| 铁路载荷对土质边坡的扰动 |
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| 引用本文： | 张友葩,高永涛,吴顺川.铁路载荷对土质边坡的扰动[J].交通运输工程学报,2004,4(1):38-42. |
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| 作者姓名： | 张友葩 高永涛 吴顺川 |
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| 作者单位： | 北京科技大学,土木与环境工程学院,北京,100083;北京科技大学,土木与环境工程学院,北京,100083;北京科技大学,土木与环境工程学院,北京,100083 |
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| 基金项目： | 山东省科技攻关项目(321008) |
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| 摘 要： | 利用LUSAS有限元计算程序对动载荷下铁路整体结构的本征值进行了分析, 得出结构的固有振动频率和时程曲线。参照本征值的分析结果, 结合某铁路干线土质边坡的工程实例, 利用有限差分的数值分析方法, 对列车动载荷下, 对周围土质边坡的扰动情况进行了分析。结果表明, 作用于坡底的铁路载荷对边坡的扰动区域集中在轨道中心3m以内, 随着动载时间的增加, 扰动区域会逐渐扩大。
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| 关 键 词： | 铁道工程 动载荷 土质边坡 扰动 数值分析 |
| 文章编号： | 1671-1637(2004)01-0038-05 |
| 收稿时间： | 2003-09-25 |
| 修稿时间： | 2003年9月25日 |
Disturbing of soil masses slope under railway loading |
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| ZHANG You-pa,GAO Yong-tao,WU Shun-chuan.Disturbing of soil masses slope under railway loading[J].Journal of Traffic and Transportation Engineering,2004,4(1):38-42. |
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| Authors: | ZHANG You-pa GAO Yong-tao WU Shun-chuan |
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| Institution: | School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The eigenvalue of railway system was analyzed by using LUSAS FEA. According to the analysis results, the eigen- frequency and the response of vertical displacement as well as the principle stress versus dynamic loading time were found. With an in-situ engineering case, a numerical model of soil masses slope under the railway dynamic loading was built. The results show that the disturbing is within 3 m from rail. With time going, the disturbing scope will be expanded. 2 tabs, 10 figs, 11 refs. |
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| Keywords: | railway engineering dynamic loading soil masses slope disturbing numerical analysis |
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