Response spectrum considering adjacent buildings collision

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (23) : 186-193.

YANG Yongqiang1,2, WANG Mengying1,2, XIN Xing1,2

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Abstract

In order to study the effect of pounding between adjacent buildings on their seismic response, adjacent buildings were simplified into adjacent single-degree-of-freedom systems and the concept of pounding response spectrum was proposed. Pounding response spectrum can reflect the impact of pounding on the seismic response of adjacent structures, and also includes the characteristics of ground motion. The pounding force and the seismic response of adjacent structures with different parameters are analyzed statistically in the elastic range under action of 273 ground motion records in high intensity area. The results show that when the mass of adjacent structures is the same, the smaller the mass, the smaller the pounding force and the larger the acceleration response. When the mass of adjacent structures is different, the reaction of structures with low mass is more affected by the pounding, and the greater the mass difference, the greater the impact. The effect of peak ground acceleration(PGA) and seismic joint width on the pounding spectrum is similar, that is, the larger the PGA is, the smaller the seismic joint width is, the larger the structural response is, and the vice versa. Under the action of ground motion in sites of class IV, the acceleration response amplification effect of adjacent structures pounding is the smallest, and the effect is similar under the action of ground motion in the other three types of sites.

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adjacent building / seismic pounding / single-degree-of-freedom system / pounding response spectrum

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YANG Yongqiang1, 2, WANG Mengying1, 2, XIN Xing1, 2. Response spectrum considering adjacent buildings collision[J]. Journal of Vibration and Shock, 2024, 43(23): 186-193

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