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Main beam applied for single-tower self-anchored suspension bridge

A technology of self-anchored suspension bridges and suspension bridges, which is applied in the direction of suspension bridges, bridges, bridge parts, etc., can solve the problems of building huge foundations, high cost, unfavorable environmental protection, etc., to solve the sudden change of stiffness, avoid stress concentration and knuckles, and economic benefits Considerable effect

Inactive Publication Date: 2007-11-28
HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bridges are built where the bearing capacity of the foundation is poor and there are navigational requirements across the river (river). If a cable-stayed bridge structure is used, the cost is high because the cable-stayed bridge needs a large span to balance the side spans; if the arch type is used For structural bridges, a non-thrust arch must also be used for balance with a larger side span. If a thrust arch is used, a huge foundation must be built, which is expensive and not conducive to environmental protection.

Method used

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  • Main beam applied for single-tower self-anchored suspension bridge
  • Main beam applied for single-tower self-anchored suspension bridge
  • Main beam applied for single-tower self-anchored suspension bridge

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0030]Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a general single-tower self-anchored suspension bridge includes a cable tower 2, a main cable 1, a main girder 3 and a suspender 4, and the middle part of the main cable 1 is supported on the cable tower 2, the two ends of the main cable 1 are fixed on the main beam 3, and the main beam 1 is suspended below the main cable 1 through the suspender 4. The main girder applied to the single-tower self-anchored suspension bridge of the present invention comprises a steel stiffened beam 31 positioned at the main span of the suspension bridge and a concrete stiffened beam 32 positioned at the side span and the anchor span, the steel stiffened beam 31 and the concrete The stiffening beam 32 is connected and transitioned through the steel-concrete joint 33 , the concrete stiffening beam 32 a...

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Abstract

The invention discloses a main beam for the self-anchored suspension bridge with single-tower, comprising steel stiffening beam located at the main suspension part of suspension bridge and concrete stiffening beam located at side-suspension part and anchor-suspension part. The steel stiffening beam is connected with the concrete stiffening beam by steel-concrete joint part. The concrete stiffening beam at the steel-concrete joint part is covered by bearing steel plate and the bearing steel plate is fixed with the steel stiffening beam at the steel-concrete joint part. The invention is provided with simple structure. It can not only satisfy the construction efficiency of self-anchored suspension bridge but also the force intensity. The economy is relatively higher.

Description

technical field [0001] The invention belongs to the field of bridge engineering, in particular to a main girder applied to a single-tower self-anchored suspension bridge. Background technique [0002] At present, bridges within the span range of 200-600m mostly use cable-stayed bridge structures and arch structures. With the advancement of technology, self-anchored suspension bridges have appeared in this field as a supplement. Bridges are built where the bearing capacity of the foundation is poor and there are navigational requirements across the river (river). If a cable-stayed bridge structure is used, the cost is high because the cable-stayed bridge needs a large span to balance the side spans; if the arch type is used For structural bridges, a non-thrust arch must also be used for balance with larger side spans. If a thrust arch is used, a huge foundation must be built, which is expensive and not conducive to environmental protection. In contrast, the self-anchored sus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D11/02E01D101/24E01D101/30
Inventor 胡建华向建军廖建宏张贵明蒲怀仁程丽娟
Owner HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD
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