Construction methods of hanging beam and assembling cantilever in the bottom of steel case beam

A construction method and technology of steel box girders, applied in bridges, bridge materials, bridge construction, etc., can solve problems such as unrealistic, large steel consumption, unfavorable shipping, etc., and achieve the effect of less equipment, saving man-hours, and high work efficiency

Active Publication Date: 2009-03-04
SHANDONG LUQIAO GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Firstly, to meet the construction requirements of the steel box girder, a large number of temporary piers need to be installed. Secondly, the installation of temporary piers will affect the navigation of the river, which is not conducive to navigation, and the steel box girder must be specially strengthened to meet the force of the push. requirements, consume a large amount of steel
[0006] In addition, compared with the construction in some valleys with complex terrain, it becomes very unrealistic to set up temporary piers in the valley

Method used

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  • Construction methods of hanging beam and assembling cantilever in the bottom of steel case beam
  • Construction methods of hanging beam and assembling cantilever in the bottom of steel case beam
  • Construction methods of hanging beam and assembling cantilever in the bottom of steel case beam

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Embodiment Construction

[0040] Now refer to the attached Figures 1 to 9 To clarify selected embodiments of the present invention, the following descriptions of the embodiments of the present invention according to the present disclosure by those skilled in the art are only exemplary, and are not intended to limit the solutions of the present invention.

[0041] In this embodiment, the steel box girder girder is suspended at the bottom of the girder, and the cantilever assembly construction method includes the construction of the cable tower 15 and the steps of installing the initial section of the steel box girder 22 at the beam of the cable tower, and the bridge deck formed by the steel box girder. In the step of setting up the bridge deck crane 4 with cantilever, when the steel box girder is prefabricated, the inverted T-shaped guide rail 18 is preset under the lower floor 14 corresponding to the two longitudinal partitions 6, and the preset slides on the inverted T-shaped guide rail. Sliding device...

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Abstract

The present invention discloses a construction method in which a steel box girder is hung on a girder bottom to be transported and is assembled by cantilevers. The construction method includes the following steps: a track is arranged on the bottom of a steel box girder; below the steel box girder, a hydraulic creeping formwork mechanism arranged under the steel box girder is utilized to transport a steel box girder to be assembled; and meanwhile, triangular hanging frames are adopted to change hanging points. The present invention provides the method for assembling the steel box girders of a low-cost bridge, which is generally used for the construction of bridges in wide and shallow rivers without navigation conditions and mountainous areas as well as the construction of bridges in rivers with ordinary navigation conditions, and the efficiency of the whole construction process is high.

Description

(1) Technical field [0001] The present invention relates to a steel box girder girder bottom suspension beam transporting and cantilever assembly construction method, in particular to a steel box girder erection method for cable-stayed bridges and suspension bridges, which includes cable tower construction, and the steel box girder at the cross beam is installed Finally, assemble the bridge deck crane on the bridge deck, and use the bridge deck crane cantilever to hoist the steel box girder. (2) Background technology [0002] Steel box girders are lighter than concrete girders, and are widely used in the construction of long-span cable-stayed bridges and suspension bridges at home and abroad. Due to the different structural forms of bridges, topographic conditions of bridge sites, shipping conditions, and transportation conditions, the erection methods are also different. The conventional method for installing steel box girders of cross-river bridges at home and abroad is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D21/10E01D2/04E01D101/30
Inventor 杨荣泉贾志坚张光桥刘敏闫宗山万雨帆荣杰王书明孙琪瑜
Owner SHANDONG LUQIAO GROUP
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