Effect of Liquefaction Induced Lateral Spreading on Seismic Performance of Pile Foundations

Seismically active areas are vulnerable to liquefaction, and the influence of liquefaction on pile foundations is very severe. Study pile-supported buildings in liquefiable soils requires consideration soil-pile interaction evaluation resulting from movement soil surrounding pile. This paper presents results three-dimensional finite difference analyses conducted understand effect seismic performance piles groups embedded stratified deposits using numerical tool FLAC3D. A comparative study has been level ground sloping ground. The model consists a non-liquefiable, slightly cemented sand layer at top bottom Nevada between. subjected 1940 El Centro, 2001 Bhuj (India) earthquake motions, harmonic motion 0.3g acceleration. Parametric studies have carried out by changing slope 0° 10° effects group response. indicate that maximum bending moments occur boundaries between non-liquefiable layers, moment increases with an increase angle. presence cap prevents horizontal displacements level. Further, it also observed under excess those due lateral spreading. Doi: 10.28991/CEJ-SP2021-07-05 Full Text: PDF