Study on Seismic Behaviour of Frame-Core Tube Structure with Different Types of Coupling Beams

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 169-174.

YUAN Shicong 1 JIANG Huanjun 2,3

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Abstract

The influence of different types of coupling beams on seismic performance of frame core-tube structure was studied by the modal analysis, response spectrum analysis and time-history analysis of two RC frame-core tube structures with different types of coupling beams under different levels of earthquake ground motions with the aid of the structural analysis software PERFORM-3D. The effects of the type of coupling beams on the seismic performance of the structures were analyzed by comparing the performance parameters such as the structural dynamic characteristics, displacement and force responses of the structures, the dissipated energy and the structural damage of the structures under the rare earthquake. The study indicates that the energy-dissipation capacity of different type of coupling beams is considerably different, and the type of coupling beams has significant effect on the overall seismic performance of the structure. The input seismic energy is mostly dissipated by the flexure-dominant coupling beams so that the core tube itself has dual seismic defense lines. The seismic performance of the structure with the flexure-dominating coupling beams is better than that of the structure with shear-dominating coupling beams.

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flexure-dominating coupling beam / seismic performance / elasto-plastic dynamic analysis / PERFORM-3D

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YUAN Shicong 1 JIANG Huanjun 2,3 . Study on Seismic Behaviour of Frame-Core Tube Structure with Different Types of Coupling Beams[J]. Journal of Vibration and Shock, 2017, 36(12): 169-174

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