Application method of fixed type asymmetric bridge cantilever assembly equipment

Abstract

The invention discloses an application method of fixed type asymmetric bridge cantilever assembly equipment. The bridge cantilever assembly equipment comprises a main girder, landing legs arranged at the lower part of the main girder, a first crown block and a second crown block, wherein the first crown block and the second crown block are arranged on the main girder and can move along the main girder; and the landing legs include fixed landing legs and mobile landing legs. According to the suggestion of the application method, the method comprises the steps of (1) arranging the first crown block and the second crown block on the main girder at the center of a pier; (2) moving the first crown block and the second crown block to the main girder at the left side of the pier; (3) lifting beams by the first crown block from the left side and transporting to the installation position at the right side along the main girder; (4) lifting prefabricated beam segments to the installation position by the second crown block; and (5) adjusting and fixing fall positions of two symmetric block segments to complete installation of the symmetric beam segments.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to an application method of a fixed asymmetric bridge cantilever assembling equipment. Background technique [0002] At present, the bridge cantilever assembly of the "U+box" prefabricated structure is mainly constructed by symmetrically arranged mobile bridge deck cranes. Then move the bridge deck crane symmetrically forward to the next installation position, symmetrically lift and install the next prefabricated beam section, ... until the installation of all beam sections on both sides of the pier is completed. [0003] When using this type of equipment, it is necessary to follow the requirements of the "cantilever balanced assembly process", that is, the prefabricated sections are lifted and installed symmetrically on both sides of the bridge pier. It can be lifted vertically and installed symmetrically", which has certain limitations. [0004] In actual construction, bridges u...

AI Technical Summary

Problems solved by technology

[0003] When using this type of equipment, it is necessary to follow the requirements of the "cantilever balanced assembly process", that is, the prefabricated segments are hoisted and installed symmetrically on both sides of the pier. It can be lifted vertically and installed symmetrically”, and its use has certain limitations

[0004] However, in actual construction, because bridges using cantilever assembly technology usually need to span existing rivers, railways, highways and other structures, such as using mobile deck cranes for installation, they often cannot meet the transportation conditions in the above premise, resulting in "Symmetrical lifting and installation cannot be realized on both sides of the pier"; or it can meet the transportation conditions, but the cost is too high, which is not economically cost-effective

Images