Simplified Multi-Support Respone Spectrum Excitation Method for Space Truss Structure
Chen Daozheng(1),Liu Xianming(2),Ye Zhengqiang(3),Ye Jihong(4),Li Aiqun(4)
(1 College of Civil and Architectural Engineering, He Fei University of Tec hnology, He Fei 230009 China)
(2 China Architecture Design and Research Group，Bei Jing 100044 China)
(3 China Aeronautical Project and Design Institute，Bei Jing 100065 China)
4 (College of Civil Engineering, Southeast University, NanJing ,210096,China)

Abstract: Neglected the coupled relation between pseudo-static and dynamic response, a simplified multi-support response spectrum method is presented, where the structure response is divided into two parts, pseudo static response caused by inconsistent ground displacement, and structural dynamic response caused by ground motion acceleration. The dynamic response coincide formally with classical response spectrum, and the influence of multi-support is also considered. The parameter evaluation in multi-support response spectrum is simplified in virtue of seismic motion power spectrum density function and frequency response function. The results verify the flexibility and computing accuracy of this method.
Keywords: space coherency function, multi-support excitation, response spe ctrum method, dynamic response test.