Impact of corrosion on the seismic response of pile-supported wharves
As one of the most used wharf structures in port engineering,the pile-supported wharf is not only subject to seismic load in its service life but also suffers from long-term chloride ion erosion due to the complex environment.This process leads to the continuous degradation of structural materials and reduces the seismic performance of the structure.To investigate the seis-mic response of pile-supported wharves after corrosion,this study explores the degradation law of reinforcement and concrete materials on the basis of the mechanism underlying reinforcement cor-rosion.A two-dimensional finite element model of a pile-supported wharf was established using the open-source computational platform OpenSees,and the seismic response of the pile-supported wharf after corrosion was discussed.The model considered the effect of corrosion.Seismic response results show that(1)the corrosion of the pile foundation reduces the displacement of the wharf deck,which exerts an earthquake-mitigating effect to a certain extent,and(2)the cor-rosion of the pile foundation changes the distribution of internal forces in the lower wharf struc-ture,thus causing an evident change in internal force on the free section of the landside pile and increasing the potential hazard of the wharf structure.This study provides a valuable reference for the seismic response analysis of pile-supported wharves after corrosion.
chloride ion corrosionpile-supported wharfsoil-pile interactionseismic response
万方数据
维普
