Integral Pushing Construction Method of Network Tied Arch Bridge

A technology of tied arch bridge and jacking construction, applied in arch bridges, bridges, bridge forms, etc., can solve the problem of high construction cost, achieve the effect of short construction period, high construction stability and automation, and improve safety performance

Inactive Publication Date: 2011-11-30
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The jacking process of this scheme does not include suspenders, and uses a construction technique of jacking of guide beams; but for singl

Method used

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  • Integral Pushing Construction Method of Network Tied Arch Bridge
  • Integral Pushing Construction Method of Network Tied Arch Bridge
  • Integral Pushing Construction Method of Network Tied Arch Bridge

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Embodiment Construction

[0045] refer to Figure 1-Figure 10 , a kind of overall pushing construction method of network tie-bar arch bridge, at least one temporary pier 5 is arranged between two abutments 6, and this construction method comprises the following steps:

[0046] a. Assemble and weld the steel box tie beam 3 on the backfield assembly platform 7;

[0047] b. Install the first-stage beam 18;

[0048] Phase I crossbeam 18 is the first crossbeam at the front end of the arch bridge pushing direction and part of the crossbeam at the rear of the tie beam;

[0049] c. Install the main arch ring 1;

[0050] The installation steps of the main arch ring are as follows: symmetrically install the steel truss type temporary support 4 on the steel box tie beam 3, and then respectively install the first section of the main arch ring 21 at both ends of the steel box tie beam 3, and install one end on the steel box tie beam 3 The other end is installed on the steel truss type temporary support 20; then th...

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Abstract

The invention relates to a guiding-beam-free integral thrusting construction method of a network tied arch bridge. The method is characterized in that the following structure and method are adopted for thrusting the network tied arch bridge: a vertical jack is arranged at the front end in the thrusting direction of a steel box tie beam; a sliding mechanism which can ensure a piston of the jack toslide on the top surfaces of temporary piers is arranged on the top surfaces of the temporary piers; during thrusting, when the front end of the arch bridge is close to the temporary piers, the piston of the jack moves downwards to push against the sliding mechanism and the height of the front end of the arch bridge relative to the top surfaces of the temporary piers is adjusted by controlling the extension elongation of the piston to ensure chutes at the bottom of the steel box tie beam to fall on pulleys; and the chutes are supported by the pulleys and slide relative to the pulleys along with thrusting movement of the arch bridge. The method has the following beneficial effects: in the thrusting process, a main arch ring, inclined hangers, the steel box tie beam, the temporary supports and the like are integrally thrust, thus giving play to the function of partial inclined hangers to enhance the structural rigidity in the thrusting process, simultaneously avoiding installation inconvenience and construction difficulty after the members are thrust in place and improving the thrusting construction efficiency.

Description

technical field [0001] The invention relates to a construction method of an arch bridge, in particular to a construction method of overall pushing construction without guide girders of a mesh tie-bar arch bridge. Background technique [0002] In 1955, Norwegian professor Per Tveit (Lin Ying, He Chengheng, etc., Netted Tied Arch Bridge - An Economical and Beautiful Bridge Type, "Structural Engineer", Volume 22, No. 5, October 2006) proposed a networked tied arch bridge. The concept of this type of tied arch bridge is characterized by the fact that the suspenders are tilted at a certain angle, causing the suspenders to cross each other at least twice, whereby the suspenders form a net-like form. This type of bridge has the advantages of superior mechanical performance, small cross-sectional size, high structural rigidity, low material consumption, economical cost, and light structure appearance. Therefore, this type of bridge should have a greater competitive advantage in hig...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D4/00
Inventor 谢海波田仲初易旺潘权
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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