Replaceability evaluation method of shear link for RCS hybrid frame. (October 2021)

• Record Type: Journal Article
• Authors: Men, JinJie; Deng, DePing; Lan, Tao; Xiong, LiQuan; Ren, RuYue
• Is Part Of: Structures. Volume 33(2021)
• Page Start: 2085
• Page End: 2098
• Publication Date: 2021-10
• Subjects: RCS hybrid frame structure -- Shear link -- Replaceability -- Cyclic behaviour; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2021.05.076
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: A reinforced concrete column and steel beam (RCS) hybrid frame structure with replaceable members was proposed in this paper. Non-linear pushover analyses were conducted to investigate the overall mechanical performance of the proposed structural system. Based on the residual deformation of replaceable links after an earthquake, a method for evaluating the replaceability of members of the RCS hybrid frame was proposed. The acceptable residual inter-storey drift and residual rotation drift at the end of the link were adopted as the two indices in this method. Numerical models and full-scale experiments were performed to systematically investigate the stress and deformation of the entire section of the replaceable steel links. The residual deformation was shown to increase with an increase in the inter-storey drift ( θ ) and decrease with an increase in the length ratio. Then the control values of the acceptable residual deformation indices were determined through a statistical analysis of the residual deformation of links with different length ratios and link-column connection modes: when the residual inter-storey drift was less than 0.0048 rad and the residual rotation drift at the end of the links was less than 0.0074 rad, the link could be easily replaced. These findings can provide reference for similar structural designs.