Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental investigation on earthquake-resilient steel beam-to-column joints with replaceable buckling-restrained fuses
Abstract A new seismic resilient steel beam-to-column joint using replaceable buckling-restrained plates for energy dissipation was proposed in this paper. Such a joint consists of a column tree and an interior beam segment connected on site through bolted steel plates located inside beam flanges. The steel plates are considered as structural fuses to attract inelastic damage and dissipate energy. Their potential buckling is restrained by intentionally designed C-shaped shear tabs, which are also used to connect the beam webs to transfer the beam shear. Thus, both stable strength and superior energy dissipation capacity can be guaranteed. Six cyclic tests were conducted to study the seismic behavior and post-earthquake repair performance. The results evidenced that this joint was able to develop a normalized cumulative plastic rotation of 550 to 1100 until failure. Fuse plates could be quickly replaced after testing and the repaired joint developed nearly identical seismic performance as the original one. The proposed new joint provides an alternative solution, which is both economical and effective, for seismic resilient steel structures.
Highlights Plastic damage could be effectively concentrated in the replaceable fuse plates. The repaired joint possessed similar seismic performance with the virgin one. Maximum story drift ratio that could be developed was believed to be at least 7%. FP-type fuse plate and stiffened shear tab were suggested in engineering practice. This joint had superior performance on low-cycle fatigue.
Experimental investigation on earthquake-resilient steel beam-to-column joints with replaceable buckling-restrained fuses
Abstract A new seismic resilient steel beam-to-column joint using replaceable buckling-restrained plates for energy dissipation was proposed in this paper. Such a joint consists of a column tree and an interior beam segment connected on site through bolted steel plates located inside beam flanges. The steel plates are considered as structural fuses to attract inelastic damage and dissipate energy. Their potential buckling is restrained by intentionally designed C-shaped shear tabs, which are also used to connect the beam webs to transfer the beam shear. Thus, both stable strength and superior energy dissipation capacity can be guaranteed. Six cyclic tests were conducted to study the seismic behavior and post-earthquake repair performance. The results evidenced that this joint was able to develop a normalized cumulative plastic rotation of 550 to 1100 until failure. Fuse plates could be quickly replaced after testing and the repaired joint developed nearly identical seismic performance as the original one. The proposed new joint provides an alternative solution, which is both economical and effective, for seismic resilient steel structures.
Highlights Plastic damage could be effectively concentrated in the replaceable fuse plates. The repaired joint possessed similar seismic performance with the virgin one. Maximum story drift ratio that could be developed was believed to be at least 7%. FP-type fuse plate and stiffened shear tab were suggested in engineering practice. This joint had superior performance on low-cycle fatigue.
Experimental investigation on earthquake-resilient steel beam-to-column joints with replaceable buckling-restrained fuses
Chen, Peng (Autor:in) / Pan, Jianrong (Autor:in) / Hu, Fangxin (Autor:in) / Wang, Zhan (Autor:in)
22.06.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Cyclic Testing of Earthquake-resilient Steel Joints with a Replaceable Buckling-restrained Link
| Taylor & Francis Verlag | 2022