Bridge lifting device, bridge transformation system and bridge transformation construction method

Abstract

The invention relates to the technical field of bridge reinforcement, and concretely relates to a bridge lifting device, a bridge transformation system and a bridge transformation construction method.The method comprises the following steps that S1, a to-be-lifted bridge section is lifted through a lifting unit arranged at the lifting ends of two bridge lifting mechanisms and temporarily supported; S2, the two bridge lifting mechanisms are moved to the two sides of the next to-be-lifted bridge section till lifting and temporary supporting of all the bridge sections are completed; S3, two setsof semi-frame bodies are placed on the ground on the two sides of the lifted bridge section, and the lifting device is arranged above the two sets of semi-frame bodies; S4, the lifting device lifts the two sets of semi-frame bodies to the preset height and then moves to the installation position of a construction hanging bracket, and the two sets of semi-frame bodies are arranged on a pier in a sleeving mode after being spliced; and S5, connection between the lifting device and the semi-frame bodies is removed, and step S3 and step S4 are repeated to install the next construction hanging bracket. The problems that in the prior art, a hydraulic jack is adopted for pier heightening, the jacking stroke is limited, a specially-designed steel cushion block needs to be adopted, and the construction efficiency is low can be solved.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement, in particular to a bridge hoisting device, a reconstruction system and a reconstruction construction method. Background technique [0002] Bridge pier connection construction is a more efficient and economical construction method in bridge reconstruction construction. It is commonly used in urban overpass reconstruction, and its main purpose is to adjust the elevation of existing bridges. [0003] In the existing construction method, before construction, it is necessary to set up a chassis structure system on the existing bridge piers, which is mainly used to bear the jacking load and transfer the load to the lower bridge piers or the foundation structure; set up a pallet structure system, which is mainly used for supporting The upper part is jacked up from the structure. A hydraulic jack is placed between the chassis structure and the pallet structure. After the existing pier is cu...

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Problems solved by technology

[0005] Aiming at the defects existing in the prior art, the object of the present invention is to provide a bridge lifting device, a reconstruction system and a construction method for reconstruction, which can solve the problems in the prior art that hydraulic jacks are used for the height of bridge piers, and the jacking stroke is limited, requiring special hydraulic jacks. The designed steel block, and the problem of low construction efficiency

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