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A performance adjustment device and construction method for large cantilever concrete flange of main girder

A technology of adjusting device and concrete, which is applied in the direction of bridge construction, building, bridge, etc., to ensure the safety and improve the working condition.

Active Publication Date: 2019-04-16
ANHUI TRANSPORTATION HLDG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As for making fundamental changes to it, there have been no other public reports at home and abroad so far.

Method used

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  • A performance adjustment device and construction method for large cantilever concrete flange of main girder
  • A performance adjustment device and construction method for large cantilever concrete flange of main girder
  • A performance adjustment device and construction method for large cantilever concrete flange of main girder

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The 35m-span steel plate composite continuous girder bridge adopts a steel plate composite girder 1 with a full width of 16.25m and double main girders. The 3.9m large cantilever concrete flange 2 is affected by the shear lag of the beam body and the negative transverse bending moment, and there is a problem of cracking under force.

[0029] see figure 1 and figure 2 , it is designed to install a performance adjustment device 3 at the end of the large cantilever concrete flange 2 to form a support for the flange. The performance adjustment device 3 consists of a concrete bead 4 and an internal prestressing system 5 .

[0030] see image 3 , The prestressing system 5 includes a prestressing pipeline 6 , a prestressing steel beam 7 , a prestressing anchor 8 , grouting inside the pipeline 9 , and anchoring concrete 10 . The prestressed anchor 8 includes an anchor seat 11 and an anchor plate 12 .

[0031] see image 3 , before the concrete bead 4 is poured, the pre-em...

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Abstract

The invention relates to a performance adjusting device for a girder large cantilever concrete flange and a construction method thereof. The performance adjusting device is arranged at the end of the girder large cantilever concrete flange forming a bridge main body and comprises a concrete pressing bar and a pre-stress system, the concrete pressing bar is mounted at the end of the girder large cantilever concrete flange, and the pre-stress system is mounted in the concrete pressing bar and used for supply pressure to the concrete pressing bar and the end of the flange. Compared with the prior art, according to the performance adjusting device for the girder large cantilever concrete flange and the construction method thereof, the traditional mode of structural design is changed, the working state of the girder large cantilever concrete flange is improved, structural safety and durability are ensured, and structural light design is supported.

Description

technical field [0001] The invention relates to the structural structure of the main girder of a bridge, in particular to a performance adjustment device for the large cantilever concrete flange of the main girder and a construction method thereof. Background technique [0002] At present, adopting a structural point of view and an industrialized model to implement the construction of less soil, no soil, high efficiency, and low-cost projects at the level of scale and serialization is becoming the development direction of my country's green road construction. [0003] Among them, the lightweight technology of bridge girder structure is an important part of promoting the industrial construction of bridges. After years of exploration, the main girder with less web and large cantilever concrete flange has been greatly developed and achieved good construction results. [0004] However, due to deficiencies in the calculation model and structural structure, the main girder with l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00E01D19/12E01D101/28
CPCE01D19/00E01D19/125E01D2101/28
Inventor 胡可杨晓光马祖桥王凯王胜斌梅应华吴平平梁长海吴志刚唐国喜窦巍魏民夏伟石雪飞阮欣刘志权
Owner ANHUI TRANSPORTATION HLDG GRP CO LTD
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