成层地基土在列车运行时的振动响应分析

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英文篇名：The analysis of dynamic response of stratum base induced by high speed train loads 中文刊名：中国水运(理论版) 英文刊名：China Water Transport 作者：胡勇 ; 肖先波 英文作者：Hu Yong Xiao Xianbo 中文关键词：成层地基 ; 傅立叶变换 ; 离散波数法 英文关键词：Stratum Base The Fourier Transform Discrete Wave Number Method 出版日期：2006-11-20 机构：湖州职业技术学院建筑工程技术与管理研究所, 年：2006 期：11 出版单位：中国水运(理论版)

摘要

以列车运行时的轨道-地基系统为对象,将轨道-地基系统简化为半无限地基及成层地基上的弹性地基梁模型,基于离散波数法推导了轨道和地基土的位移函数计算公式,并考虑了轨道和地基协同作用时的影响。比较了轨道、荷载自振频率、荷载移动速度、地基土模型等不同因素对地基土变形的影响,得到了一些有益的结论。
The present paper has dealt with the dynamic response of track-ground system due to a moving load on the track.The track is modeled by Winkler beam.The ground is modeled by either a half-space or stratum on rigid base.First,the ground characteristic is invested in the frequency-wave number domain for the wave propagation.Secondly the loading on the ground through interaction with the track is evaluated.The findings will make the useful basis for predicting the case of train-induced vibration.

引文

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