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Strengthening Method of Rigid Frame Bridge Using Reverse Suspension Bridge Structural System

A technology for rigid frame bridges and reverse suspension bridges, applied in bridge reinforcement, bridges, bridge construction, etc., can solve problems such as increased web cracking, prestress relaxation of rigid frame bridges, endangering bridge safety and performance, and achieves good reinforcement performance , improve the effect of mid-span and downward deflection, and improve the value of project promotion

Active Publication Date: 2017-03-01
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Concrete rigid frame bridges have the advantages of low unit cost and convenient construction, and occupy an important position in the construction of medium-span bridges in my country. The deflection problem will become more and more prominent, and the resulting prestress relaxation and web cracking of rigid frame bridges will seriously endanger the safety and performance of the bridge.

Method used

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  • Strengthening Method of Rigid Frame Bridge Using Reverse Suspension Bridge Structural System
  • Strengthening Method of Rigid Frame Bridge Using Reverse Suspension Bridge Structural System
  • Strengthening Method of Rigid Frame Bridge Using Reverse Suspension Bridge Structural System

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Embodiment Construction

[0037] 1. The establishment of a rigid frame bridge reinforcement method using the reverse suspension bridge structure system

[0038] 1. Basic principles

[0039] Through the introduction of the anti-suspension bridge structure system, the stress system of the rigid frame bridge is changed, the unloading effect of the original rigid frame bridge stress system occurs, and the long-term deflection of the rigid frame bridge due to concrete shrinkage and creep is restrained.

[0040] 2. Specific steps

[0041] Such as figure 1 As shown, a transverse steel girder 1 and a plurality of steel claw-shaped support structures 2 with different heights are installed on the lower flange of the rigid frame bridge, and the lower end of the support structure is a cable steering fixing device 3 ( image 3 ); pouring inclined columns 5 and beams 6 at 4 positions of the pier top diaphragm of the rigid frame bridge, and the inclined columns 5 and cross beams 6 are connected with the rigid frame...

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Abstract

The invention discloses a rigid frame bridge reinforcement method by adopting a reverse suspension bridge structure system. By introducing the reverse suspension bridge structure system, the applied force of the rigid frame bridge is changed; the applied force system of the original rigid frame bridge has unloading effect; and the rigid frame bridge is inhibited from long-term deflection due to the shrinkage and creep of the concrete. By adopting the rigid frame bridge reinforcement method, the problem of deflection of the rigid frame bridge is solved; and bearing ability and the structure durability of the rigid frame bridge can be improved; and the method provided herein has good engineering popularization value.

Description

technical field [0001] The invention belongs to the technical field of bridge reinforcement in bridge and culvert engineering in the transportation industry, and in particular relates to a rigid frame bridge reinforcement method using a reverse suspension bridge structure system. Background technique [0002] Concrete rigid frame bridges have the advantages of low unit cost and convenient construction, and occupy an important position in the construction of medium-span bridges in my country. The deflection problem will become more and more prominent, and the resulting prestress relaxation of rigid frame bridges and aggravated web cracking will seriously endanger the safety and performance of the bridge. The anti-suspension bridge system has the characteristics of reasonable structural stress and large bearing capacity, and has strong competitiveness in the field of medium-span bridge construction of 100-300m. Contents of the invention [0003] The technical problem to be s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00
Inventor 陈齐风高建明郝天之刘世建徐赵东邱波罗月静杨雨厚张峰
Owner GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
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