shaped beams along the transverse bridge direction;
s32, respectively arranging end plates on the single U-shaped beams;
s33, laying a concrete cast-in-place layer on the cover plate component;
and S34, removing the temporary support.
The invention has the beneficial effects that:
the bridge structure with the U-shaped beam can effectively reduce the dead weight of the girder, reduce the consumption of materials and save the construction cost, and because the mass of the girder is reduced, the local cracking condition of the girder generated near a hoisting point can be avoided in the hoisting process, meanwhile, the requirements on construction machinery such as a crane are reduced, and the convenience of construction is enhanced.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
FIG. 2 is a schematic view of a construction process according to a preferred embodiment of the present invention.
In the figure:
1-bridge pier; 2-U-shaped beam; 21-a bottom plate; 22-an inner web; 221-flange connection; 23-an outer web; 31-a vertical support; 32-lateral support; 41-center plate; 42-end plate; 5-a limiting block; 6-anchor head; 7-a concrete cast-in-situ layer; 8-temporary support.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, the present embodiment provides a bridge structure having a U-shaped girder 2, including a bridge pier 1, a U-shaped girder 2, a positioning assembly, and a cover plate assembly; the U-shaped beam 2 is arranged on the bridge pier 1; the positioning piece is arranged between the pier 1 and the U-shaped beam 2 and used for connecting the U-shaped beam 2 with the pier 1; the cover plate assembly is arranged on the U-shaped beam 2 and is fixedly connected with the U-shaped beam 2. The bridge structure with the U-shaped beam 2 can effectively reduce the dead weight of the main beam, reduce the consumption of materials and save the construction cost, and because the mass of the main beam is reduced, the local cracking condition of the main beam generated near a hoisting point can be avoided in the hoisting process, meanwhile, the requirements on construction machinery such as a crane are reduced, and the convenience of construction is enhanced.
In this embodiment, be equipped with stopper 5 on pier 1, stopper 5 is used for restricting the displacement along the horizontal bridge of U type roof beam 2 to, and the lateral displacement of the roof beam body is too big when avoiding the earthquake to take place even produces and falls the roof beam.
In this embodiment, the bridge structure with the U-shaped beams 2 includes two U-shaped beams 2, and the two U-shaped beams 2 are respectively disposed on two sides of the limiting block 5 along the transverse bridge direction; the U-shaped beam 2 comprises a bottom plate 21, an inner web 22 and an outer web 23, wherein the bottom plate 21 is connected with the inner web 22 and the outer web 23, the inner web 22 is located on one side close to the limiting block 5, and the outer web 23 is located on one side far away from the limiting block 5. The arrangement of two U type roof beams 2 can increase the horizontal bridge of bridge to the width, and can be more even transmit the bridge floor load for pier 1.
In this embodiment, the positioning assembly comprises a vertical support 31 and a lateral support 32; the vertical support 31 is arranged between the pier 1 and the bottom plate 21 and is used for connecting the pier 1 and the U-shaped beam 2; the lateral support 32 is arranged between the limiting block 5 and the inner web 22 and is used for connecting the limiting block 5 and the U-shaped beam 2. The arrangement of the side supports 32 can limit the transverse bridge displacement of the U-shaped beam 2, and the safety of the bridge is improved.
In the present embodiment, the cover plate assembly includes a center plate 41 and an end plate 42; the central plate 41 is fixed on the inner webs 22 of two adjacent U-shaped beams 2 along the transverse bridge direction; the end plates 42 are respectively provided on the single-piece U-shaped beams 2. The center plate 41 and end plates 42 provide structural support and a foundation for the laying of the deck.
In this embodiment, the flange connection portion 221 is disposed on the inner web 22, and the end plate 42 is fixed to the flange connection portion 221 through the anchor head 6, so that the firmness of connection between the end plate 42 and the U-shaped beam 2 is enhanced.
In this embodiment, be equipped with cast-in-place layer of concrete 7 on the apron subassembly, apron subassembly and U type roof beam 2 link as an organic whole through cast-in-place layer of concrete 7, have strengthened the wholeness of bridge.
As shown in fig. 2, a construction method of a bridge structure having a U-shaped beam 2 includes the steps of:
s1, constructing the pier 1 and prefabricating the U-shaped beam 2 and the cover plate assembly;
s2, hoisting the U-shaped beam 2 to the pier 1, and connecting the U-shaped beam 2 through a positioning assembly;
and S3, laying the cover plate assembly on the U-shaped beam 2.
In this embodiment, step S1 further includes the following steps:
s11, constructing a limiting block 5 on the pier 1;
s12, prefabricating the U-shaped beam 2;
and S13, prefabricating the cover plate assembly.
In this embodiment, step S2 further includes the following steps:
s21, mounting the vertical support 31 on the pier 1;
s22, installing a temporary support 8 on the pier 1, wherein the temporary support 8 is a wooden temporary support 8;
s23, mounting the lateral support 32 on the limiting block 5;
and S24, hoisting the two U-shaped beams 2 to the pier 1, and connecting the two U-shaped beams with the vertical support 31, the temporary support 8 and the limiting block 5.
In this embodiment, step S3 further includes the following steps:
s31, fixing the central plate 41 on the inner webs 22 of the two adjacent U-shaped beams 2 along the transverse bridge direction;
s32, respectively arranging the end plates 42 on the single U-shaped beams 2;
s33, laying a concrete cast-in-place layer 7 on the cover plate component;
and S34, removing the temporary support 8.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way, and may be optimized according to the actual engineering. Any modification, equivalent change and decoration of the above embodiments according to the technical principle of the present invention are still within the scope of the technical solution of the present invention, unless the contents depart from the technical solution of the present invention.
Claims (10)
1. A bridge construction having U-beams, comprising:
a bridge pier;
the U-shaped beam is arranged on the bridge pier;
the positioning piece is arranged between the pier and the U-shaped beam and used for connecting the U-shaped beam with the pier;
and the cover plate assembly is arranged on the U-shaped beam and is fixedly connected with the U-shaped beam.
2. The bridge structure with the U-shaped beam according to claim 1, wherein a stopper is provided on the pier, and the stopper is used for limiting the displacement of the U-shaped beam in the transverse bridge direction.
3. The bridge structure with U-shaped beams according to claim 2, wherein the bridge structure with U-shaped beams comprises two U-shaped beams, and the two U-shaped beams are respectively arranged at two sides of the limiting block along the transverse bridge direction;
u type roof beam includes bottom plate, interior web and outer web, the bottom plate is connected interior web with outer web, interior web is located and is close to one side of stopper, outer web is located and keeps away from one side of stopper.
4. A bridge construction with U-beams according to claim 3, characterised in that said positioning assembly comprises vertical supports and lateral supports;
the vertical support is arranged between the pier and the bottom plate and used for connecting the pier and the U-shaped beam;
the lateral support is arranged between the limiting block and the inner web plate and used for connecting the limiting block with the U-shaped beam.
5. A bridge construction having U-beams according to claim 4, wherein said cover plate assembly comprises a central plate and end plates;
the central plate is fixed on the inner webs of two adjacent U-shaped beams along the transverse bridge direction;
the end plates are respectively arranged on the single U-shaped beams.
6. A bridge construction with U-shaped beams according to claim 5, wherein the inner web is provided with flange connection portions, and the end plates are fixed to the flange connection portions by anchor heads.
7. A bridge construction having a U-shaped beam according to any one of claims 1 to 6, wherein a cast-in-place concrete layer is provided on the cover plate assembly, and the cover plate assembly and the U-shaped beam are integrally connected through the cast-in-place concrete layer.
8. A construction method of a bridge construction having U-shaped beams according to any one of claims 1 to 7, comprising the steps of:
s1, constructing piers and prefabricating U-shaped beams and cover plate assemblies;
s2, hoisting the U-shaped beam to the pier, and connecting the U-shaped beam through a positioning assembly;
and S3, laying a cover plate assembly on the U-shaped beam.
9. A construction method of a bridge structure having a U-shaped beam according to claim 8, wherein the step S1 further comprises the steps of:
s11, constructing the limiting block on the pier;
s12, prefabricating the U-shaped beam;
and S13, prefabricating the cover plate assembly.
10. A construction method of a bridge structure having a U-shaped beam according to claim 8, wherein the step S2 further comprises the steps of:
s21, mounting a vertical support on the pier;
s22, installing temporary supports on the piers;
s23, mounting a lateral support on the limiting block;
s24, hoisting the two U-shaped beams to the bridge pier, and connecting the U-shaped beams with the vertical support, the temporary support and the limiting block;
the step S3 further includes the steps of:
s31, fixing the central plate on the inner webs of two adjacent U-shaped beams along the transverse bridge direction;
s32, respectively arranging end plates on the single U-shaped beams;
s33, paving a concrete cast-in-place layer on the cover plate assembly;
and S34, removing the temporary support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177991.5A CN114687273A (en) | 2022-02-25 | 2022-02-25 | Bridge structure with U-shaped beam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177991.5A CN114687273A (en) | 2022-02-25 | 2022-02-25 | Bridge structure with U-shaped beam and construction method thereof |
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| Publication Number | Publication Date |
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| CN114687273A true CN114687273A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210177991.5A Pending CN114687273A (en) | 2022-02-25 | 2022-02-25 | Bridge structure with U-shaped beam and construction method thereof |
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| JP2014001579A (en) * | 2012-06-20 | 2014-01-09 | Sumitomo Mitsui Construction Co Ltd | Construction method of box-girder bridge |
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| CN110924287A (en) * | 2019-09-24 | 2020-03-27 | 中铁二局第三工程有限公司 | Semi-fabricated large-span combined box girder and construction method thereof |
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-
2022
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