Simplified Procedure for Estimating Earthquake-Induced Deviatoric Slope Displacements
Simplified Procedure for Estimating Earthquake-Induced Deviatoric Slope Displacements
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DOI：
10.1061/(asce)1090-0241(2007)133:4(381
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发表时间：
2007-04
影响因子：
3.9
通讯作者：
J. Bray;T. Travasarou
中科院分区：
文献类型：
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作者：
J. Bray;T. Travasarou
本文提出了一个简化的半经验预测关系式，用于估算地震引起的偏变形引起的永久位移。它利用一个非线性完全耦合粘滑滑块模型来捕捉土坝，自然边坡，压实填土，或城市固体废物填埋场的动态性能。在评估地震期间土壤/废物系统的可能性能时，不确定性的主要来源是输入地面运动。因此，包含688个记录的地面运动的综合数据库用于计算地震位移。一个地震位移模型的开发，捕捉系统的屈服系数（ky），其初始基本周期（Ts），和地面运动的频谱加速度在退化期间等于1.5 Ts的主要影响。该模型将“零”位移的概率（即，1cm）发生的“非零”位移的分布，使非常低的值的计算…
A simplified semiempirical predictive relationship for estimating permanent displacements due to earthquake-induced deviatoric deformations is presented. It utilizes a nonlinear fully coupled stick-slip sliding block model to capture the dynamic performance of an earth dam, natural slope, compacted earth fill, or municipal solid-waste landfill. The primary source of uncertainty in assessing the likely performance of an earth/waste system during an earthquake is the input ground motion. Hence, a comprehensive database containing 688 recorded ground motions is used to compute seismic displacements. A seismic displacement model is developed that captures the primary influence of the system’s yield coefficient ( ky ) , its initial fundamental period ( Ts ) , and the ground motion’s spectral acceleration at a degraded period equal to 1.5 Ts . The model separates the probability of “zero” displacement (i.e., ⩽1 cm ) occurring from the distribution of “nonzero” displacement, so that very low values of calculated...