Analysis of the seismic behavior of CFRP-strengthened seismic-damaged composite steel-concrete frame joints

  • SCI-E
  • EI
作者: Xu, Chengxiang;Peng, Sheng;Liu, Xiaoqiang;Wang, Chenfei;Xu, Qiqi
通讯作者: Peng, Sheng(pe_sh@sina.com)
作者机构: School of Architectural Engineering, Weifang University of Science and Technology, Weifang, 262700, PR China
Wuhan Building Material Industry Design and Research Institute Co. Ltd, Wuhan, 430200, PR China
Department of Civil Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, PR China
通讯机构: Department of Civil Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan, China
语种: 英文
关键词: Carbon fiber reinforced polymer sheets - Cfrp reinforcements - Composite steel concrete - Experimental investigations - Seismic behavior - Seismic damage - Stiffness degradation - Ultimate bearing capacity
期刊: Journal of Building Engineering
ISSN: 2352-7102
年: 2020
卷: 28
页码: 101057-
基金类别: National Natural Science Foundation of China (CN)National Natural Science Foundation of China (NSFC) [51478048, 51678457]; Natural Science Foundation of Hubei Province (Innovation group) of China (CN) [2015CFA029]
摘要: An experimental investigation was conducted to examine the seismic behavior of three seismic-damaged composite steel-concrete frame joints strengthened with carbon fiber-reinforced polymer (CFRP) sheets, as well as of one original composite steel-concrete frame joint. Effects of the degree of seismic damage and the CFRP reinforcement on shear capacity, ductility, energy dissipation, and stiffness degradation were critically researched. Based on an existing code, an expression to predict the shear strength of seismic-damaged composite steel-concrete frame joints strengthened with CFRP is presented;the influence of the degree of seismic damage and amount of CFRP on the shear strength is considered in this expression. Results of the proposed expression and the test results were compared. The results revealed that the ultimate bearing capacity, ultimate displacement, and ductility of the specimens improved after CFRP reinforcement. There was good agreement between predicted results from the shear strength model and the test results with regard to the degree of seismic damage and amount of CFRP.<br/> &copy;2019

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Analysis of the seismic behavior of CFRP-strengthened seismic-damaged composite steel-concrete frame joints
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