CN212270640U - Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate - Google Patents
Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate Download PDFInfo
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- CN212270640U CN212270640U CN202020232439.8U CN202020232439U CN212270640U CN 212270640 U CN212270640 U CN 212270640U CN 202020232439 U CN202020232439 U CN 202020232439U CN 212270640 U CN212270640 U CN 212270640U
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Abstract
The utility model discloses an adopt corrugated steel plate as diaphragm plate's cable-stay bridge combination case roof beam, it includes concrete box type section roof beam and diaphragm plate, the diaphragm plate is corrugated steel plate, concrete box type section roof beam has the inner chamber, the diaphragm plate sets up in the inner chamber. The utility model discloses the cross slab that sets up in concrete box type cross-section roof beam is the wave form steel sheet, and the wave form steel sheet has advantages such as the dead weight is light, shear rigidity is big, stability is good, consequently the utility model discloses can effectively reduce the structure dead weight to avoid local fracture, improve structure atress performance, improve structure economic nature and durability, reduce engineering cost.
Description
Technical Field
The utility model belongs to the technical field of civil engineering, in particular to adopt corrugated steel plate as diaphragm's cable-stay bridge combination case roof beam.
Background
With the vigorous development of urban traffic, large-span and wide-width bridges are gradually increased. For a guyed concrete bridge, the main beam with the concrete box-shaped section has the remarkable advantages of strong capability of bearing positive and negative bending moments, high torsional rigidity, high section efficiency index, good stability and the like. In particular to a box-shaped section girder of a short tower cable-stayed bridge, which can adopt a cantilever construction scheme with mature technology. However, the inhaul cables are intensively anchored, so that the stress distribution in the concrete box girder is relatively complex, and particularly for a wide concrete box girder, the space effect is more obvious. In order to ensure that the transverse stress of the main beam is uniform, reduce the transverse bridge distortion of the structure, and uniformly transmit the cable force of the inhaul cable to the cross section of the box girder, the concrete box girder needs to be provided with a plurality of transverse partition plates to increase the transverse rigidity, and the transverse partition plates mainly bear the transverse bridge shear force.
However, the conventional diaphragm has the following defects:
the transverse partition plate is arranged, so that the longitudinal load of a main beam is increased, and the structure economy is reduced.
The wide box girder has the advantages that the longitudinal and transverse stress space effect is prominent, the stress of the diaphragm plate is complex, the stress concentration phenomenon easily occurs at the corner part, and the problem of local cracking easily occurs.
And thirdly, the transverse shrinkage of the wide concrete box girder is supported by the transverse partition plate, so that the risk of cracking of the top and bottom plates is caused, and the structural durability is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can effectively reduce the structure dead weight, avoid local fracture, improve structural performance, improve the adoption corrugated steel plate as the cable-stay bridge combination case roof beam of cross slab of structure economy and durability.
The purpose of the utility model is realized through the following technical measures: the cable-stayed bridge combined box girder comprises a concrete box-type section beam and a diaphragm plate, and is characterized in that the diaphragm plate is the corrugated steel plate, the concrete box-type section beam is provided with an inner cavity, and the diaphragm plate is arranged in the inner cavity.
The utility model discloses the cross slab that sets up in concrete box type cross-section roof beam is the wave form steel sheet, and the wave form steel sheet has advantages such as the dead weight is light, shear rigidity is big, stability is good, consequently the utility model discloses can effectively reduce the structure dead weight to avoid local fracture, improve structure atress performance, improve structure economic nature and durability, reduce engineering cost.
As an embodiment of the present invention, the vertical setting of the diaphragm plate and the parallel arrangement along the bridge direction are a plurality of.
As a preferred embodiment of the present invention, the diaphragm is a corrugated steel plate or a corrugated steel plate.
As a preferred embodiment of the present invention, the diaphragm plate is connected to the inner cavity wall of the concrete box-shaped cross-section beam through a connecting member.
As the preferred embodiment of the present invention, the connecting member is a welding nail connecting member, a perforated steel plate connecting member, a section steel connecting member or a combination thereof, or other connecting members with similar connecting functions.
The utility model discloses can be as required set up pipeline hole and manhole etc. on the cross slab.
As an improvement of the utility model, a plurality of pairs of corresponding stiffening ribs are arranged on the two surfaces of the diaphragm plate.
The diaphragm plate is connected with the top plate, the bottom plate or the web of the concrete box-shaped section beam, or is connected with two arbitrary types in the top plate, the bottom plate or the web, or is connected with the top plate, the bottom plate and the web.
Compared with the prior art, the utility model discloses the effect that is showing as follows has:
the utility model discloses the cross slab who sets up in concrete box type cross-section roof beam is the wave form steel sheet, and the wave form steel sheet dead weight is light, can reduce cable-stay bridge girder structure dead weight, reduces vertical load and earthquake effect to reduce engineering cost.
The corrugated steel plate is high in structural strength, good in self-stability, capable of avoiding the problem of local cracking of the concrete diaphragm plate and better in durability.
The axial rigidity of the wave-shaped steel plate is small, and the axial effect is small in resistance, so that the transverse partition plate is small in transverse prestress and transverse contraction resistance of the box girder, the transverse prestress efficiency is improved, the longitudinal cracking risk of the top plate and the bottom plate is reduced, and the structural performance is improved.
The utility model discloses a diaphragm passes through mill's processing, and the construction is assembled on the scene, and the site operation work load is few, can accelerate construction speed, improves the efficiency of construction.
Drawings
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
Fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a longitudinal elevation view of the present invention.
Detailed Description
As shown in figures 1 and 2, be the utility model relates to an adopt corrugated steel plate as diaphragm plate's cable-stay bridge combination box roof beam, it includes concrete box section roof beam and diaphragm plate, and concrete box section roof beam mainly comprises roof 1, bottom plate 2 and web 3, and the inside of concrete box section roof beam is a plurality of inner chambers through 3 intervals of web, and in every inner chamber, the vertical setting of diaphragm plate and along arranging side by side in the same direction as the bridge are a plurality of. The diaphragm plate is a corrugated steel plate 4, specifically a folded plate steel plate or a corrugated steel plate, and the size of the corrugated steel plate 4 can be determined according to the structural stress and stability requirements. The stay cable anchor block 6 is used for anchoring a stay cable. And the upper part of the concrete box-shaped section beam is provided with a prestressed steel beam 7 arranged along the transverse bridge direction.
The diaphragm plate is connected with the inner cavity wall of the concrete box-shaped section beam through the connecting piece, and in practical situations, the diaphragm plate can be connected with a top plate, a bottom plate or a web plate of the concrete box-shaped section beam, or connected with any two of the top plate, the bottom plate or the web plate, or connected with the top plate, the bottom plate and the web plate according to the stress requirement. The connecting piece can adopt a welding nail connecting piece, an open pore steel plate connecting piece, a section steel connecting piece or a combination form thereof and other connecting pieces with similar connecting functions.
The diaphragm plate can be provided with structures such as pipeline holes, manholes and the like according to requirements. In order to improve the strength of the diaphragm plate, a plurality of pairs of corresponding stiffening ribs are arranged on two plate surfaces of the diaphragm plate.
The embodiments of the present invention are not limited to the above, according to the above-mentioned contents of the present invention, according to the common technical knowledge and the conventional means in the field, without departing from the basic technical idea of the present invention, the present invention can also make other modifications, replacements or changes in various forms, all falling within the scope of the present invention.
Claims (8)
1. The cable-stayed bridge combined box girder comprises a concrete box-type section beam and a diaphragm plate, and is characterized in that the diaphragm plate is the corrugated steel plate, the concrete box-type section beam is provided with an inner cavity, and the diaphragm plate is arranged in the inner cavity.
2. The combined box girder of the cable-stayed bridge using the corrugated steel plate as the diaphragm plate according to claim 1, wherein: the diaphragm plates are vertically arranged and can be arranged in parallel along the bridge direction to form a plurality of diaphragm plates.
3. The combined box girder of the cable-stayed bridge using the corrugated steel plate as the diaphragm plate according to claim 2, wherein: the diaphragm is a corrugated steel plate or a corrugated steel plate.
4. The combined box girder of the cable-stayed bridge using the corrugated steel plate as the diaphragm plate according to claim 3, wherein: the diaphragm plate is connected with the inner cavity wall of the concrete box-shaped section beam through a connecting piece.
5. The combined box girder of the cable-stayed bridge adopting the corrugated steel plate as the diaphragm plate according to claim 4, characterized in that: the connecting piece adopts a welding nail connecting piece, a perforated steel plate connecting piece or a profile steel connecting piece.
6. The combined box girder of the cable-stayed bridge adopting the corrugated steel plate as the diaphragm plate according to claim 5, characterized in that: the diaphragm plate is provided with a pipeline hole and a manhole.
7. The combined box girder of the cable-stayed bridge adopting the corrugated steel plate as the diaphragm plate according to claim 6, characterized in that: a plurality of pairs of corresponding stiffening ribs are arranged on the two plate surfaces of the diaphragm plate.
8. The cable-stayed bridge combined box girder adopting the corrugated steel plate as the diaphragm plate according to any one of claims 1 to 7, characterized in that: the diaphragm plate is connected with a top plate, a bottom plate or a web plate of the concrete box-shaped section beam, or connected with any two of the top plate, the bottom plate or the web plate, or connected with the top plate, the bottom plate and the web plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020232439.8U CN212270640U (en) | 2020-02-28 | 2020-02-28 | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020232439.8U CN212270640U (en) | 2020-02-28 | 2020-02-28 | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate |
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| CN212270640U true CN212270640U (en) | 2021-01-01 |
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| CN202020232439.8U Active CN212270640U (en) | 2020-02-28 | 2020-02-28 | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305040A (en) * | 2020-02-28 | 2020-06-19 | 广东省交通规划设计研究院股份有限公司 | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate |
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2020
- 2020-02-28 CN CN202020232439.8U patent/CN212270640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305040A (en) * | 2020-02-28 | 2020-06-19 | 广东省交通规划设计研究院股份有限公司 | Cable-stayed bridge combined box girder adopting corrugated steel plate as diaphragm plate |
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Address after: No.146, huangbian North Road, Baiyun District, Guangzhou, Guangdong 510440 Patentee after: Guangdong transportation planning and Design Institute Group Co., Ltd Address before: No.22 Xinghua Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: Guangdong transportation planning and Design Institute Co., Ltd |