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Analysis of the Contractive Behavior of Soil Deposits Subjected to Biaxial Excitation

机译:双轴激励下土壤沉积物的收缩行为分析

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This paper presents the analysis of the contractive behavior of saturated sand deposits subjected to biaxial seismic excitation. The analysis is performed on reduced scale centrifuge models of soil deposits. The models were instrumented with dense arrays of accelerometers and pore pressure transducers in order to capture the soil response under seismic excitation. Shear stresses and shear strains are estimated based on the recorded accelerations. A multi-yield surface constitutive model is used to infer the shear-volume behavior of the soil based on the acceleration and pore pressure response. The analysis offers insight into the coupled two-directional response of soil deposits.
机译:本文对双轴地震激励下饱和砂土的收缩行为进行了分析。该分析是在土壤沉积物的缩小规模的离心模型上进行的。这些模型装有密集的加速度计阵列和孔隙压力传感器,以捕获地震激励下的土壤响应。根据记录的加速度估算剪切应力和剪切应变。基于加速度和孔隙压力响应,使用多屈服表面本构模型来推断土壤的剪切体积行为。该分析提供了对土壤沉积物的双向耦合响应的深入了解。

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