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Recovery testing of self-centering steel-timber hybrid beam-column connections
Highlights The recovery performance of the self-centering steel-timber hybrid beam-column connections was investigated through the recovery testing. A quantitative evaluation on hybrid connections’ competence in recovering their stiffness, moment capacity, ability in dissipating energy and re-centering, and the control on the loss of the post-tensioning force, was conducted. The effects of three variables, including the initial post-tensioning force, energy dissipator types, and key parameters of dampers, on connections’ recovery performance were compared.
Abstract A self-centering steel-timber hybrid beam-column connection design was proposed to improve performance of conventional self-centering timber beam-column connections. The proposed connection utilized a steel-timber composite column to prevent the wood material from being compressed perpendicular to the grain. In this paper, the recovery performance of the hybrid connection was experimentally investigated. Six specimens were prepared for the recovery testing. Three experimental variables, including the initial post-tensioning force, energy dissipator types (sliding friction and metallic yielding), and key parameters of dampers, were considered. After the first loading, the specimens reached their ultimate performance with damage. Then specimens were repaired and loaded for the second time. Five recovery indexes were calculated to quantitatively evaluate the recovery performance of hybrid connections. The effects of different variables on the recovery ability of hybrid connections were explored.
Recovery testing of self-centering steel-timber hybrid beam-column connections
Highlights The recovery performance of the self-centering steel-timber hybrid beam-column connections was investigated through the recovery testing. A quantitative evaluation on hybrid connections’ competence in recovering their stiffness, moment capacity, ability in dissipating energy and re-centering, and the control on the loss of the post-tensioning force, was conducted. The effects of three variables, including the initial post-tensioning force, energy dissipator types, and key parameters of dampers, on connections’ recovery performance were compared.
Abstract A self-centering steel-timber hybrid beam-column connection design was proposed to improve performance of conventional self-centering timber beam-column connections. The proposed connection utilized a steel-timber composite column to prevent the wood material from being compressed perpendicular to the grain. In this paper, the recovery performance of the hybrid connection was experimentally investigated. Six specimens were prepared for the recovery testing. Three experimental variables, including the initial post-tensioning force, energy dissipator types (sliding friction and metallic yielding), and key parameters of dampers, were considered. After the first loading, the specimens reached their ultimate performance with damage. Then specimens were repaired and loaded for the second time. Five recovery indexes were calculated to quantitatively evaluate the recovery performance of hybrid connections. The effects of different variables on the recovery ability of hybrid connections were explored.
Recovery testing of self-centering steel-timber hybrid beam-column connections
Chen, Fei (author) / He, Minjuan (author) / Li, Minghao (author) / Liu, Jingjing (author) / Shu, Zhan (author) / Li, Zheng (author)
2022-12-12
Article (Journal)
Electronic Resource
English
Self-centering connection , Post-tensioning , Steel-timber hybrid connection , Hysteretic performance , Recovery testing , PT , post-tensioned , LVL , laminated veneer lumber , STS , self-tapping screw , GLT , glued laminated timber , GiR , glued-in rod , BRB , buckling restrained brace , RBS , reduced beam section , CLT , cross-laminated timber , NAO , non-asbestos organic , LC , load cell , LVDT , linear voltage displacement transducer , CFRP , carbon fiber reinforced polymer
Behaviour of hybrid timber beam-to-tubular steel column moment connections
| Online Contents | 2016