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| Mechanical characteristics of shear connectors under repeated loads |
| 1. School of Civil Engineering & Mechanics, Huazhong University of Science & Technology, Wuhan, Hubei 430074, China; 2. Shanxi Luqiao Construction Group Co., Ltd., Taiyuan, Shanxi 250001, China; 3. College of Civil Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China; 4. Jiangsu Transportation Institute Group Co., Ltd., Nanjing, Jiangsu 211112, China
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Abstract By the pushout tests with monotonic load and repeated load, the mechanical characteristics of bearing capacity, loadslip curve, ductility, initial stiffness, stiffness degradation and energy dissipation capacity were investigated for 12 specimens in 3 types of angle connectors, channel connectors and TPBL connectors. The results show that the ultimate bearing capacity and the initial stiffness of channel connectors are better than those of angle connectors and TPBL connectors. The initial stiffness of all specimens have slight difference between monotonic load and repeated load. With the increasing of load cycle, the stiffness of specimens keeps decreasing, and the stiffness degradation of channel connector is slight with degradation sequence of angle connector and TPBL connector. TPBL connector has the best energy dissipation capacity, and angle connector has the worst value. With the increasing of load cycle at the same load level, the energy dissipation capacity of specimens is decreased.
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2018, Vol. 39 
