Hanging basket cantilever method construction method of large-span continuous rigid beam sidespan cast-in-place beam section

A rigid-frame beam and cast-in-place technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult erection of supports, inconvenient surrounding environment, and high safety risks, so as to reduce the intensity of aerial work and shorten the construction period. , the effect of low security risk

Active Publication Date: 2012-01-25
THE 2ND ENG OF THE 12TH BUREAU GROUP OF CHINA RAILWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems caused by difficulties in erecting supports, large traffic interference, and high safety risks when the existing long-span continuous rigid frame beams are constructed across railways, highways, municipalities, densely populated areas, and places with steep construction terrain. Due to the problems of long construction period, high cost and inconvenience to the surrounding environment, a hanging basket suspension casting construction method for side-span cast-in-place beam sections of long-span continuous rigid frame beams is provided

Method used

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  • Hanging basket cantilever method construction method of large-span continuous rigid beam sidespan cast-in-place beam section
  • Hanging basket cantilever method construction method of large-span continuous rigid beam sidespan cast-in-place beam section
  • Hanging basket cantilever method construction method of large-span continuous rigid beam sidespan cast-in-place beam section

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Experimental program
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Effect test

Embodiment 1

[0023] The hanging basket hanging construction method of the side span cast-in-place beam section of the long-span continuous rigid frame beam is realized by the following steps:

[0024] (1) After the middle span of the rigid frame beam is closed, move the hanging basket on one side of the side span forward, adjust the center line of the hanging basket, perform steel bar binding and prestress installation, and use the side-span hanging basket to cantilever one side of the outer side of the transition pier For # and 2# cast-in-place sections, the concrete reaches the design tensile strength and modulus of elasticity and then tensions the prestressed steel strands. At this time, the hanging basket is located on the 1# and 2# completed beam sections;

[0025] (2) Put the hanging basket on the pier, and carry out construction work on the 3# cast-in-place section:

[0026] Step 1: Release the hanging points of the inner and outer sliding beams, thereby separating the inner and out...

Embodiment 2

[0042] The hanging basket hanging construction method of the side span cast-in-place beam section of the long-span continuous rigid frame beam is realized by the following steps:

[0043] (1) After the middle span of the rigid frame beam is closed, move the hanging basket on one side of the side span forward, adjust the center line of the hanging basket, perform steel bar binding and prestress installation, and use the side-span hanging basket to cantilever one side of the outer side of the transition pier For # and 2# cast-in-place sections, the concrete reaches the design tensile strength and modulus of elasticity and then tensions the prestressed steel strands. At this time, the hanging basket is located on the 1# and 2# completed beam sections;

[0044] (2) Put the hanging basket on the pier, and carry out construction work on the 3# cast-in-place section:

[0045] Step 1: Release the hanging points of the inner and outer sliding beams, thereby separating the inner and out...

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Abstract

The invention relates to large-span continuous rigid beam construction crossing railways, roads, personal compact districts and steep construction terrains, in particular to a hanging basket cantilever method construction method of a large-span continuous rigid beam sidespan cast-in-place beam section, solving the problems of long construction, high cost and inconvenience for surrounding environment due to difficulty in building a bracket, large interference on travelling and large safety risk during construction crossing places of railways, roads, personal compact districts and steep construction terrains. The hanging basket cantilever method construction method of the large-span continuous rigid beam sidespan cast-in-place beam section comprises the following steps of: constructing cast-in-place sections 1# and 2#, releasing inner and outer slippage suspension points; integrally moving a hanging basket main member and a hanging basket bottom mould backwards; installing a bottom mould of a cast-in-place section 3#; and forwards moving the hanging basket main member to the cast-in-place section 2# and constructing the cast-in-place section 3#. The construction method in the invention is simple in operation, and is widely suitable for sidespan cast-in-place beam section construction of large-span continuous rigid beams.

Description

technical field [0001] The invention relates to the construction of large-span continuous rigid-frame beams spanning railways, highways, municipalities, densely populated areas and steep construction terrains, in particular to a hanging basket suspension construction method for side-span cast-in-place beam sections of large-span continuous rigid-frame beams. Background technique [0002] In the field of cantilever rigid frame construction of bridges spanning railways, highways, municipalities, densely populated areas and steep construction terrains, especially in the construction of continuous rigid frame beams with high piers and large spans, the side spans of cast-in-place beams are relatively long; Frame method and bracket method, that is, brackets or brackets must be set up for support during construction. The frame method has the following problems: ⑴ cast-in-place supports need to be erected at the transition pier (continuous rigid frame direction), but in densely popu...

Claims

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Application Information

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IPC IPC(8): E01D21/10
Inventor 渠茂涛雷军赵香萍
Owner THE 2ND ENG OF THE 12TH BUREAU GROUP OF CHINA RAILWAY
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