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Multi-arch bridge rib vertical turning technical method

A vertical rotation and continuous technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problem of a large number of continuous jacks and buckle towers, and achieve the effect of convenient construction and low construction cost

Active Publication Date: 2008-06-18
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For continuous arch bridges, due to the large number of vertically rotated spans, if the construction is carried out according to the method of vertically rotating single-span arch ribs, there will be a problem of too many continuous jacks and buckle towers

Method used

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  • Multi-arch bridge rib vertical turning technical method
  • Multi-arch bridge rib vertical turning technical method
  • Multi-arch bridge rib vertical turning technical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Taking the bridge with three pylons as an example to illustrate the construction method of the vertical rotation of the arch ribs of the multi-span continuous arch bridge.

[0028] The main steps of this method are:

[0029] 1. The buckle cable tower can be installed with a tower crane after a certain section of the rigid frame beam cantilevered, and it can be changed to a loose assembly after reaching a certain height; after the three towers are assembled, install the pressure tower cable and the rear cable wind, and tension Pull to the design tonnage to form a stable system.

[0030] 2. Assembly of arch ribs

[0031] Set up a door crane lifting station near the side hole with steel pipe arch. After the steel pipe arch rib segment is processed in the factory, it is transported by water to the hoisting station; it is hoisted from the hoisting station to the bridge deck transport vehicle, and transported to the location to be installed. After the parts of the arch rib...

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Abstract

The present invention relates to a construction method of bridges, in particular to a vertical rotation method of the arch ribs of a multi-span continuous arch bridge. The construction method includes seven steps: (1) the tower frames of a side tower and a middle tower, a hoisting station, a mobile gantry crane and an arch rib trestle are assembled, and a rear archorage system is installed; (2) arch ribs are assembled on the arch rib trestle; (3) the fastening anchorage cables of the steel pipe arch ribs of a first span are hung, and a swivel tensioner is installed; (4) the steel pipe arch ribs of the first span are rotated and closed; (5) the fastening anchorage cables of the steel pipe arch ribs of a second span are hung; (6) the steel pipe arch ribs of the second span are rotated and closed, and the working procedure is repeated until the rotation and the closure of the steel pipe arch ribs of the nth span are finished; (7) arch feet are closed, steeves are adjusted and the construction equipment is disassembled. The present invention has the advantages of convenient construction, safety, reliability and low construction cost.

Description

technical field [0001] The invention relates to a bridge construction method, in particular to a technical method for vertical rotation of arch ribs of multi-span continuous arch bridges in bridge engineering. Background technique [0002] When conventional arch bridges perform vertical rotation of arch ribs, the vertical rotation of single-span arch ribs is generally carried out. The vertical rotation of single-span arch ribs usually requires a set of buckle towers, anchor cables, and buckle systems for each half-span. The anchor cables and buckle cables are stretched by continuous jacks. Vertical rotation is relatively independent and does not affect each other. For continuous arch bridges, due to the large number of vertically rotated spans, if the single-span arch rib vertically rotated method is used for construction, the problem of excessive number of continuous jacks and fastening towers will arise. For this reason, a more economical new technology of vertical rotat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/08
Inventor 秦顺全潘东发张立超周外男李军堂毛伟琦涂满明王东辉刘翠云周超舟刘崇亮江涌张瑞霞
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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