| 青藏铁路多年冻土区桥墩随机地震反应分析 |
| |
| 引用本文： | 陈兴冲,严松宏,高峰.青藏铁路多年冻土区桥墩随机地震反应分析[J].世界地震工程,2006,22(1):79-83. |
| |
| 作者姓名： | 陈兴冲 严松宏 高峰 |
| |
| 作者单位： | 兰州交通大学,甘肃,兰州,730070 |
| |
| 基金项目： | 铁道部基金项目(2001G004)，兰州交通大学“青蓝”人才工程基金资助计划资助 |
| |
| 摘 要： | 利用随机振动理论和动力分析的有限元方法,将场地地震动考虑为均值为零的高斯平稳随机过程,对青藏铁路多年冻土区典型桥墩进行了随机地震反应分析,计算了9度地震作用下桥墩随机地震响应的统计特性,分析了冻土层对桥墩地震反应的影响。研究结果表明,冻土层对桥墩地震反应具有显著影响。
|
| 关 键 词： | 桥梁 桥墩 冻土 地震反应 随机振动 有限元 |
| 文章编号： | 1007-6069(2006)01-0079-05 |
| 收稿时间： | 2005-08-16 |
| 修稿时间： | 2005-09-26 |
Stochastic earthquake response analysis of bridge piers in the permafrost regions of Qingzang railway |
| |
| CHEN Xing-chong,YAN Song-hong,GAO Feng.Stochastic earthquake response analysis of bridge piers in the permafrost regions of Qingzang railway[J].World Information On Earthquake Engineering,2006,22(1):79-83. |
| |
| Authors: | CHEN Xing-chong YAN Song-hong GAO Feng |
| |
| Institution: | Lanzhou Jiaotong University, Gansu, Lanzhou, 730070, China |
| |
| Abstract: | By using the theories of random vibration and the finite element method of dynamical analysis and regarding the earthquake ground motion as a Gauss stationary stochastic process,the stochastic earthquake responses of a typical bridge pier in the permafrost regions of Qingzang railway are analyzed.The maximum and mean values of the responses are calculated,and the effects of the frozen earth thickness on the earthquake responses of the pier are studied.The results obtained from an example are shown that the frozen earth thicknesses produce obvious effect on earthquake responses of the bridge pier. |
| |
| Keywords: | bridge bridge pier seismic response frozen earth stochastic vibration finite element |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
