摘要
折线型恢复力模型是地震弹塑性时程分析常用的本构关系,其拐点的处理直接影响结构地震响应的精度.将线性插值法用于拐点处理,并结合多自由度体系的特点,使拐点处理方法能满足结构地震响应程序计算的要求.采用一个多自由度层模型算例进行弹塑性时程分析,并将拐点处理与未作处理的结果进行对比,较系统地分析了拐点处理对结构地震响应的幅值、频率和相位等的影响.
The polyline force restoring model is commonly used in explaining the constitutive relation structure for the seismic elastic-plastic time history analysis , and the inflection point processing directly affects the accuracy of the structural seismic response .The linear interpolation method was used in the in-flection point processing , and the characteristics of the multi degree freedom system were combined , which enabled the inflection point processing method to meet the requirements for program calculation in the structural seismic response .It provides a multi degree freedom layer model for the elastic-plastic time history analysis , and compares the results of the inflection point processing with those when the inflection point is not processed .Eventually , it analyses systematically the influence of the inflection point process-ing on the amplitude , frequency and phase of the structural seismic response .
出处
《广东工业大学学报》
CAS
2014年第1期112-117,共6页
Journal of Guangdong University of Technology
关键词
恢复力模型
拐点处理
弹塑性时程分析
force restoring model
inflection point processing
elastic-plastic dynamic analysis
