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Construction method for locating bracket of tunnel anchorage prestressed system

A technology for positioning brackets and construction methods, which is applied in the direction of erecting/assembling bridges, bridge parts, bridge materials, etc., which can solve the difficulty of controlling the construction accuracy of the prestressing system in the cave, the high requirements for the construction accuracy of the prestressing system, and the quality of the supporting steel truss Reliable decision-making basis and technical indicators, good assembly environment, and high positioning accuracy

Inactive Publication Date: 2017-10-03
CHINA CONSTR SIXTH ENG DIV CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the construction of the prestressed positioning bracket of the tunnel type anchorage of the domestic suspension bridge is to assemble the prestressed positioning bracket in the tunnel, but the working surface in the tunnel is narrow, the steel truss of the bracket is heavy, and it is difficult for large machinery to operate normally in the tunnel, making the construction difficult. , and the prestressing system requires high construction accuracy, and it is difficult to control the construction accuracy of the prestressing system in the cave

Method used

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  • Construction method for locating bracket of tunnel anchorage prestressed system
  • Construction method for locating bracket of tunnel anchorage prestressed system
  • Construction method for locating bracket of tunnel anchorage prestressed system

Examples

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Effect test

Embodiment 1

[0042] (1) Manufacturing positioning bracket truss unit, said positioning bracket truss unit includes 3 positioning bracket sheet units, each of said positioning bracket sheet unit includes a plurality of vertical rods 1 arranged in parallel and spaced in the vertical direction and all vertical The bottoms of the rods are all in a line. The vertical rods 1 are all made of I-steel to serve as the supporting structure of the positioning bracket and the frame unit. A plurality of horizontal rods are welded on the vertical rod 1 and spaced up and down in the horizontal direction. 2. The cross-bar 2 at the bottom and the cross-bar 2 at every two cross-bars 2 above the bottom-most cross-bar 2 are made of I-steel, and the remaining cross-bars 2 are made of channel steel and I-steel. The rods 2 are arranged in full length on all the vertical rods 1, and the cross rods 2 made of channel steel are alternately arranged in full length on all the vertical rods 1. This not only ensures the so...

Embodiment 2

[0054] (1) Manufacturing positioning bracket truss unit, the positioning bracket truss unit includes two positioning bracket sheet units, each of the positioning bracket sheet unit includes a plurality of vertical rods 1 arranged in parallel and spaced in the vertical direction and all vertical The bottoms of the rods are all in a line. The vertical rods 1 are all made of I-steel to serve as the supporting structure of the positioning bracket and the frame unit. A plurality of horizontal rods are welded on the vertical rod 1 and spaced up and down in the horizontal direction. 2. The cross-bar 2 at the bottom and the cross-bar 2 at every 3 cross-bars 2 above the bottom-most cross-bar 2 are made of I-steel, and the remaining cross-bars 2 are made of channel steel and I-steel. The rods 2 are arranged in full length on all the vertical rods 1, and the cross rods 2 made of channel steel are arranged in full length alternately on all the vertical rods 1. This can ensure the solid and ...

Embodiment 3

[0066] (1) Manufacturing positioning bracket truss unit, the positioning bracket truss unit includes 3 positioning bracket sheet units, each of the positioning bracket sheet unit includes a plurality of vertical rods 1 arranged in parallel and spaced in the vertical direction and all vertical The bottoms of the rods are all in a line. The vertical rods 1 are all made of I-steel to serve as the supporting structure of the positioning bracket and the frame unit. A plurality of horizontal rods are welded on the vertical rod 1 and spaced up and down in the horizontal direction. 2. The cross-bar 2 at the bottom and the cross-bar 2 at every two cross-bars 2 above the bottom-most cross-bar 2 are made of I-steel, and the remaining cross-bars 2 are made of channel steel and I-steel. The rods 2 are arranged in full length on all the vertical rods 1, and the cross rods 2 made of channel steel are alternately arranged in full length on all the vertical rods 1. This not only ensures the soli...

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Abstract

The present invention discloses a construction method for a locating bracket of a tunnel anchorage prestressed system, comprising the following steps: manufacturing locating bracket racks outside a tunnel, assembling the racks into segmented locating bracket steel trusses, and installing rolling wheels at the bottoms of the trusses, and temporarily fixing prestressed pipes on the trusses; laying a slip track at the bottom of the interior of the tunnel, putting the steel trusses onto the slip track through hoisting in a segmented manner, and slowly lowering the steel truss by a winch; when the steel truss slides to the design positions, removing the rolling wheels from the steel truss for sliding of the next segment of section truss; and adjusting and fixing the positions of the steel trusses and the prestressed pipes. Through the method, the prestressed locating bracket is subjected to assembly construction, the process is simple and the project progress is fast, accordingly the construction period is greatly shortened, construction costs are reduced, and the economic efficiency is very obvious.

Description

Technical field [0001] The invention is a tunnel type anchorage prestressing system positioning bracket construction method, which is suitable for tunnel anchors with a large buried depth, and can meet the construction requirements for the prestressing system positioning bracket in the current building construction process. Background technique [0002] Due to the spanning ability and aesthetics of suspension bridges, more and more suspension bridges have been constructed in my country in recent years. The construction of anchorage prestressed anchorage systems for suspension bridges is one of the key control contents of suspension bridge construction. How to speed up the construction progress of prestressed anchorage systems and how to ensure The positioning quality of the prestressed anchoring system has always been the subject of research by construction builders. [0003] At present, the construction of domestic suspension bridge tunnel anchorage pre-stressed positioning bracket...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/14
CPCE01D21/00E01D19/14E01D2101/32
Inventor 于海力翟跃张永康余剑
Owner CHINA CONSTR SIXTH ENG DIV CORP
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