A dynamic loading test for steel double-beam column joints in traditional style buildings with viscous damper
WU Zhanjing1,XUE Jianyang2,SUI Gong2
Author information+
1.School of Architecture Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2.School of Civil Engineering, Xi'an University of Architecture and Technology, Xi’an 710055, China
The technology of seismic energy dissipation was applied to steel traditional style buildings, and the carved angle brace was replaced by viscous damper.Three steel double-beam column joints in traditional style buildings were designed, which include two specimens with viscous dampers and one specimen without viscous damper, the scale model was 1 ∶2.6.Mechanical behaviors such as the load-displacement hysteretic loops, skeleton curve, ductility, energy dissipation capacity and rigidity degeneration of joints were analyzed by a dynamic cyclic loading test.The results indicate that the steel beam-column joints in antique buildings with installed viscous dampers have more plump hysteresis curves, and its energy dissipation capacity is obviously better than that of the comparing specimen.The ultimate load increase value is between 34% and 46%.The displacement ductility factor is between 1.79 and 1.96, showing that the viscous dampers have less effect on the ductility of specimens.The equivalent viscous damping coefficient of specimens with viscous damper is 1.1~1.5 times specimens without viscous damper, indicating that the viscous damper installed at the beam column joints has a good seismic performance.
WU Zhanjing1,XUE Jianyang2,SUI Gong2.
A dynamic loading test for steel double-beam column joints in traditional style buildings with viscous damper[J]. Journal of Vibration and Shock, 2020, 39(4): 199-206
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