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首页> 外文期刊>Journal of Earthquake Engineering >Numerical Evaluation of Seismic Soil Pressures on Rigid Walls Fixed to the Bedrock
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Numerical Evaluation of Seismic Soil Pressures on Rigid Walls Fixed to the Bedrock

机译：固定在基岩上刚性墙的地震土压力数值评估

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摘要

Seismic soil pressures developed on a 7 m rigid retaining wall fixed to the bedrock are investigated using a finite element model that engages nonlinear soil intended materials available in OpenSees. This allows incorporation of the inelastic behavior of the soil and wave propagation effects in the soil-wall system seismic response. The nonlinear response of the soil was validated using the well-stablished, frequency-domain, linear-equivalent approach. An incremental dynamic analysis was implemented to comprehensively examine the effect of soil nonlinearity and input motion on the induced seismic pressures and to evaluate current code equations/methodologies at different levels of earthquake intensity. The results show that soil nonlinearity and seismic wave amplification may play an important role in the response of the soil-wall system. Therefore, methodologies that rely only on peak ground acceleration may introduce large bias on the estimated seismic pressures in scenarios where high nonlinearity and site amplification are expected.
机译：使用有限元模型研究了固定在基岩上的7 m刚性挡土墙上产生的地震土压力，该模型结合了OpenSees中可用的非线性土质材料。这允许将土壤的非弹性行为和波传播效应纳入土墙系统的地震响应中。使用完善的，频域，线性等效方法验证了土壤的非线性响应。进行了增量动力分析，以全面检查土壤非线性和输入运动对诱发地震压力的影响，并评估不同地震烈度下的当前代码方程/方法。结果表明，土壤非线性和地震波放大作用在土-墙系统的响应中可能起重要作用。因此，在期望高度非线性和现场放大的情况下，仅依赖于峰值地面加速度的方法可能会对估计的地震压力产生较大的偏差。

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