Effect of Pile Soil Structure Interaction on the Input Ground Motion for BaseSurface of High-rise Building in Shanghai

摘要

High-rise buildings in Shanghai are prone to be impacted by great earthquake in Taiwan and South of theYellow Sea, China. In this paper, the effect of soil and pile-supported high-rise building interaction isinvestigated by using an integral analysis method. Firstly, the software program of FLUSH wasredeveloped, replacing its consistent boundary with decoupling transmitting boundary. Secondly, based onthe design ground motion level of base rock for exceedance probability 63.2, 10 and 3 percent in 50 yearsconsidering the effect of soil nonlinear property using an equivalent linerization model and tectonicearthquake background in area of Shanghai, which taking input ground motion with variable frequencycontents induced by near-field earthquake, right-beneath city type earthquake and far-field earthquake onbase rock surface, the effect of pile-soil-structure interaction on the input ground motion for base surfaceof high-rise building in shanghai, which has thick and soft soils, is analyzed in details. Finally, someuseful results for structure design are obtained.