Bridge pier connecting device for bridge lifting process and construction method for bridge pier connecting device

Abstract

The invention discloses a bridge pier connecting device for a bridge lifting process and a construction method for the bridge pier connecting device, and relates to a connecting technology for bridge piers in bridge reconstruction processes. According to the connecting technology, self-compacting micro-expansive reinforced concrete pier columns and encasing steel plates are involved; the sizes and the numbers of internal vertical reinforcements are the same as those of vertical reinforcements in the conventional pier column structures; sealed stirrups are adopted, and are densely arranged within entire section ranges along connecting sections of the bridge piers; when more than four main vertical reinforcements are arranged on each side in the rectangular pier columns, combined stirrups are arranged; studs are welded on the surfaces of the encasing steel plates to improve the combined mechanical performance of the steel plates and concrete; and the encasing steel plates have a function of restricting core concrete, and can also serve as external dies for the concrete pouring of the connecting sections, and grout holes and weeping holes are reserved in the external dies. According to the connecting technology, requirements on the strength, the rigidity and the stability of the lifted bridge piers which are lifted can be met.

Description

technical field [0001] The invention relates to a bridge pier connection technology, which belongs to the field of civil engineering bridge reconstruction engineering. Background technique [0002] With the rapid development of my country's transportation industry, the operating capacity of vehicles is also increasing, and their operating heights are also increasing accordingly. This makes the clear height of a considerable number of over-the-line bridges and channel bridges unable to meet the needs of the normal operation of the under-bridge lines. Therefore, in order to ensure the safety of the cross-line bridge and the operation function of the line under the bridge, the clear height under the bridge of this part of the bridge must be increased. The synchronous jacking technology of the bridge as a whole is a new construction technology that emerged under this background. The advantages of the overall synchronous jacking technology of the bridge: less interference to the ...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing synchronous jacking technology for the whole bridge, after the bridge is jacked up, there are often problems at the connecting section between the new column and the original column, which leads to a slowdown of the entire construction progress.

Images