強震時における杭基礎構造物の非線形挙動

Abstract

The paper deals with the non-linear behavior of pile foundation during strong earthquakemotion. The finite element method considering dynamic separation and sliding at the contactsurface between footing, piles and ground is adopted.The influences of embedment of footing on the dynamic response of structures are examined.The effects of grouping of piles on the seismic response are discussed and compared withthose of to static load.The results indicate that the embedment of footing decreases the magnitude of responses, especially shear stress and bending moment of piles and that the dynamic response of groupof piles increases for increasing of number of piles.