弹塑性结构的位移比谱

本文从单自由度体系弹塑性反应的计算研究人手,探讨了弹塑性结构最大位移反应与相应弹性结构的最大位移反应之间的关系,找出了有关规律。采用统计平均的方法,作出设计用的弹性位移谱及弹塑性位移比谱,从而可以在已知弹性位移的基础上,方便地求得弹塑性位移反应。本文还讨论了地面加速度峰值与结构屈服限变化对结构弹塑性最大位移反应的影响,找出了其间关系,从而使在计算弹塑性位移反应时,仅计算某一烈度区内的值即可,其他区域,可通过有关规则确定。

Displacement Ratio Spectrum of Elastoplastic Structures

This paper studies the relationship between the maximum displacement responses of elastoplastic structures and the corresponding elastic ones on the basis of a single degree of freedom systems. By using the statistical method, the elastic displacement spectrum and the elastoplastic displacement ratio spectrum for seismic design of structures have been worked out. Thus the elastoplastic displacement responses for a single degree of freedom systems can be calculated easily when the corresponding elastic displacement response is given.The effect of the peak ground accelerations and yield strengths of the structure on the maximum elastoplastic displacement responses has been discussed, and the relationship among them has been elucidated in this paper. When the elastoplastic displacement of a structure subjected to a certain intensity of earthquake is known, the results for other intensities can be determined through the rules given in this paper,