摘要
为了建立碳纤维布或外包钢套震损加固型钢混凝土柱的抗剪承载力计算式,基于碳纤维布或外包钢套加固型钢混凝土柱试验研究,分析了原柱材料的地震损伤以及混凝土受剪机理的差异,比较了不同抗剪模型建立的抗剪承载力计算值的差异性。经验证,计算值与其试验值吻合较好,说明基于强度退化的震损加固型钢混凝土柱抗剪承载力计算公式是可行的。基于GB50010-2010、ACI318-08和CSA-04三种不同抗剪模型建立的抗剪承载力计算值差异较大,说明震损加固柱中钢筋混凝土承担剪力的分析不容忽视。
In order to establish a formula for calculating the shear capacity of the seismic-damaged steel reinforced concrete(SRC)columns strengthened with CFRP or enveloped steel jacket,the earthquake damage of the original column material and the difference in shear mechanism of the concrete were analyzed based on laboratory experiments.Shear bearing capacities calculated from different shear models were compared.The comparison showed that the calculated results agreed well with the experimental results,indicating that the calculation formula of shear bearing capacity of SRC columns based on strength degradation was feasible.Based on GB 50010-2010,ACI318-08,and CSA-04,three different shear models were established,and the calculated values of shear capacity were quite different.This indicated that the analysis of the shear strength of RC in the strengthened seismic-damaged SRC column cannot be ignored.
作者
彭胜
许成祥
邓杰
杨曌
PENG Sheng;XU Chengxiang;DENG Jie;YANG Zhao(School of Urban Construction,Wuhan University of Science and Technology,Wuhan 430065,China)
出处
《防灾减灾工程学报》
CSCD
北大核心
2019年第1期158-163,共6页
Journal of Disaster Prevention and Mitigation Engineering
基金
国家自然科学基金项目(51478048)
湖北省自然科学基金(创新群体)项目(2015CFA029)资助
关键词
型钢混凝土柱
地震损伤
外包钢套
强度退化
抗剪承载力
steel reinforced concrete (SRC) columns
earthquake damage
enveloped steel jacket
strength degradation
shear bearing capacity
