A simplified multisupport response spectrum method

作     者：Ye, Jihong Zhang, Zhiqiang Liu, Xianming 

作者机构：Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education Southeast University Nanjing 210096 China China Architecture Design and Research Group Beijing 100044 China 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2012年第11卷第2期

页      面：243-256页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：Major Program of National Science Foundation of China Under Grant No.90715005 Program for New Century Excellent Talents in University Under Grant No. NCET-07-0186 Doctoral Fund of Ministry of Education of China Under Grant No.200802860007 

主　　题：multisupport excitation uniform excitation response spectrum method coherency coefficients simplification comparative study 

摘      要：A simplified multisupport response spectrum method is *** structural response is a sum of two components of a structure with a first natural period less than 2 *** first component is the pseudostatic response caused by the inconsistent motions of the structural supports,and the second is the structural dynamic response to ground motion *** method is formally consistent with the classical response spectrum method,and the effects of multisupport excitation are considered for any modal response spectrum or modal *** the seismic inputs at each support are the same,the support displacements caused by the pseudostatic response become rigid body *** response spectrum in the case of multisupport excitations then reduces to that for uniform *** other words,this multisupport response spectrum method is a modification and extension of the existing response spectrum method under uniform ***,most of the coherency coefficients in this formulation are simplified by approximating the ground motion excitation as white *** results indicate that this simplification can reduce the calculation time while maintaining ***,the internal forces obtained by the multisupport response spectrum method are compared with those produced by the traditional response spectrum method in two case studies of existing long-span *** the effects of inconsistent support displacements are not considered in the traditional response spectrum method,the values of internal forces near the supports are *** regions are important potential failure points and deserve special attention in the seismic design of reticulated structures.