Support system for constructing steel arch bridge by repeated vertical rotating method

Abstract

The invention discloses a support system for constructing a steel arch bridge by a repeated vertical rotating method. A horizontal connecting bracket consists of two octagonal connecting rods in a horizontal plane and a plurality of first connecting rod systems which integrate the two connecting rods by welding; two anchors are respectively anchored in a mountain and fixedly connected with ends of the connecting rods; two lower steel arch rib hinged supports are respectively hinged with the other ends of the connecting rods and used for connecting lower steel arch ribs; a plurality of lower supports are vertically arranged below the two connecting rods; and upper steel arch rib assembly brackets are arranged above the connecting rods and comprise a plurality of upper supports which are vertical to the connecting rods, and a plurality of second connecting rod systems which integrate the upper supports by welding. The support system has different functions at different construction stages, can bear different loads such as pull, press, bend and the like, has stable and reliable connection and simple construction, and provides safe and quality assurance for the repeated steel arch vertical rotating method.

Description

technical field [0001] The invention relates to a bridge construction device, in particular to a support system for constructing a steel arch bridge by the multiple vertical rotation method. Background technique [0002] With the increasing number of railway and expressway construction projects in our country, more and more bridge projects are being built in deep mountains and valleys with poor natural conditions, especially long-span steel arch bridges, because this structure is especially suitable for deep valleys and rapid construction. The plateau canyon area with harsh environment. Compared with other construction methods, the construction of steel arch bridges in these areas by the multiple vertical rotation method has outstanding advantages. [0003] For multiple vertical rotations, the steel arch is generally assembled into two or several segments on the slopes of the two canyons at a certain angle. Then it is turned vertically in several steps and fixed to the nex...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the main arch of the arch bridge is greatly affected by the natural environment during the multiple vertical rotation construction, and the construction safety and quality are difficult to be guaranteed.

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