Dynamic response of a monorail steel bridge under a moving train
Dynamic response of a monorail steel bridge under a moving train
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DOI：
10.1016/j.jsv.2005.12.028
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发表时间：
2006-07-11
影响因子：
4.7
通讯作者：
Kobayashi, Y.
中科院分区：
文献类型：
--
作者：
Lee, C. H.;Kawatani, M.;Kobayashi, Y.
本研究提出一种单轨桥梁与列车交通诱发振动之动态反应分析程序。单轨列车中的每节车厢都被理想化为一个15自由度的动态系统。采用单轨列车的拉格朗日方程和单轨桥梁的有限元模态分析方法，推导了三维单轨桥梁-列车相互作用系统的运动方程。单轨列车和桥梁的动力响应的分析结果与现场测试数据进行了比较，以验证所提出的分析程序的有效性，并发现正相关性的单轨桥梁响应的一个有趣的特点是，摇摆运动所造成的扭转行为由剪切中心的桥梁截面和列车荷载之间的偏心。(c)2006爱思唯尔有限公司保留所有权利。
This study proposes a dynamic response analysis procedure for traffic-induced vibration of a monorail bridge and train. Each car in the monorail train is idealized as a dynamic system of 15-degrees-of-freedom. The governing equations of motion for a three-dimensional monorail bridge-train interaction system are derived using Lagrange's formulation for monorail trains, and a finite-element method for modal analysis of monorail bridges. Analytical results on dynamic response of the monorail train and bridge are compared with field-test data in order to verify the validity of the proposed analysis procedure, and a positive correlation is found. An interesting feature of the monorail bridge response is that sway motion is caused by torsional behavior resulting from eccentricity between the shear center of the bridge section and the train load. (c) 2006 Elsevier Ltd. All rights reserved.