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前言凡考虑结构与地基相互作用影响的抗震设计,无论是采用直接动力法或反应谱法进行时,都需要计算结构与地基体系的阻尼比。因此,阻尼比的确定问题一直是人们很关注的问题。Jenninge和Veletsoe等人曾将等效单质点结构与地基三自由度体系在正弦激
Foreword When considering the impact of the interaction between the structure and the ground, the seismic design needs to calculate the damping ratio of the structure and the foundation system whenever the direct dynamic method or the response spectrum method is used. Therefore, the problem of determining the damping ratio has always been a matter of great concern to people. Jenninge and Veletsoe et al. used the sinusoidal excitation of the equivalent single-particle structure and the three-degree-of-freedom system.