Steel arch frame section moving and hoisting system and method for construction of upper bearing type arch bridge

Abstract

The invention discloses a steel arch frame section moving and hoisting system and method for construction of an upper bearing type arch bridge. The system comprises a cable crane for hoisting arch frame splicing sections and an arch frame sectional transferring device for moving the arch frame splicing sections one by one; and the arch frame sectional transferring device comprises a splicing section moving device for horizontally moving the arch frame splicing sections one by one and a horizontal moving channel for horizontally moving the splicing section moving device, and the horizontal moving channel is arranged on a rear side beam section supporting structure. The method comprises the following steps of 1, constructing a bridge lower supporting structure; 2, constructing the cable crane and the arch frame sectional transferring device; and 3, assembling the steel arch frame. According to the system, the design is reasonable, the using effect is good, the arch frame sectional transferring device is used in cooperation with the cable crane, the arch frame sectional transferring device moves the arch frame splicing section to the hoisting region of the cable crane, the cable cranehoists the arch frame splicing section into place, and the steel arch frame assembling process can be simply and rapidly completed.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a system and method for segmentally moving and hoisting a steel arch frame used in the construction of an overhead arch bridge. Background technique [0002] The overhanging arch bridge is a bridge whose deck is set on the main load-bearing structure of the bridge span (that is, the arch rib). At the junction of the bedrock, both ends of the arch ribs of the upward arch bridge are supported on the abutment, which is an important component supporting the structure on the arch. The abutment used to support the arch rib is a permanent abutment, which is generally a reinforced concrete structure supported on the bedrock. Among them, the arch rib is also called the main arch or the arch ring. For the construction of an overhead box arch bridge with a reinforced concrete box girder as the arch rib, the arch rib is usually cast-in-place with a pre-erected steel ...

AI Technical Summary

Problems solved by technology

[0004] When the steel arch frame of the overhead arch bridge is assembled and erected by cable hoisting method, the construction operation is relatively random, and there is no set of unified and standardized construction methods to follow. Difficult to assemble

At the same time, due to the limited lifting range of the cable crane, the site needs to be equipped with hoisting equipment to hoist the pre-assembled steel truss segments within the lifting range of the cable crane. Unfavorable and limited construction space greatly restricts the normal use of hoisting equipment

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