Line rail symmetric turnout No 4.5 in urban rail transit engineering

Abstract

The invention provides a line symmetric turnout No. 4.5 in urban rail transit engineering, and the turnout is arrange on parking line rail in underground lines in the urban rail transit engineering. The structure of the symmetric turnout comprises a group of railroad switches, a group of frogs and connecting steel rails, wherein the group of railroad switches is connected with the group of frogs through the connecting steel rails so as to form a symmetric turnout comprising two side rails. The invention has the beneficial effects that the turnout can satisfy the safe running of subway and light rail vehicles between a main line and a stop line, meets relative technical standards and safety requirements of the urban rail transit engineering, highlights the advantages of safety, reliability, convenience in manufacture, laying, construction maintenance and protection and the like. By the adoption of the invention, turnout investment can be reduced, and the length of auxiliary lines can be shortened greatly, and thus civil work investment can be reduced greatly, construction difficulty can be lowered, and construction risk can be decreased.

Description

technical field [0001] The invention relates to a No. 4.5 symmetrical turnout of a line track in an urban rail transit project. Background technique [0002] Urban rail transit projects have developed rapidly in my country in recent years, and are mainly used for large-capacity urban passenger transportation, which is an effective means to improve traffic congestion in large cities. [0003] The problem of traffic congestion in my country's big cities is becoming more and more serious, and urban rail transit is being built one after another, such as Beijing, Shanghai, Guangzhou, Shenzhen, etc., which have begun to take shape. Some medium-sized cities such as Qingdao, Ningbo and Suzhou are under construction. Because each city independently raises funds, builds and manages independently, and lacks systematic research and development and unified management, some systems and equipment have problems that need to be improved and perfected. [0004] In the auxiliary line of urba...

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Problems solved by technology

[0005] At the position where the parking line or the access line in the urban rail transit project is connected with the main line, if the symmetrical turnouts of No. When the line is connected, it is necessary to set a set of reverse curves, which prolongs the connecting line and deteriorates the operating conditions of the line. It cannot shorten the length of the stop line or the access line. The line in the turnout area is long and the number of turnouts is large. , Civil construction investment and project risks are also relatively large, and project implementation is difficult

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