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Experimental research on seismic damage of cross-shaped CFST column to steel beam joints
Highlights Special-shaped concrete-filled steel tubular column to steel beam joints. Various loading schemes. Seismic damage of joint panel zone. Damage evaluation.
Abstract The special-shaped (L-shaped, T-shaped and cross-shaped) concrete-filled steel tubular (CFST) columns have been applied in many building structures, and they are usually connected with either I-shaped or box steel beams. This paper presents an investigation on the seismic damage of the cross-shaped CFST column to I-shaped steel beam joints. Five specimens with a scale of 1/2 were performed and tested under various loading schemes. The failure pattern, load-displacement curves, energy dissipation capacity, cyclic strength degradation, the maximum principal strain of the joint panel zone, and beam-column rotation are analyzed. The experimental results reveal that the failure pattern of the joints is mainly the shear failure of the joint panel zone and fracture of the beam end. There is no noticeable pinch effect on the hysteretic curves, and the joints have good energy dissipation capacity with the equivalent viscous damping coefficient of 0.299–0.377. The shear bearing capacity improves with the growth of depth to width ratio. When the depth to width ratio exceeds the value of 3, the seismic damage of the joints develops more rapidly, and the joints are more prone to damage during the earthquake. The seismic damage of the joint panel zone web is severer than the joint panel zone limb during the loading. Based on the Park-Ang damage model, the seismic damage of specimens is analyzed. Furthermore, the parameter analysis was conducted based on the finite element analysis. The influence of axial compression ratio and the concrete strength was analyzed.
Experimental research on seismic damage of cross-shaped CFST column to steel beam joints
Highlights Special-shaped concrete-filled steel tubular column to steel beam joints. Various loading schemes. Seismic damage of joint panel zone. Damage evaluation.
Abstract The special-shaped (L-shaped, T-shaped and cross-shaped) concrete-filled steel tubular (CFST) columns have been applied in many building structures, and they are usually connected with either I-shaped or box steel beams. This paper presents an investigation on the seismic damage of the cross-shaped CFST column to I-shaped steel beam joints. Five specimens with a scale of 1/2 were performed and tested under various loading schemes. The failure pattern, load-displacement curves, energy dissipation capacity, cyclic strength degradation, the maximum principal strain of the joint panel zone, and beam-column rotation are analyzed. The experimental results reveal that the failure pattern of the joints is mainly the shear failure of the joint panel zone and fracture of the beam end. There is no noticeable pinch effect on the hysteretic curves, and the joints have good energy dissipation capacity with the equivalent viscous damping coefficient of 0.299–0.377. The shear bearing capacity improves with the growth of depth to width ratio. When the depth to width ratio exceeds the value of 3, the seismic damage of the joints develops more rapidly, and the joints are more prone to damage during the earthquake. The seismic damage of the joint panel zone web is severer than the joint panel zone limb during the loading. Based on the Park-Ang damage model, the seismic damage of specimens is analyzed. Furthermore, the parameter analysis was conducted based on the finite element analysis. The influence of axial compression ratio and the concrete strength was analyzed.
Experimental research on seismic damage of cross-shaped CFST column to steel beam joints
Li, Hechao (author) / Xue, Jianyang (author) / Chen, Xi (author) / Tu, Guangxu (author) / Lu, Xin (author) / Zhong, Ruibao (author)
Engineering Structures ; 256
2022-01-13
Article (Journal)
Electronic Resource
English
Research on damage of specially shaped CFST column-steel beam joints
| Elsevier | 2024
| British Library Conference Proceedings | 2012
| Trans Tech Publications | 2011