Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Seismic performance of concrete-filled steel tubular column connections using blind bolts
Abstract In this study, a demountable connection that connects the upper and lower concrete-filled steel tubular columns with an inner sleeve section and blind bolts (referred to as Hollo-Bolts in this study) is proposed. The utilization of Hollo-Bolts allows them to be installed outside the steel tubes prior to the concrete casting and renders such connection to be readily dismantled after typical service loading. In order to study the seismic performance of the concrete-filled steel tubular column-column connection, six specimens were designed in the present study. The studied parameters included the axial load ratio, length of the inner sleeve, and location of the connection. The results demonstrated that the proposed connection exhibited good ductility performance, and the disassembly and reassembly of the connection after a service loading had no significant effect on their seismic performance. Additionally, the load-transfer mechanism of the concrete-filled steel tubular column-column connection was explored. Simplified formulae of anti-slip flexural bearing capacity of the connection were proposed, and the predicted values agreed well with the test results on the safe side.
Highlights Six specimens on demountable composite column connections were tested and reported. Failure modes and cyclic performance were investigated. Feasibility of reusing composite components were explored. Analytical models were proposed for design purposes.
Seismic performance of concrete-filled steel tubular column connections using blind bolts
Abstract In this study, a demountable connection that connects the upper and lower concrete-filled steel tubular columns with an inner sleeve section and blind bolts (referred to as Hollo-Bolts in this study) is proposed. The utilization of Hollo-Bolts allows them to be installed outside the steel tubes prior to the concrete casting and renders such connection to be readily dismantled after typical service loading. In order to study the seismic performance of the concrete-filled steel tubular column-column connection, six specimens were designed in the present study. The studied parameters included the axial load ratio, length of the inner sleeve, and location of the connection. The results demonstrated that the proposed connection exhibited good ductility performance, and the disassembly and reassembly of the connection after a service loading had no significant effect on their seismic performance. Additionally, the load-transfer mechanism of the concrete-filled steel tubular column-column connection was explored. Simplified formulae of anti-slip flexural bearing capacity of the connection were proposed, and the predicted values agreed well with the test results on the safe side.
Highlights Six specimens on demountable composite column connections were tested and reported. Failure modes and cyclic performance were investigated. Feasibility of reusing composite components were explored. Analytical models were proposed for design purposes.
Seismic performance of concrete-filled steel tubular column connections using blind bolts
Gan, Dan (Autor:in) / Zhang, Yaojun (Autor:in) / Zhou, Xuhong (Autor:in) / Ba, Ziyu (Autor:in) / Li, Dongxu (Autor:in) / Hou, Zhaoxin (Autor:in) / Uy, Brian (Autor:in)
07.04.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Seismic performance of steel beams to concrete-filled steel tubular column connections
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Behaviour of flush end plate connections to concrete-filled tubular columns with blind bolts
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