Accurate positioning method of sliding of full-support frame steel box girder

A precise positioning, steel box girder technology, applied in the erection/assembly of bridges, bridges, bridge construction, etc., can solve the problems of low construction efficiency, complicated procedures, delayed construction period, etc., to reduce equipment investment, simple procedures, and cost saving. Effect

Active Publication Date: 2010-06-16
CHINA COMM ROAD & BRIDGE NORTH CHINA ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned installation method has complex procedures in the specific installation and construction, it is difficult to achieve accurate positioning, it is difficult to ensure the construction quality, and it requires a lot of equipment, and the construction efficiency is low, which often leads to delays in the construction period

Method used

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  • Accurate positioning method of sliding of full-support frame steel box girder
  • Accurate positioning method of sliding of full-support frame steel box girder
  • Accurate positioning method of sliding of full-support frame steel box girder

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Embodiment Construction

[0021] figure 1 It is a flow chart of the precise sliding positioning method for the steel box girder with full support of the present invention. The method of the present invention is to set up the full support before installing the steel box girder. The lower part of the whole bracket is a support system, the upper part is a sliding system, and the sliding system is provided with a shifter. After the erection of the whole bracket is completed, the steel box girder is hoisted on the shifter of the upper sliding system of the bracket by a large floating crane, and the longitudinal position of the steel box girder is adjusted through the longitudinal sliding of the steel box girder by the traction device; Positioner to adjust the horizontal position of the steel box girder; then use the jack to push the steel box girder vertically to adjust the elevation of the steel box girder. Through the adjustment of the above three directions, the precise positioning of the steel box gir...

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PUM

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Abstract

The invention relates to an accurate positioning method of the sliding of a full-support frame steel box girder, comprising the following steps of: firstly setting up a steel box girder installation full-support frame, wherein the upper part of the full-support frame is provided with a sliding chute, and a shifter is placed on the sliding chute; then placing the steel box girder on the shifter of the full-support frame by a large-sized floating crane, and towing the steel box girder to longitudinally move to a specified position along the sliding chute; horizontally pushing the shifter by a jack so that the steel box girder horizontally moves to a set position; and finally vertically regulating the steel box girder by the jack so that the accurate positioning and installation of the steel box girder is realized.

Description

technical field [0001] The invention relates to a method for installing a steel box girder of a cable-stayed bridge, in particular to a method for precisely positioning the sliding of a full-support steel box girder. Background technique [0002] The long-span cable-stayed steel structure box bridge is assembled and welded by multiple steel box girders. It is very difficult to accurately locate the steel box girder during installation, especially the structural internal force, elevation, and beam length of the steel box girder under the influence of temperature difference are constantly changing, which adds unfavorable conditions to the installation and construction. At present, the common installation methods of steel box girders include deck crane cantilever hoisting, jack-up method, full support floating hoisting hoisting method, etc.; Usually, long-arm cantilever cranes, half-bracket floating cranes and bridge deck cranes are used for positioning and installation. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 应虹彭立志阎王虎田连民李勇王明诚檀兴华樊俊丽
Owner CHINA COMM ROAD & BRIDGE NORTH CHINA ENG
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