考虑腐蚀效应的高桩码头地震响应研究  

Impact of corrosion on the seismic response of pile-supported wharves

作　　者：王龙龙 苏雷 王建峰 凌贤长[1,2] WANG Longlong;SU Lei;WANG Jianfeng;LING Xianzhang(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,Shandong,China;School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,Heilongjiang,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《地震工程学报》2025年第1期122-132,共11页China Earthquake Engineering Journal

基　　金：国家自然科学基金(42072310,51808307)。

摘　　要：高桩码头作为港口工程最常用的码头结构型式之一,因其所处环境相对复杂,在使用寿命中除了会受到地震荷载,往往还会长期受到氯离子侵蚀,导致结构材料性能不断退化,进而降低结构的抗震性能。为了研究受腐蚀后高桩码头地震响应特性,以钢筋锈蚀机理为基础,探索钢筋及混凝土材料退化规律。基于开源数值计算平台OpenSees,建立考虑腐蚀效应的高桩码头二维有限元模型,研究腐蚀后高桩码头结构地震响应。地震响应结果表明:(1)桩基腐蚀减小了码头面板的位移,在一定程度上起到减震效果;(2)桩基腐蚀改变了下部码头结构内力分布,引起陆侧桩自由段内力明显变化,增大结构安全隐患。研究结果可为腐蚀后高桩码头结构地震响应分析提供有价值的参考与借鉴。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 seismic 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 corrosion.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 corrosion of the pile foundation changes the distribution of internal forces in the lower wharf structure,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.

关 键 词：氯离子腐蚀 高桩码头 桩-土相互作用 地震响应 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]