Vertical assembling construction method for trussed arch bridge

Abstract

The invention provides a vertical assembling construction method for a trussed arch bridge, and aims to overcome the shortcomings of large working amount and long working period of the conventional assembling method. The vertical assembling construction method comprises the following steps of: 1, manufacturing fixtures, wherein each fixture comprises a beam and vertical columns fixed at two ends of the beam; a limiting plate and a positioning plate are arranged on the upper end face of the beam; crossed supporting arms are arranged between the vertical columns of two fixtures; three fixtures are connected with one another by the crossed supporting arms to form a fixture group; and two parallel fixture groups serve as a platform for vertically assembling the trussed arch bridge; 2, assembling arch rib sections of the trussed arch bridge, and sequentially hoisting and positioning a lower chord pipe, a lower flat connection pipe, a web rod, an upper chord pipe, a vertical supporting pipe and an upper flat connection pipe on the two fixture groups; and 3, arranging a hydraulic flat plate trolley on the lower parts of the vertical columns of the fixtures, and conveying and transferring the assembled arch rib sections by the hydraulic flat plate trolley. According to the method, the fixture manufacturing working amount is reduced, the fixtures are convenient to move, and the working period can be shortened.

Description

technical field [0001] The invention relates to a vertical construction method of a truss arch bridge, in particular to a vertical construction method of a large-span, large-tonnage, inwardly inclined steel pipe truss arch bridge. Background technique [0002] Since the large-span, large-tonnage, and inward-inclining concrete-filled steel tube truss arches are often installed by cable-stayed buckle-hanging methods for the entire segment, the design requires the vertical assembly of multiple arch rib segments to ensure the matching of the inter-segment interfaces and the alignment requirements. The steel structure arch bridge should be manufactured in the factory according to the design requirements, and transported to the construction site for grouping and connection, then vertical assembly to form an overall arch rib segment. Long-span bridges will require multiple rounds of vertical struggle to complete. After the vertical assembly is completed, remove the temporary conne...

AI Technical Summary

Problems solved by technology

The gantry crane can carry out the horizontal transportation of the segment, but it cannot realize the rotation, so it is necessary to make a turntable or increase the rotation equipment

Heavy construction workload and long construction period

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