Arc-shaped pier cap construction arch support assembly and arc-shaped pier cap construction method

Abstract

The invention discloses an arched support assembly used for the arc-shaped pier cap construction and an arc-shaped pier cap construction method, and relates to the technical field of bridge construction. The arched support assembly includes an upper support, a base and a supporting structure, wherein the upper support includes a number of arched support bodies and tie systems, the arched support bodies are connected through the tie systems, the upper surface of the upper support is provided with an arc-shaped construction surface adapted to an arc-shaped pier cap, the upper support is installed on the base, the supporting structure is used for supporting and fixing the base. The arched support assembly is used in the arc-shaped pier cap construction process, arched support bodies are assembled in a construction site and then hoisted integrally, risks brought by high-altitude support assembling are reduced, in the arched support body disassembly process, the supporting structure is disassembled, then the upper support with an arc-shaped pier cap formwork and the base are integrally placed on a platform or the ground, the number of times of the disassembly is small, the high-altitude operation time is short, the arc-shaped pier cap construction efficiency is improved, the whole bridge construction speed is improved, and the cyclic utilization rate of the arched support assembly is high.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to an arch support assembly for construction of arc-shaped pier caps and a construction method for arc-shaped pier caps. Background technique [0002] The high railway pier is the substructure of the bridge, and the construction progress of the high pier affects the overall construction progress of the bridge. The bottom surface of the high railway pier cap is generally designed to be "m" or "n" shaped arc. At present, the main construction methods used for arc-shaped pier caps are: full hall support method and no floor support construction method. Among them, the full hall support method has the following disadvantages: 1) the erection of the full hall support takes a long time, especially the arc pier cap support; ; 3) During the erection process of the arc-shaped pier cap bracket, there are many high-altitude operations, which are difficult, high-work operations are ...

AI Technical Summary

Problems solved by technology

Among them, the full hall support method has the following disadvantages: 1) the erection of the full hall support takes a long time, especially the arc pier cap support; ; 3) In the process of erecting the arc-shaped pier cap bracket, there are many high-altitude operations, which are difficult, high-work operations are risky, and the safety factor is low

This method has the following disadvantages: 1. The steel beam or Bailey beam frame is a simply supported system as a load-bearing structure, and there is a certain span limit. Curved pier caps are not applicable; 2. As load-bearing structures, shaped steel beams or Bailey beams cannot directly adapt to the linear changes of the arc shape at the bottom of the "m" and "n" shaped railway pier caps. The roof of the thunder beam is additionally equipped with a support system that adapts to the arc shape, which increases the design difficulty and engineering quantity of the support, and the installation and removal are more complicated

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