Study on seismic damage of SRHSC frame columns  

作　　者：ZHENG ShanSuo WANG Bin LI Lei HOU PiJi WANG Wei 

机构地区：[1]Department of Civil Engineering, Xi＇an University of Architecture and Technology, Xi＇an 710055, China [2]Department of Civil and Architecture Engineering, Xi＇an Technological University, Xi＇an 710032, China

出　　处：《Science China(Technological Sciences)》2011年第11期2886-2895,共10页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 90815005, 50978218);Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20106120110003);the Educational Office of Shan'xi Province in China (Grant No.2010JK633)

摘　　要：The damage evolution in steel reinforced high strength concrete(SRHSC) frame columns was studied based on the test results of cyclic reversed loading experiment of 12 frame column specimens with various axial compression rations,stirrups ratios,steel rations and loading histories.The variation law of the ultimate bearing capacity,ultimate deformation and ultimate hysteretic energy dissipation of specimens under different loading protocols was obtained.The seismic damage characteristics,as well as strength and stiffness degradation,of SRHSC frame columns were analyzed.Based on the analysis of the nonlinear double parameters combination of deformation and energy,a damage model that can well reflect the mechanical characteristics of members subjected to a horizontal earthquake action was established by considering the effects of the number of the loading cycles on the ultimate resistance capacity(ultimate deformation and ultimate energy dissipation capacity) of members,and the loading history on damage,etc.According to the test results,the related parameters of the damage model were proposed.Finally,the damage model proposed was validated by the test results.Results indicated that the proposed damage model is theoretically more reasonable and can accurately describe the seismic damage evolution of the SRHSC frame columns.The results also can be used as a new theoretic reference for the establishment of damage-based earthquake-resistant design method of SRHSC members.

关 键 词：SRHSC frame columns experimental study damage analysis damage model model parameters 

分 类 号：TU375[建筑科学—结构工程] TU375.4