ABSTRACT

An approach for estimation of scenario-based liquefaction probability with consideration of ground-motion randomness is introduced. It is based on a modified version of the cyclic stress liquefaction assessment procedure where the cyclic stress and cyclic resistance ratios are considered time dependent and ground-motion dependent. This makes it possible to estimate the probability of liquefaction for a given seismic scenario. The approach can be applied to a given site to screen out the issue of liquefaction if the estimated probability of liquefaction is lower or equal to a tolerable value. The proposed decision-making is demonstrated for two sites with liquefaction-susceptible soils.

摘要

介绍了一种考虑地面运动随机性的基于情景的液化概率估计方法。它基于循环应力液化评估程序的修改版本，其中循环应力和循环阻力比被认为是时间相关和地面运动相关的。这使得估计给定地震情景的液化概率成为可能。如果估计的液化概率低于或等于可容忍值，则该方法可以应用于给定站点以筛选出液化问题。建议的决策是针对两个具有易液化土壤的地点进行的。