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在地震力作用下高架桥梁上轨道车辆的动态分析与安全性研究

, PP. 153-159

Keywords: 地震力,轨道车辆,高架桥梁,脱轨系数

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Abstract:

本文将轨道车辆系统仿真成由车厢、转向架及轮轴所组成.车厢与转向架间有次悬吊系统,转向架与轮轴间则有主悬吊系统.数学模型的推导将考虑车辆横向、垂向、翻滚及摇摆方向的运动,将车辆仿真成三维具16个自由度的系统.本研究将探讨行驶高架桥梁的轨道车辆受地震激振时的响应和安全性,结果显示,移轨力及脱轨系数会随着地表加速度的增加而增加,而轨道不平整度及速度参数对脱轨系数及移轨力的影响不大.

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