| 含软夹层的层状沉积河谷场地的地震动力响应分析 |
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| 引用本文： | 李伟华,赵成刚.含软夹层的层状沉积河谷场地的地震动力响应分析[J].岩土力学,2009,30(1):45-51. |
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| 作者姓名： | 李伟华 赵成刚 |
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| 作者单位： | 北京交通大学,土建学院,北京,100044 |
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| 摘 要： | 把层状沉积河谷场地中的软夹层模拟为流体饱和多孔介质，结合已有的对单相弹性固体介质、流体饱和多孔介质进行动力反应分析的显式有限元方法，建立了既能描述沉积河谷谷底的软土场地（用流体饱和多孔介质描述），又能描述河谷周边山体（用单相弹性介质描述）的计算模型，并利用该方法分析了研究在P波入射下软夹层厚度以及软夹层的刚度等因素对层状沉积谷场地地震动力响应的影响。
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| 关 键 词： | 层状沉积河谷场地 软夹层 动力响应分析 显式有限元法 |
| 收稿时间： | 2007-10-23 |
Analysis of seismic dynamic response of layered alluvial valleys with soft interlayer |
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| LI Wei-hua,ZHAO Cheng-gang.Analysis of seismic dynamic response of layered alluvial valleys with soft interlayer[J].Rock and Soil Mechanics,2009,30(1):45-51. |
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| Authors: | LI Wei-hua ZHAO Cheng-gang |
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| Institution: | School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | An explicit finite element method to analyze the surface motion of layered alluvial valleys with soft interlayer is developed based on the numerical simulation of the continuous conditions on the boundaries between fluid saturated porous medium and elastic single-phase medium. The soft interlayer of layered alluvial valleys is modeled as saturated porous medium. Numerical results are provided to illustrate the effect of the thickness and stiffness of the soft interlayer on seismic dynamic response of layered alluvial valleys with soft interlayer. |
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| Keywords: | layered alluvial valleys soft interlayer dynamic response analysis explicit finite element method |
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