Overall long-distance pushing slippage construction method for large-span bridge box girder structure of large-span bridge

Abstract

The invention provides an overall long-distance pushing slippage construction method for a large-span bridge box girder structure. Under the conditions that terrain conditions of a construction site are special, and construction operation cannot be performed below a span of the large-span bridge box girder structure, a bridge box birder is jacked up by using a pushing unit and a jacking unit in a self-balancing slippage device and moves, when the self-balancing slippage device is used, horizontal thrust cannot be applied to a permanent bridge pier, pushing stability and pushing safety on the bridge box girder are ensured, influences of special terrain conditions of a span portion of the bridge box girder structure are effectively avoided, particularly, under the conditions that important traffic main lines such as an expressway and a railway are arranged below the bridge box girder structure, and road closure construction cannot be realized, by using the pushing slippage construction method, road closure is not required, smooth traffic is guaranteed, and the accuracy and the safety of long-distance pushing construction on the large-span bridge box girder are ensured.

Description

technical field [0001] The invention relates to the technical field of viaduct and bridge engineering construction, in particular to a long-distance pushing and sliding construction method for the overall long-distance box girder structure of a long-span bridge. Background technique [0002] At present, the building structures of long-span bridge box girders have been applied more and more, and the existing slip construction methods are commonly used to pull slip and push slip. The two types of slip mainly include the following three main points : [0003] Point 1: Sliding track and support, set reliable support and track along the direction of structural sliding, and the space under the sliding track must be closed for construction during the construction process; [0004] Point 2: The horizontal traction system has high requirements on the support points, and a stable horizontal traction system support point must be set during the sliding process; [0005] Point 3: It is...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a long-distance jacking and sliding construction method for the whole long-distance box girder structure of a long-span bridge to solve the problems existing in the sliding construction of a long-span bridge box girder structure limited by the construction period and terrain conditions in the prior art

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