Study on Selection of Joint Stiffness for a Controlled Rocking Reinforced Concrete Frame with Column-end-hinge Joints
Abstract
A Controlled Rocking Reinforced Concrete Frame with Column-end-hinge joints (CR-RCFC) is a new type of resilient structure. Firstly, the configuration of CR-RCFC joint was introduced. The ABAQUS software was used to establish the finite element model of the conventional RC frame (RCF) and CR-RCFC. The rationality of the finite element model of CR-RCFC was verified by shaking table test results. Ten ground motions were selected based on earthquake platform and seismic information and input into CR-RCFC model to simulate the natural frequencies and dynamic time-history responses of the structures with different joint stiffness ratios. Finally, the inter-story drift amplification coefficient α and the base earthquake-reduction coefficient β were defined, and the displacement responses and inter-story shear responses were selected as the control parameters for selecting the joint stiffness. Through the elasto-plastic time-history analysis, the peak inter-story drifts and peak inter-story shear forces of the structure under different ground motions were compared to analyze the effects of joint stiffness degradation on the coefficients α and β, and reasonable range of joint stiffness ratio was obtained.
Keywords: column-end-hinge joint, controlled rocking frame, joint stiffness, dynamic time-history response
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EL -SHEIKH M T，SAUSE R，PESSIKI S，et al. Seismic behavior and design of unbonded post-tensioned precast concrete frames[J]. PCI J，1999，44（3）:54—71.
MA X，DEIERLEIN G，EATHERTON M，et al. Large-scale shaking table test of steel braced frame with controlled rocking and energy dissipating fuses[C]//Proceedings of the 9th U.S. National and 10th Canadian Conference on Earthquake Engineering. Toronto，Canada， 2010：1248.
LU X L，CUI Y，LIU J J. Shaking table test of a self -centering reinforced concrete frame [J]. Journal of Building Structures， 2014，35（1）:19—26（. In Chinese）
LU L，LU X L，ZHU F B，et al. Experimental study on seismic performance of a controllable rocking reinforced concrete frame[C]// Proceedings of the Fifth International Conference on Advances in Experimental Structural Engineering.Taipei，China，2013：43.
LU L，JIANG L，LI H，et al. Shaking table tests for seismic performance of a controllable rocking reinforced concrete frame with column-end-hinge joints[J].Journal of Vibration and Shock， 2016，35（4）:193—198（. In Chinese）
LU L，LI H，LIU X，et al. Shaking table tests on seismic performance of controlled rocking reinforced concrete frame[J]. Journal of Building Structures，2016，37（3）:59—66（. In Chinese）
LU L，FAN Y，LIU L，et al. Research on the seismic performance of a controllable rocking RC frame [J]. Earthquake Engineering and Engineering Dynamics，2015，35（1）: 66—76（. In Chinese）
LU L，LIU X，CHEN J J，et al. Seismic performance of a controlled rocking reinforced concrete frame [J]. Advances in Structural Engineering，2017，20（1）:4—17.
LU L，LIU X，CHEN J J，et al. Seismic performance study on a rocking reinforced concrete frame with push -over analysis[J]. Earthquake Engineering and Engineering Dynamics，2015，35（2）: 124—131（. In Chinese）
LU L，ZHANG H H，DAI G X，et al. Numerical analysis on the seismic performance of controlled rocking reinforced concrete frame with column-end-hinge joints[J]. Journal of Building Structures， 2018，39（2）:54—60（In Chinese）
LU L，XUY C，DAIG X.Performance-based seismic design method of a controlled rocking reinforced concrete frame [J].China Civil Engineering Journal，2016，49（S）:137—142（. In Chinese）
FAN Y. Numerical analysis on the seismic performance of a column -end -hinge type controllable rocking reinforced concrete frame [D]. Shanghai: Research Institute of Structural Engineering and Disaster Reduction，Tongji University，2015:32—33. （In Chinese）
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