| 渡口河大桥地震响应分析 |
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| 引用本文： | 刘俊,贺国京.渡口河大桥地震响应分析[J].世界地震工程,2007,23(4):143-147. |
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| 作者姓名： | 刘俊 贺国京 |
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| 作者单位： | 1. 铁道第五勘察设计院,桥梁分院,北京,102600
2. 中南林业科技大学,湖南,长沙,410004 |
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| 摘 要： | 渡口河大桥为在建宜万线上的一座高墩大跨度连续刚构桥，为了研究其地震响应特性，分别按桩土连续梁模式、桩土空间刚架模式来模拟桩土共同作用，建立了相应的空间有限元模型，采用数值模拟方法合成了桥址处地震动时程。研究比较了这两种模型和不考虑桩土作用模型按反应谱输入方式下结构的地震响应，并对地震竖向分量的影响、不同波速的行波效应进行了探讨。通过分析计算，得出了一些对实际工程有意义的结论。
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| 关 键 词： | 大跨度连续刚构桥 桩-土共同作用 反应谱 行波效应 |
| 文章编号： | 1007-6069（2007）04-0143-05 |
| 收稿时间： | 2007-02-23 |
| 修稿时间： | 2007-05-17 |
The seismic response analysis of the Dukouhe bridge |
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| LIU Jun,HE Guo-jing.The seismic response analysis of the Dukouhe bridge[J].World Information On Earthquake Engineering,2007,23(4):143-147. |
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| Authors: | LIU Jun HE Guo-jing |
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| Abstract: | The Dukouhe bridge being built which lies on Yiwan railway is a long span continuous rigid frame bridge with high piers. In order to study the seismic response characteristics of the bridge, two 3-D FEM models are built up by the continuous beam model and spatial rigid frame model with the pile-soil interaction respectively. The acceleration wave of inputing earthquake motion is obtained by adopting the numerical-simulation method. The results of seismic response obtained by time history method and response spectrum method for the two 3-D FEM models mentioned above and the results of seismic response for the model without consideration of the pile-soil interaction are compared, and the influence of the seismic vertical wave and the traveling wave with different wave velocities is also researched. Based on the results, some meaningful conclusions to the practical engineering are obtained. |
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| Keywords: | long span continuous rigid frame bridge pile-soil interaction response spectrum traveling wave effect |
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