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Development and experimental investigation of hybrid precast concrete beam–column joints
Highlights A new type of hybrid energy dissipated beam–column joints is proposed for seismic regions. Five precast and monolithic joints are tested under reversed cyclic loading. The precast joints exhibit satisfactory strength, stiffness and energy dissipation capacity. The plastic hinge of hybrid energy dissipated connections is developed outside the joint region. Combining double flange cover plates with SFC significantly improve the seismic performance.
Abstract In this study, an innovative type of hybrid beam–column joint using energy dissipated connection plates and I–shaped steel connectors to connect beams and columns was developed. Five interior beam–column specimens including a monolithic specimen and four hybrid precast joints, were tested under reversed cyclic loading to evaluate the seismic behavior of the connections. Test variables were the hybrid connection forms, flange cover plate, and steel fiber concrete usage. During the test, the hysteresis curves and cracking patterns were recorded. The seismic indicators, such as stiffness degradation, strength, energy dissipation, and ductility were determined. The test results revealed that the hybrid joint with the energy dissipated connection plates and steel fiber concrete failed in a typical flexural mode, exhibited stable hysteretic responses, and showed satisfactory seismic performance. The strength and cumulative energy dissipation of the proposed joint were higher by 46.6% and 230.9%, respectively, when compared with the monolithic specimen. The proposed hybrid connection could effectively transfer the plastic hinges to the connection region, reduce the damage and mitigate the stiffness deterioration due to the energy dissipated connection plates and the tensile deformability of the steel fiber. Therefore, the hybrid beam–column joints had superior performance to resist seismic loading. The developed seismic beam–column joints give a viable alternative for the precast concrete moment–resisting frames due to easy construction.
Development and experimental investigation of hybrid precast concrete beam–column joints
Highlights A new type of hybrid energy dissipated beam–column joints is proposed for seismic regions. Five precast and monolithic joints are tested under reversed cyclic loading. The precast joints exhibit satisfactory strength, stiffness and energy dissipation capacity. The plastic hinge of hybrid energy dissipated connections is developed outside the joint region. Combining double flange cover plates with SFC significantly improve the seismic performance.
Abstract In this study, an innovative type of hybrid beam–column joint using energy dissipated connection plates and I–shaped steel connectors to connect beams and columns was developed. Five interior beam–column specimens including a monolithic specimen and four hybrid precast joints, were tested under reversed cyclic loading to evaluate the seismic behavior of the connections. Test variables were the hybrid connection forms, flange cover plate, and steel fiber concrete usage. During the test, the hysteresis curves and cracking patterns were recorded. The seismic indicators, such as stiffness degradation, strength, energy dissipation, and ductility were determined. The test results revealed that the hybrid joint with the energy dissipated connection plates and steel fiber concrete failed in a typical flexural mode, exhibited stable hysteretic responses, and showed satisfactory seismic performance. The strength and cumulative energy dissipation of the proposed joint were higher by 46.6% and 230.9%, respectively, when compared with the monolithic specimen. The proposed hybrid connection could effectively transfer the plastic hinges to the connection region, reduce the damage and mitigate the stiffness deterioration due to the energy dissipated connection plates and the tensile deformability of the steel fiber. Therefore, the hybrid beam–column joints had superior performance to resist seismic loading. The developed seismic beam–column joints give a viable alternative for the precast concrete moment–resisting frames due to easy construction.
Development and experimental investigation of hybrid precast concrete beam–column joints
Zhang, Jianxin (author) / Ding, Chuanlin (author) / Rong, Xian (author) / Yang, Hongwei (author) / Li, Yanyan (author)
Engineering Structures ; 219
2020-06-02
Article (Journal)
Electronic Resource
English
| Taylor & Francis Verlag | 2022
Seismic Behavior of Precast Concrete Beam-Column Joints with Eccentricity
| British Library Conference Proceedings | 1995
Experimental Study on the Precast Seismic Beam-Column Joints
| British Library Conference Proceedings | 1995