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Seismic behavior of diaphragm-through connections of concrete-filled square steel tubular columns and H-shaped steel beams |
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| Authors: | , Rong Bin , Chen Zhihua , Apostolos Fafitis , Miao Jikui |
| Institution: | 1. School of Civil Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Coast Civil Structure Safety(Tianjin University), Ministry of Education, Tianjin 300072, China;School of Civil Engineering, Xinjiang University, Urumqi 830046, China 2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;Key Laboratory of Coast Civil Structure Safety(Tianjin University), Ministry of Education, Tianjin 300072, China 3. Department of Civil and Environmental Engineering, Arizona State University, Tempe 85287, USA 4. School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan 250101, China |
| Abstract: | Based on the introductions of a type of diaphragm-through connection between concrete-filled square steel tubular columns (CFSSTCs) and H-shaped steel beams, a finite element model of the connection is developed and used to investigate the seismic behavior of the connection. The results of the finite element model are validated by a set of cyclic loading tests. The cyclic loading tests and the finite element analyses indicate that the failure mode of the suggested connections is plastic hinge at the beam with inelastic rotation angle exceeding 0.04 rad. The suggested connections have sufficient strength, plastic deformation and energy dissipation capacity to be used in composite moment frames as beam-to-column rigid connections. |
| Keywords: | concrete-filled square steel tubular column H-shaped steel beam diaphragm-through connection seismic behavior load transfer mechanism |
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