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《Journal of Vibration and Shock》 2015-04
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Structural impact response spectra based on precise time-integration method

YIN Jun-hong;LI Qing-ning;ZHANG Rui-jie;CHENG Mai-li;YAN Lei;SUN Jian-peng;HAN Chun;College of Civil Engineering,Xi'an University of Architecture and Technology;  
Collision is one of the main reasons leading to damage of structures under earthquake excitation,it is closely related to structures' dynamic characteristics and earthquake action. Response spectra for two adjacent impacting structures related to their dynamic parameters should be deduced to guide their aseismic design considering impact. Here,acceleration response spectra for impact between two adjacent structures were defined, the calculation formulas of pounding based on precise time-integration method were derived,and the response spectra were analyzed and discussed.The study results indicated that the precise time-integration method with high accuracy,unconditionally stable and improved efficiency is suitable for the computation of structural impact problems; acceleration responses of structures increase due to pounding,the responses of two adjacent structures with the same dynamic characteristics are different; to increase damping ratios of the two structures and the difference between the two ratios,and to set up enough large initial gap between the two structures can effectively reduce their impact responses.
【Fund】: 国家自然科学基金资助项目(51078306);国家自然科学基金资助项目(51408453);; 高等学校博士学科点专项科研基金资助项目(20106120110004);高等学校博士学科点专项科研基金资助项目(20136120120022)
【CateGory Index】: TU311.3
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