Numerical Simulation of Seismic Response of Caisson Quay Walls on Liquefiable Soil

Abstract eng:
Engineers and researchers have reached a consensus to adopt a performance-based design of port and harbor structures in Japan after a hazard investigation of the 1995 Kobe earthquake. The critical success factor for implementing a performancebased earthquake-resistant design depends on the reliable estimation of permanent displacement after an earthquake. The non-linear explicit response history analysis (NERHA) is presently the most efficient method used to predict the soil– foundation–structure interaction response. This study aims to rigorously verify the NERHA using well-defined field measurements, existing numerical tools, and constitutive models. The Port Island site in Kobe provides intensive hazard investigation data, strong motion records of downhole seismic arrays, and sufficient engineering parameters of soil before the earthquake. The analysis result matches quite well with the field investigation records. The NERHA procedure presented in this paper can be used in further studies to explain and examine the effects of other factors on the seismic behavior of gravity quay walls lying on a liquefiable soil area.

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