Effects of spatial variation of soil properties on seismic performance of port structures

摘要: Abstract From past seismic events such as the 1995 Kobe (Hyogoken-Nanbu) and 2001 Nisqually earthquakes, it was found that liquefaction-induced lateral spread has caused significant damage to structures buildings bridges, in addition underground utility facilities like pipelines. In this respect, seaport are particularly vulnerable these liquefaction-related damages, because they usually constructed on poorly consolidated natural deposit or fills. This study investigates effect of liquefaction response caisson type quay walls. For purpose, 2D nonlinear dynamic analyses soil–structure system carried out with aid finite difference software, FLAC. The unique feature lies fact soil is idealized homogeneous non-Gaussian random field. A simulation algorithm then used generate a set digital realizations field sample. Each realization for analysis system. Repeating entire realizations, probabilistic nature characterized Monte Carlo sense. result based compared obtained under uniform assumption mean value property. comparison shows general model provides unconservative from due behavior It also consideration spatial variation can capture dispersion observed