Overturning and Derailment of Railway Vehicles by Lateral Track Movements

轨道横向移动引起的铁路车辆倾覆和脱轨

• 批准号: 01550358
• 负责人: KAWAKAMI Hideji
• 金额: $ 0.96万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550358/
• 关键词: Vibrations; Railway; Derailment; Rocking; Vehicles; Modeling; Models; Overturning; 耐震工学; 転覆; 振動実験; 危険度解析

This study investigates the safety and performance of railway vehicles excited by lateral track movements which could occur during large earthquakes or strong winds. Such studies have practical importance, especially for the safety of railway vehicles running at very high speeds on long-span suspension bridges, because these vehicles may be subject to levels of excitation that are highly amplified by the bridge. Two types of test models are constructed in this study, and the dynamic response of these models on horizontally vibrating tracks is investigated experimentally under both standing and running conditions. As a result, for the some excitation within a certain range of frequencies, two modes of vibration, i.e., rolling and rocking responses, are observed. A jump phenomenon between these two modes is recognized. The behaviors during rocking and overturning are then examined in detail. In order to explain the experimental results, two kinds of mathematical models are considered. For each model, the nonlinear differential equations of motion are developed, and their numerical solutions are obtained by high-speed computers. It is concluded that both analytical models are useful to explain the experimentally obtained results.

这项研究调查了在大地震或强风中可能发生的横向轨道运动对铁路车辆的安全性和性能的影响。这类研究具有实际意义，特别是对于大跨度悬索桥上高速运行的铁路车辆的安全，因为这些车辆可能受到桥梁高度放大的激励水平的影响。本文建立了两种试验模型，并对这两种模型在水平振动轨道上的动力响应进行了试验研究。结果表明，在一定的频率范围内，对于某些激励，可以观察到两种振动模式，即摇摆和摇摆响应。认识到这两种模式之间的跳跃现象。然后对摇摆和倾覆过程中的行为进行了详细分析。为了解释实验结果，考虑了两种数学模型。对于每个模型，建立了非线性运动微分方程，并用高速计算机求出了它们的数值解。结果表明，两种分析模型均能较好地解释实验结果。

项目成果

川上 英二: "Rocking Response of Railway Vehicles by Lateral Track Excitations" 埼玉大学工学部建設系研究報告. 20. (1990)

川上英二：“横向轨道激励引起的铁道车辆的摇摆响应”埼玉大学工学部建设部研究报告20。（1990）

川上 英二: "Rocking Response of Railway Vehicles by Lateral Track Excitations" 埼玉大学工学部建設系研究報告. 20. 33-46 (1990)

川上英二：《横向轨道激励下的铁道车辆的摇摆响应》埼玉大学工学部建设部研究报告。20. 33-46 (1990)

KAWAKAMI,H.: "Rocking Compliance Functions for Rigid Bases Allowed to Uplift" Journal of Geotechnical Engineering,ASCE. (1990)

KAWAKAMI,H.：“允许提升的刚性基础的摇摆柔度函数”岩土工程杂志，ASCE。

KAWAKAMI, H.: "Rocking Response of Railway Vehicles by Lateral Track Excitations" Research Report of Dept. Found. Eng. & Const. Eng., Saitama Uviv.Vol. 20,. 33-46 (1990)

KAWAKAMI, H.：“铁路车辆横向轨道激励的摇摆响应”部门研究报告发现。