Non-bracket closure method for upper cross beam of steel tower and construction system

A technology without brackets and beams, used in bridges, bridge construction, bridge forms, etc., can solve the problems of increasing steel consumption, increasing construction costs, and occupying a large space, saving construction costs, facilitating construction operations, and occupying less space. Effect

Active Publication Date: 2013-12-11
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem of increasing the amount of steel used for installing the upper beam, increasing the construction cost, and occupying a large space

Method used

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  • Non-bracket closure method for upper cross beam of steel tower and construction system
  • Non-bracket closure method for upper cross beam of steel tower and construction system
  • Non-bracket closure method for upper cross beam of steel tower and construction system

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the method for closing the upper beam of a steel tower without support provided by the present invention, the upper beam includes a left upper beam 1 and a right upper beam 2 that are hoisted and spliced ​​together, and includes the following steps,

[0020] Step 1. Between the left and right steel tower columns 3 and 4 of the steel tower, three active cross braces 5 are arranged horizontally from top to bottom. One end of the active cross brace 5 is fixed on the inner surface of the left steel tower column 3, and the other end The active cross brace joint 6 is fixed on the inner side of the right steel tower column 4. The active cross brace joint 6 includes left and right pedestals 61, 62 and lining connecting pipe 63, and the other end of the active cross brace 5 passes through to ...

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PUM

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Abstract

The invention discloses a non-bracket closure method for an upper cross beam of a steel tower and a construction method. The non-bracket closure method for the upper cross beam of the steel tower comprises the following steps of: hoisting a right upper cross beam, pushing a horizontal jack, adjusting the distance between an active cross brace and a right steel tower column to offset the left-right displacement generated after hoisting the right upper cross beam on the right steel tower column, arranging a closure adjusting device at the top of the upper cross beam, pushing a vertical jack in the closure adjusting device to adjust the vertical displacement between the closure ports of the left and right upper cross beams, and adjusting the front-back displacement between the closure ports of the left and right upper cross beams through the pre-tightening force generated by tightening a bolt to realize closure of the left and right upper cross beams. According to the method and system disclosed by the invention, since the distance between the left and right steel tower columns is adjusted by use of the active cross brace and an active cross brace joint and the upper cross beams are mounted by a method of adjusting the horizontal and vertical displacement of the left and right upper cross beams by the closure adjusting device, the steel consumption is not increased, the construction cost is greatly saved, a small space is occupied, and the construction operation on the steel tower is facilitated.

Description

technical field [0001] The invention relates to a construction method for closing beams on steel towers of suspension bridges in bridge engineering. Background technique [0002] During the installation process of the steel tower of the bridge, the installation of the upper beam of the steel tower is a high-altitude operation, and the construction safety risk is great. During the segmental hoisting of the upper beam, the steel tower column was deformed, which affected the installation accuracy of the upper beam and made it difficult to position the high-level air-conditioning. In order to meet the hoisting and position adjustment needs of the upper beam, the traditional method is to set up a bracket, and complete the hoisting and splicing of the upper beam on the bracket. The disadvantage of this method is that setting up the bracket increases the amount of steel used, and the construction cost is high. In addition, the bracket takes up a lot of space, which is not conduciv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/14E01D11/02
Inventor 李军堂冯广胜田继开宋小三高双剑郑大超李陆平赵发亮张耀刘宏达
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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