Preloading construction method of a cross beam support of a bridge tower column

A beam support and construction method technology, which is applied in the field of bridge engineering and bridge tower column beam support preloading construction, can solve the problems of heavy workload and difficult construction, and achieve the effects of simple construction, unique method and simple preparation

Active Publication Date: 2019-01-22
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome at least one of the above-mentioned defects in the prior art, the present invention provides a preloading construction method for bridge tower column and beam support, which can be operated by making const

Method used

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  • Preloading construction method of a cross beam support of a bridge tower column
  • Preloading construction method of a cross beam support of a bridge tower column
  • Preloading construction method of a cross beam support of a bridge tower column

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Embodiment 1

[0043] Such as Figure 4 As shown, the dimensions of the beam 2 between the two pylons 1 of the cable-stayed bridge in this embodiment are: beam length a=6.0m, beam width b=3.0m, beam height h=2.0m. Beam 2 is 81.5m away from the bridge deck. In order to pour the concrete of the beam 2 , the supports 3 of the beam 2 need to be preloaded.

[0044] In order to preload the bracket 3 of the beam 2 simply, quickly and effectively, the method of the present invention is used to preload the bracket 3, and the construction is carried out according to the following steps:

[0045] S1 makes the hinged precompression force transmission structure 4, which is composed of hinged diagonal braces A4a, hinged diagonal braces B4b, and force transmission supports 4d connected by steel pins 4g. Specifically, the hinged brace A4a is composed of two section steels and the male head 4c. There is a gap between the section steels, and the two section steels form a whole through corresponding welding ...

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Abstract

The invention relates to the field of bridge engineering and discloses a preloading construction method of a bridge tower column cross beam support, which is suitable for cable-stayed bridges or suspension bridges and the like, in particular comprising the following steps: S1, a hinged preloading force transmission structure is composed of a hinged diagonal brace A, a hinged diagonal brace B, anda force transmission bearing connected by a steel pin; S2, a tower column and a support are erected. The tower column is provided with a tower column reserved hole for passing steel wire rope, the tower column is pre-buried with bracket corbel, and the bracket is installed on the bracket corbel. S3, an articulate precompression force transmission structure is installed, and steel wire rope are worn; the hinged oblique brace A and the bracket are welded and fixed, the hinged oblique brace B and the tower column are welded and fixed, the hinged precompression force transmission structure is fastened with a steel wire rope and fixing through the pre-reserved hole of the tower column; S4, the hinged precompression force transmission structure is pulled by the pulling force exerted on the wirerope by the jack, and indirectly exerting the precompression force on the support; S5 the hinged preload transfer structure, the jack and the wire rope are removed to complete the preload of the bracket.

Description

technical field [0001] The invention relates to the field of bridge engineering, and more specifically, relates to a preloading construction method for a bridge tower column beam support, which is suitable for bridges such as cable-stayed bridges or suspension bridges. Background technique [0002] When constructing the pylon beams of bridges such as cable-stayed bridges or suspension bridges, it is generally necessary to set up supports, and after pre-pressing the supports, erect formwork to pour the beams between the pylons. At present, the conventional method of preloading the support of the beam is to use bulk sandbags or water tanks for loading. However, the positions of the tower columns and beams of cable-stayed bridges or suspension bridges are high, and some are even as high as hundreds of meters. If the above-mentioned conventional methods are used for bracket preloading, the workload of bulk sandbags or water tank injection, etc., is heavy and construction is diff...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 田俊吴晓伟郑愚孙璨童兵黄文通王晓璐左洋丁其乐
Owner DONGGUAN UNIV OF TECH
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