| 大跨斜拉桥地震动最不利输入方向分析 |
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| 引用本文： | 王滔,郭恩栋,张丽娜,胡煜文.大跨斜拉桥地震动最不利输入方向分析[J].世界地震工程,2007,23(4):107-111. |
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| 作者姓名： | 王滔 郭恩栋 张丽娜 胡煜文 |
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| 作者单位： | 中国地震局工程力学研究所,黑龙江,哈尔滨,150080 |
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| 摘 要： | 对于复杂结构的地震反应分析，地震波的最不利输入方向对应着结构的最不利反应。通过一座大跨斜拉桥的具体实例分析，研究了地震动输入方向不同时结构反应的变化情况，结果表明：地震动输入最不利方向和结构本身以及所采用地震波均有关，沿轴向输入并不总是最不利输入方向，同时发现，地震波的长周期成分对大跨斜拉桥结构的地震响应有很大影响。
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| 关 键 词： | 斜拉桥 地震动 最不利输入方向 |
| 文章编号： | 1007-6069（2007）04-0107-05 |
| 收稿时间： | 2007-05-13 |
| 修稿时间： | 2007-09-21 |
The critical direction of earthquake input for dynamic analysis of a long span cable-stayed bridge |
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| WANG Tao,GUO Endong,ZHANG Lina,HU Yuwen.The critical direction of earthquake input for dynamic analysis of a long span cable-stayed bridge[J].World Information On Earthquake Engineering,2007,23(4):107-111. |
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| Authors: | WANG Tao GUO Endong ZHANG Lina HU Yuwen |
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| Abstract: | In dynamic analysis of a complicated structure, the critical direction of earthquake input is corresponding to the maximal response of the structure. Based on MIDAS software, the response analysis of a long span cable-stayed bridge under inputing earthquakes of different directions has been conducted, the calculating results show that both structural dynamic properties and the selected inputing earthquakes have effect on the critical direction of earthguakes inpating into the structure, and the long period components of ground motion should be considered in the response analysis of the long span cable-stayed bridge. |
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| Keywords: | Cable-stayed bridge seismic input critical direction |
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