Mesoscopic investigation on seismic performance of corroded reinforced concrete columns

作     者：Jin Liu Li Yanxi Zhang Renbo Du Xiuli Jin Liu;Li Yanxi;Zhang Renbo;Du Xiuli

作者机构：Key Laboratory of Urban Security and Disaster Engineering of Ministry of EducationBeijing University of TechnologyBeijing 100024China 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2022年第21卷第4期

页      面：969-985页

核心收录：

学科分类：081405[工学-防灾减灾工程及防护工程] 08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：National Natural Science Foundation of China under Grant Nos.51822801 and 51978022 

主　　题：reinforcement corrosion reinforced concrete column meso-scale finite element analysis seismic behavior 

摘      要：In addition to the normal service loadings,engineering structures may be subjected to occasional loadings such as earthquakes,which may cause severe *** the steel rebar is corroded,the damage could be more *** investigate the seismic performance of corroded RC columns,a three-dimensional mesoscale finite element model was *** this approach,concrete was considered as a three-phase composite composed of aggregate,mortar matrix and interfacial transition zone(ITZ).The nonlinear spring were used to describe the bond slip between steel and *** degradation of the material properties of the steel rebar and cover concrete as well as the bonding performance due to corrosion were taken into *** rationality of the developed numerical analysis model was verified by the good agreement between the numerical results and the available experimental *** this basis,the effect of corrosion level,axial force ratio and shear-span ratio on the seismic performance of corroded RC columns,including lateral bearing capacity,ductility,and energy consumption,were explored and *** simulation results indicate that the mesoscopic method can consider the heterogeneity of concrete,to more realistically and reasonably reflect the destruction process of structures.