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A platform for research: civil engineering, architecture and urbanism
Seismic performance of blind-bolted joints for square steel tube columns under bending-shear
Abstract In this study, a plug-in plate blind-bolted joint and double-splint blind-bolted joint are proposed for square steel tube columns. The seismic performance of joints under bending-shear combination was studied via experiments and finite element simulations. Four test specimens of plug-in plate blind-bolted joint and double-splint blind-bolted joint were studied by varying the numbers of bolts used in the connection. Additionally, eleven joints with different thicknesses of the plug-in plate, the double-splint, and the column wall were compared via finite element simulation. The strength of the test specimens increased till the loading was stopped at 0.05 rad. This suggests that the specimens had good ductility and rotation ability. The effect of the number of bolts, thickness of the plug-in plate and double-splint on the rotational stiffness, slip resistance, ductility performance, energy dissipation capacity, ultimate load-bearing capacity, and yielding mechanism of the joint were analyzed. Additionally, simplified equations were derived for slip resistance and yield strength of the joints. The values obtained using these equations agreed well with that of the experiment and finite element analysis. Furthermore, four frames with the plug-in plate blind-bolted joint and double-splint blind-bolted joint for square steel tube columns were subjected to cyclic loads. Their seismic performance was found to be better than that of the frame without the column joint. The proposed blind-bolted joints can be used for splicing a column at mid-height.
Graphical abstract Display Omitted
Highlights A plug-in plate blind-bolted and a double-splints blind-bolted joint were proposed. Seismic performances of the joints under bending-shear combination were studied. Parameter analysis was performed for the seismic performance of the joint. Simplified equations for the slip and yield strength of the joints are derived. Seismic performance of frame with bolted joint was better than frame without joint.
Seismic performance of blind-bolted joints for square steel tube columns under bending-shear
Abstract In this study, a plug-in plate blind-bolted joint and double-splint blind-bolted joint are proposed for square steel tube columns. The seismic performance of joints under bending-shear combination was studied via experiments and finite element simulations. Four test specimens of plug-in plate blind-bolted joint and double-splint blind-bolted joint were studied by varying the numbers of bolts used in the connection. Additionally, eleven joints with different thicknesses of the plug-in plate, the double-splint, and the column wall were compared via finite element simulation. The strength of the test specimens increased till the loading was stopped at 0.05 rad. This suggests that the specimens had good ductility and rotation ability. The effect of the number of bolts, thickness of the plug-in plate and double-splint on the rotational stiffness, slip resistance, ductility performance, energy dissipation capacity, ultimate load-bearing capacity, and yielding mechanism of the joint were analyzed. Additionally, simplified equations were derived for slip resistance and yield strength of the joints. The values obtained using these equations agreed well with that of the experiment and finite element analysis. Furthermore, four frames with the plug-in plate blind-bolted joint and double-splint blind-bolted joint for square steel tube columns were subjected to cyclic loads. Their seismic performance was found to be better than that of the frame without the column joint. The proposed blind-bolted joints can be used for splicing a column at mid-height.
Graphical abstract Display Omitted
Highlights A plug-in plate blind-bolted and a double-splints blind-bolted joint were proposed. Seismic performances of the joints under bending-shear combination were studied. Parameter analysis was performed for the seismic performance of the joint. Simplified equations for the slip and yield strength of the joints are derived. Seismic performance of frame with bolted joint was better than frame without joint.
Seismic performance of blind-bolted joints for square steel tube columns under bending-shear
Liu, Xue-Chun (author) / Chen, Guan-Po (author) / Xu, Lu (author) / Yu, Cheng (author) / Jiang, Zi-qin (author)
2020-09-29
Article (Journal)
Electronic Resource
English
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