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研究目的:城市轨道交通工程(本文主要指地铁)停车线两端与正线连接时,一般采用单开道岔,这对缩短车站长度,减小施工难度不利。因此,研发出适合于城市轨道交通工程特点的特殊道岔,包括对称三开道岔和对称道岔两种类型。本文以对称三开道岔为例加以阐述。研究结论:经过研究论证,对称三开道岔设计参数选用合理,结构强度可靠,符合轨道交通工程运营特点。对称三开道岔不仅安全可靠,而且可有效缩短有停车线车站的开挖长度,对节省工程投资、降低工程风险、减少施工难度极为有利。可在城市轨道交通工程中推广应用。
Research purposes: Urban rail transit project (mainly refers to the subway) parking line at both ends when connected with the main line, the general use of single switch, which shortens the station length, reducing the construction of the adverse. Therefore, we have developed a special turnout suitable for the characteristics of urban rail transit projects, including two types of symmetrical three-way turnouts and symmetrical turnouts. In this paper, symmetrical three-turnout as an example to be described. Research conclusions: After research and demonstration, the design parameters of the symmetrical three-turnout are reasonable and the structural strength is reliable, which is in line with the operational characteristics of the rail transit project. The symmetrical three-turnout is not only safe and reliable, but also can effectively shorten the excavation length of the stop line station, which is very beneficial to save project investment, reduce project risk and reduce construction difficulty. Can be applied in urban rail transit projects.