The Seismic Reduction Analysis of Three Adjacent Structures

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (15) : 9-15.

LIU Liangkun1 , TAN Ping2 , YAN Wei-ming1, ZHOU Fulin1,2

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Abstract

An idea of the control among three adjacent structures attached to damping device is presented in this paper. The stochastic response formula has been formulated based on a single degree-of-freedom system model. Further, the formula of the multi-degree-of-freedom system have been deduced based on complex mode superposition method with the corresponding damping coefficient matrix, stiffness matrix, etc, constituted. Finally, the seismic reduction of various combination situations of the single degree-of-freedom system model are analyzed respectively as well as the general situation of multi-degree-of-freedom system. The simulation results show that the seismic reduction effectiveness for three adjacent structures and two adjacent structures are comparable, whereas the former still behave well even if the latter is failed to control themselves because of symmetry. In addition, three adjacent structures are still of favorable robustness and significant suppression for higher-order response peaks under random earthquake excitation.

Key words

adjacent structures / complex mode / symmetry / control / robustness

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LIU Liangkun1,TAN Ping2,YAN Wei-ming1, ZHOU Fulin1,2. The Seismic Reduction Analysis of Three Adjacent Structures[J]. Journal of Vibration and Shock, 2017, 36(15): 9-15

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