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摘要:
Based on the shaking table test of the liquefiable soil-piles-superstructure system, the liquefaction process and seismic failure mode of the liquefiable site with an overlying non-liquefiable soil layer, as well as the instability or damage mechanism of a low pile cap-pile group-superstructure system are analyzed by a two-dimensional finite element model. The model considers the post-liquefaction shear deformation of sand, the interface models for the pile and cap with the liquefiable and non-liquefiable soil, and the interface model between the liquefiable and non-liquefiable soil to account for the discontinuity of interface deformation. The typical calculation results, including the excess pore pressures, accelerations, displacements of soil, and bending mo-ments of the piles, are compared with the experimental results to verify the developed models and reveal the effects of site liquefaction and the soil-structure dynamic interaction on the seismic responses and instability mechanisms of the piles-superstructure system.
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来源 :
STRUCTURES
ISSN: 2352-0124
年份: 2023
卷: 54
页码: 134-152
4 . 1 0 0
JCR@2022
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