Method for casting concrete 0# block support by continuous beam cantilever

A technology of pouring concrete and supporting methods, which is applied to bridges, buildings, bridge construction, etc., can solve the problems of difficulty in ensuring the rigidity of supports, many support materials, and uneconomical steel pipe supports for high-pier bridges, and achieve simple structure, easy installation, and use less effect

Inactive Publication Date: 2010-03-03
CHINA RAILWAY NO 9 GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the previous construction method, the construction platform adopts steel pipe supports, and the supports are erected on the caps or temporary poured concrete foundations. This method uses more support mate

Method used

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  • Method for casting concrete 0# block support by continuous beam cantilever
  • Method for casting concrete 0# block support by continuous beam cantilever
  • Method for casting concrete 0# block support by continuous beam cantilever

Examples

Experimental program
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Embodiment

[0018] Example: The construction of the Beishahe Super Bridge on the Yiha-Dalian Passenger Dedicated Line as an example:

[0019] Each triangular bracket consists of 1 triangular bracket I-steel horizontal bar made of I 56 I-steel, 1 triangular bracket I-steel diagonal brace made of I 40 I-steel, and 1 triangular bracket I-steel diagonal brace made of I 40 I-steel, and 1 with] The triangular bracket channel steel vertical brace made of 40 channel steel and one triangular bracket channel steel diagonal brace made of ]40 channel steel are composed of the triangular bracket I-steel horizontal bar length of 5.5m, and the triangular bracket The length of the I-beam diagonal brace is 5.0m, and the triangle bracket I-beam diagonal brace is welded to the triangle bracket I-beam horizontal rod at a distance of 4.2m from one end of the triangle bracket I-beam horizontal rod to form an included angle of about 43° , the welding seam is required to be free of defects, fully welded, and the...

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PUM

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Abstract

The invention relates to a method for casting concrete 0# block support by a continuous beam cantilever, comprising the following steps: (1) a triangular bracket is manufactured, and each triangular bracket is composed of a horizontal rod, an inclined strut, a channel steel shore, a channel steel inclined strut, a reinforced steel plate and a reinforced steel plate I; 2) the support is pre-casted:each group of support is composed of a pre-cast steel plate, a smooth plate, three vertical steel plates, an embedded bar and a reinforced bar fabric; 3) finishing screw threaded steel bars are pre-casted: every four finishing screw threaded steel bars are one group, a PVC pipe is sheathed outside each finishing screw threaded steel bar, and two ends of each finishing screw threaded steel bar areprovided with a steel box and a reinforced steel plate II and are fixed by blind nuts, four groups of the finishing screw threaded steel bars are arrayed horizontally and are pre-casted in pier cap concrete; 4) the triangular bracket is mounted: the horizontal rod of the triangular bracket is respectively welded on the steel box and the reinforced steel plate II, the inclined strut thereof is welded on the smooth plate in the support; the method has the advantages that: the method does not occupy the space under the bridge, the used material is less compared with a steel pie bracket, the structure is simple, and assembly and disassembly are convenient.

Description

Technical field: [0001] The invention is a method for cantilever pouring reinforced concrete continuous beam 0# block support in bridge engineering spanning highways, railways or rivers. Background technique; [0002] With the advancement of technology and the application of new materials, long-span concrete continuous beams are widely used in bridge projects spanning highways, railways, and rivers. During the continuous beam cantilever pouring construction process, the 0# block is used as the beam structure on the top of the pier, and it is the reaction point of the hanging basket and the working platform for installing the hanging basket. The concrete of block 0# must be poured on the erected support platform. According to the previous construction method, the construction platform adopts steel pipe supports, and the supports are erected on the caps or temporary poured concrete foundations. This method uses more support materials and is only suitable for bridges with low ...

Claims

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Application Information

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IPC IPC(8): E01D21/10
Inventor 刘壮郑晓峰孙磊陈立涛钟建立张艳娇宁毛辉王长江王志朋蔡伟
Owner CHINA RAILWAY NO 9 GRP
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