| 多年冻土区桩基础桥墩随机地震反应分析 |
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| 引用本文： | 虞庐松,严松宏,陈兴冲,高峰. 多年冻土区桩基础桥墩随机地震反应分析[J]. 世界地震工程, 2007, 23(1): 12-16 |
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| 作者姓名： | 虞庐松 严松宏 陈兴冲 高峰 |
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| 作者单位： | 兰州交通大学,土木工程学院,甘肃,兰州,730070 |
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| 基金项目： | 铁道部科研项目;兰州交通大学校科研和教改项目 |
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| 摘 要： | 将随机振动理论、粘弹性边界条件的二维波动法以及结构动力分析有限元法结合起来，考虑场地地震动为零均值的高斯平稳随机过程，对青藏铁路多年冻土区桩基础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最大值的均值和均方差，分析了冻土层及桥墩高度对桥墩随机地震响应的影响。
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| 关 键 词： | 冻土工程 桥墩 桩基础 地震响应 随机振动 |
| 文章编号： | 1007-6069(2007)01-0012-05 |
| 修稿时间： | 2006-07-21 |
Stochastic earthquake response analysis of bridge piers with pile foundation in the permafrost regions |
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| YU Lu-song,YAN Song-hong,CHEN Xin-chong,GAO Feng. Stochastic earthquake response analysis of bridge piers with pile foundation in the permafrost regions[J]. World Information On Earthquake Engineering, 2007, 23(1): 12-16 |
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| Authors: | YU Lu-song YAN Song-hong CHEN Xin-chong GAO Feng |
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| Affiliation: | School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | Regarding the earthquake motion of ground as a Gauss stationary stochastic process, the stochastic earth- quake responses of a typical bridge pier in the permafrost regions of Qingzang Railway are analyzed by using the theory of random vibration and the two-dimensional wave equation analysis method and the dynamic element method, the maximum and mean value of the responses are calculated, and the effects of the frozen earth thickness and the pier height on the stochastic characteristics of the pier earthquake responses are studied. |
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| Keywords: | frozen earth engineering bridge piers earthquake responses pile foundation stochastic vibration |
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