| P波作用下埋地管道的相互作用动力分析 |
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| 引用本文： | 王铁成,王卉.P波作用下埋地管道的相互作用动力分析[J].地震工程与工程振动,2009,29(4). |
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| 作者姓名： | 王铁成 王卉 |
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| 作者单位： | 1. 天津大学,建筑工程学院,天津,300072;天津市土木工程结构及新材料重点实验室,天津,300072
2. 天津大学,建筑工程学院,天津,300072 |
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| 摘 要： | 建立了波动理论计算公式,给出了地下管道在平面P 波作用下动力响应问题的解析近似解答.对地下多管道体系的动力相互作用进行了分析.结果表明:当埋地管道之间的距离较近时,管道之间的波往复反射作用增强,相互作用明显,动应力集中具有显著的放大效应;随着管道中心距离的增加,动应力集中峰值振荡逐渐平稳;当中心距达到约100倍的管道内径时,相互作用消失,结果退化为单个管道的结果.
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| 关 键 词： | 埋地管道 P波 相互作用 动应力集中 |
Dynamic analysis of interactive underground pipes impacted by P-waves |
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| WANG Tiecheng,WANG Hui.Dynamic analysis of interactive underground pipes impacted by P-waves[J].Earthquake Engineering and Engineering Vibration,2009,29(4). |
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| Authors: | WANG Tiecheng WANG Hui |
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| Institution: | WANG Tiecheng1,2,WANG Hui1 (1.School of Civil Engineering,Tianjin University,Tianjin 300072,China,2.Tianjin Key Laboratory of Civil Engineering Structure , New Materials,China) |
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| Abstract: | Dynamic responses of underground pipes were analyzed by wave theory formula.The analytical solution was obtained to study the interaction between pipes impacted by incident P-waves.It is shown from the computed results that the peak values of dynamic stress concentration are magnified greatly at close distances by to-and-fro wave reflections and calm down with farther distances of pipes.When the center distances are greater than nearly 100 times the inner radius of the pipe,the interaction between pipes is ... |
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| Keywords: | underground pipes P-waves interaction dynamic stress concentration |
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