Nonlinear analysis of seismic behavior of dry connection joints for prefabricated steel reinforced concrete
1. School of Civil Engineering, Qingdao University of Technology, Qingdao, Shandong 266033, China; 2. College of Architecture and Urban Planning, Qingdao University of Technology, Qingdao, Shandong 266033, China
Abstract：To connect steel reinforced concrete column with steel beam reliably by simple and effective dry connection method, a new type of prefabricated steel reinforced concrete composite joint was proposed with energy-bearing, high efficiency, energy-saving and environmental protection. The beam-to-column joints with three different connection modes of welding connection, bolted connection and bolted-welded hybrid connection between joint core module and steel beam were investigated. The load-displacement hysteretic curves, the skeleton curves and the ductility and energy dissipation coefficients of the new joint were obtained by ABAQUS. The results show that the hysteretic curves of the new joint specimens with different connections are full. The ultimate bearing capacities of welded joints, bolted joints and bolted-welded hybrid joints are 241.7, 187.1 and 198.6 kN, respectively, which have stable strength and stiffness degradation performance. The ductility coefficients of the joints are respective 6.02, 8.24 and 4.25, and the equivalent viscous damping coefficients are respective 0.28, 0.28 and 0.35, which meet the requirements of seismic performance limits. The joint specimens with three connection modes have good deformation and energy dissipation capability with good bearing capacity and seismic performance.
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2019, Vol. 40 
