| 高速移动荷载作用下轨道系统的振动研究 |
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| 引用本文： | 谢伟平,于艳丽,姚春桥.高速移动荷载作用下轨道系统的振动研究[J].地震工程与工程振动,2002,22(2):85-90. |
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| 作者姓名： | 谢伟平 于艳丽 姚春桥 |
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| 作者单位： | 1. 武汉理工大学土木工程与建筑学院,湖北,武汉,430070
2. 武汉市轨道交通有限公司,湖北,武汉,430017 |
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| 基金项目： | 武汉市建设科技项目 ( 2 0 0 1 17) |
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| 摘 要： | 本文基于格林函数法，对移动荷载作用下的轨道系统的振动进行了研究，与文克尔梁横型进行了对比，这一方法可推广到高架桥的计算中，所得到的结论具有应用价值。
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| 关 键 词： | 格林函数 移动荷载 离散算法 Euler梁 文克尔梁横型 轨道系统 |
| 文章编号： | 1000-1301(2002)02-0085-06 |
Research on vibration of beam for moving load |
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| XIE Wei-ping ,?YU Yan-li ,YAO Chun-qiao.Research on vibration of beam for moving load[J].Earthquake Engineering and Engineering Vibration,2002,22(2):85-90. |
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| Authors: | XIE Wei-ping ?YU Yan-li YAO Chun-qiao |
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| Institution: | XIE Wei-ping 1,?YU Yan-li 1,YAO Chun-qiao 2 |
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| Abstract: | In this paper, we consider the contribution of wheel-axle pressure mechanism only, assuming that rails and wheels are ideally smooth and no carriage or wheel-axle vibrations are excited.According to this assumption a time domain integral representation is derived using the classic beam dynamics. In the integral representation, loads caused by wheels are modeled by moving loads. The moving loads and reaction caused by rail are discrete by stepwise constant functions in time domain. The calculation of load effects is simple, but the calculation of the effect of reacting force is complicated. The calculation of the vibration caused by reacting force is discussed in detail. |
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