地铁 9 号道岔侧向通过速度提升可行性研究
蔡文锋1汤铁兵2徐井芒3
Feasibility Study of No.9 Turnout Lateral Passing Speed Acceleration
CAI WenfengTANG TiebingXU Jingmang
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作者信息:1.中铁二院工程集团有限责任公司，610031，成都；
2.中铁山桥集团有限公司，066205，秦皇岛；
3.西南交通大学，610031，成都
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Affiliation:China Railway Eryuan Engineering Group Co.，Ltd.，610031，Chengdu，China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.06.016
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中图分类号/CLCN:U213.6
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栏目/Col:研究报告
摘要:
为提高地铁9号道岔侧向过岔能力，提出将9号道岔侧向通过速度提升至50km/h，为此设计了5种道岔平面线型方案。 基于车辆-道岔耦合动力学理论，分析不同的道岔平面线型方案对地铁车辆运行平稳性、安全性的影响。经方案比选可得：地铁9号道岔尖轨采用相离半切线型，尖轨尖端理论厚度增加至 2 mm，尖轨冲击角取0.014 1~0.015 3rad，既可提高尖轨的整体耐磨性，也可保证过岔较好的乘坐舒适性；导曲线半径采用 350 m，有利于降低列车经过导曲线 时未被平衡的离心加速度，提高列车过岔舒适性。
Abstracts:
In order to improve the turnout lateral passing capacity of No.9 metro turnout，five design schemes are put forward aiming to accelerate the speed to 50 km/h. Based on vehicle-turnout coupling dynamics theory，the influence of different plane alignment schemes on the running stability and safety of metro vehicle is analyzed. A scheme is selected through comparison，by adopting the half-tangent alignment，the switch rail end thickness is 2 mm，the impact angle is 0.0141~0.0153rad. This scheme could improve the wear resistance of the switch rail and guarantee the riding comfort，because the 350 m mediated curve is favorable for the reduction of centrifugal acceleration that is not balanced when the vehicle passes through the mediated curve，thus the turnout passing comfort is improved.
引文 / Ref:
蔡文锋，汤铁兵，徐井芒.地铁9号道岔侧向通过速度提升可行性研究[J].城市轨道交通研究，2019，22(06):72.
CAI Wenfeng，TANG Tiebing，XU Jingmang.Feasibility study of No.9 turnout lateral passing speed acceleration[J].Urban Mass Transit，2019，22(06)：72.
CAI Wenfeng，TANG Tiebing，XU Jingmang.Feasibility study of No.9 turnout lateral passing speed acceleration[J].Urban Mass Transit，2019，22(06)：72.
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