强侧风下高重心轴箱内置城际动车组运行安全性分析

打开文本图片集

中图分类号：U270 文献标志码：A doi：10.3969/j.issn.1006-0316.2025.12.005

文章编号：1006-0316（2025）12-0030-09

Abstract ∵ In order to evaluate the operation safety of a certaindomestic built-in intercity EMU with high center of gravity under strong crosswind and analyze its main influencing factors，a multi-body dynamic model of four-group nonlinear train is established according to the actual dynamic parameters of the intercity EMU. According to the actual aerodynamic load coefcient，the aerodynamic force iscalculatedbythe formula，and the‘China hat’ wind load modelis applied to calculate the train operationsafety and bodytilting convergence of the EMU under the strong crosswind of 25m/s and 30m/s on the straight line and when the unbalanced centrifugal acceleration is applied to simulate a curve with a cant deficiency of 110mm ，andthe simulation resultsarecompared with those of the conventional intercityEMU.The resultsshow thatthe built-in intercity

EMU with high center of gravity has worse operation safety，larger body tilting angle and worse body tilting convergence under strong crosswind.Reducing the center of gravity of the train， improving the aerodynamic coefficient and installingan anti-rolling device at the end ofthe train can efectively improve the safety of train operation.The installation of anti-rolling device at theend of the vehicle can significantly promote the tilting convergence of the vehicle body.

Key words ： strong crosswind ; intercity train ; high center of gravity ; inner axle-box bogie ; safety

近些年我国铁路运输快速发展，铁道车辆在提升运输能力的同时，也更加注重环境保护、低噪声、低轮轨作用力、曲线通过安全性等[1]。（剩余6642字）