Monolithic rail bed and turnout lifting support arrangement structure of subway short sleeper

Abstract

The invention discloses a monolithic rail bed and turnout lifting support arrangement structure of a subway short sleeper. The monolithic rail bed and turnout lifting support arrangement structure comprises point rails (1), frogs (2), guard rails (3) and rails (4). Specific rail lifting supports (5) are arranged below steel rails in overlapped sections of the point rails (1) and the rails (4), below the frogs (2) and below steel rails in overlapped sections of the guard rails (3) and the rails (4). Heightened rail lifting supports (6) are arranged below steel rails in joint sections of every two rails (4) between the point rails (1) and the frogs (2). Main-line track lifting supports (7) are arranged below steel rails of the rails (4) outside of the point rails (1) and the frogs (2). The monolithic rail bed and turnout lifting support arrangement structure has the advantages that three types of track lifting supports are designed to lift up the integrated rail bed, concrete buttresses in a buttress method are replaced, height can be adjusted optionally, elevation height of turnout rail tops can be well controlled, constructing quality for turnout pouring is improved, construction period of the turnout is shortened by 30-50%, and meanwhile the rail lifting supports are easy to dismantle and can be repeatedly used, so that construction cost is greatly saved.

Description

technical field [0001] The invention relates to a support configuration structure for supporting integral ballast bed switches. Background technique [0002] In the construction of integrated track bed turnouts with short sleepers in the subway, the common method in the past is to use the buttress method for construction, that is, to assemble the turnouts on site first, connect the short sleepers and buckle accessories, and use the track lifter to jack up the turnout connectors, according to the "every 2 pouring 1" Install the buttress formwork by pouring the buttress concrete first. When the strength of the buttress concrete reaches 75% of the design strength, remove the buttress formwork, and use the method of supporting pads at the bottom of the buttress to adjust the elevation of the entire turnout accurately. After the geometric size of the turnout reaches the standard Then pour the turnout integral track bed concrete. This method requires secondary pouring of concrete...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problems that the height of the pier is not easy to control and the construction period is long when the pier method is used in the construction of the turnout of the integral track bed of the subway short sleeper, a support structure for supporting the turnout as a whole is provided.

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