福州大学学报（自然科学版）2025，Vol.53Issue(4)：447-453,7.DOI:10.7631/issn.1000-2243.24238
局部腐蚀钢筋混凝土变截面桥墩抗震性能分析
Seismic performance study of locally corroded reinforced concrete variable cross-section bridge piers
摘要
Abstract
In view of the fact that the piers in offshore bridges are easily affected by chloride ions and other factors,local corrosion often occurs in key parts,which leads to serious degradation of their seismic performance.Taking the rectangular variable cross-section pier of a bridge in Xiamen as the prototype,based on the principle of dimensional similarity,one local corrosion pier specimen and one uncorroded pier specimen were made according to the ratio of 1∶8.Among them,the corrosion speci-men simulates the local corrosion effect by reducing the cross-sectional area of the steel bar.Through the shaking table test,the acceleration response,displacement response and final failure mode of the pier were obtained and analyzed.The results show that the cracks of the uncorroded specimens appear in the plastic hinge area at the bottom of the pier,and the cracks run through the whole specimen,while the plastic hinge of the locally corroded specimens is transferred,and the cracks appear at about 30 cm and 40 cm from the bottom of the pier,that is,the preset simulated corrosion area.This study provides an important experimental basis for seismic performance evaluation and maintenance and reinforcement of bridges in offshore environment.关键词
桥墩局部腐蚀/振动台试验/塑性铰区/抗震性能Key words
local corrosion of piers/shaking table test/plastic hinge zone/seismic performance分类
建筑与水利引用本文复制引用
谷音,秦晨曦,黄斌,龚明子..局部腐蚀钢筋混凝土变截面桥墩抗震性能分析[J].福州大学学报（自然科学版）,2025,53(4):447-453,7.基金项目
国家自然科学基金资助项目(52278159) （52278159）
