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Date of Publication:2022-10-09

Journal:地震工程学报

Issue:2

Page Number:410-414

ISSN No.:1000-0844

Abstract:The all-covered type of sheet-pile wharf is a new type of sheet-pile structure,and research into its seismic performance is important for its design and construction.In this study, based on the FEM-FDM soil coupling calculation platform,the cyclic elastic-plastic constitutive model is introduced.The FORTRAN dynamic programming software is used for saturated sandy soil liquefaction numerical analysis.This software can effectively simulate saturated sand under earthquake dynamic nonlinear and large deformation and can also simulate sand liquefaction flow at the barrier of the pile and the front wall.The results are:under the action of earthquakes,the excess pore water pressures of liquefiable soils increase and there is large deformation due to hori-zontal flow;the horizontal damage to the front wall is greater than the vertical damage.The maxi-mum shear wall is located in the seabed and before the wall at the junction.The barrier pile is the location of the maximum shear displacement parallel to the bottom of the front wall.The rod ten-sion in the back increases gradually,while that in front reduces gradually.Through the analysis of sheet-pile wharf disasters caused by seismic liquefaction,the results of this study provide a refer-ence for seismic and liquefaction resistance design.

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