A construction method for replacing plate bearings of rail transit with disc bearings

Abstract

The invention discloses a construction method for replacing a disc-type bearing with a rail transit plate-type bearing, which sequentially includes a preparation stage, a first jacking stage, a pad stone replacement stage and a second jacking stage; the preparation stage and the pad The construction of the stone replacement stage is completed in the non-skylight point, and the construction of the first jacking stage and the second jacking stage is completed in the skylight point; the first jacking stage and the second jacking stage The lifting stages all include the steps of releasing the upper restraint force, overall jacking, recovery of the upper restraint force, data collection after jacking, and disassembly and maintenance of the jacking system; Take out the plate support, and install the disc support during the overall jacking in the second jacking stage; this construction method adopts the method of "uninterrupted traffic, vertically separated piers, and horizontal synchronous jacking of beams" Replacing the support and making full use of train skylight points and non-skylight points for construction will have little impact on the operation of existing track lines.

Description

technical field [0001] The invention relates to the technical field of rail transit construction, in particular to a construction method for replacing a disc-type support with a plate-type support for rail transit. Background technique [0002] In recent years, my country's urban rail transit industry has developed rapidly, and the number of urban rail transit operating lines has continued to increase. Existing rail transit can be built underground, on the ground or on a viaduct; if it is built on a viaduct, the upper structure of the viaduct must be connected to the lower structure with supports to ensure that various loads of the upper structure are transferred to the piers and abutments, and It can adapt to the displacement (displacement and rotation angle) caused by factors such as live load, temperature change, and concrete shrinkage, so that the actual stress of the upper and lower structures conforms to the design calculation model. [0003] However, under a period o...

AI Technical Summary

Problems solved by technology

However, this construction method needs to complete the whole process of synchronous jacking, pad stone replacement, and support replacement in a complete cycle; however, rail transit needs to be carried out within the skylight point (do not exclude auxiliary work during the daytime construction), and a single skylight Due to the short time, it is impossible to complete the whole process of synchronous jacking, pad stone replacement, support replacement, etc. The traffic may be interrupted, which will inevitably affect the normal operation of the line during the construction process.

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