引言在结构动力分析和断裂计算中,普遍把结构视为各向同性的弹性体或者是理想的弹性介质,而在实际中,无论是地基或结构,都不是理想的弹性介质,在地震作用下,呈现出较强的粘性性质。因此把结构或地基假定为粘弹性介质,比较符合实际情况,这对于粘弹性结构的抗震分析研究将具有非常重要的理论及工程意义。目前,将结构或地基视为粘弹性进行动力分析 Introduction In structural dynamic analysis and fracture calculation, the structure is generally regarded as an isotropic elastic body or an ideal elastic medium, but in practice, neither the foundation nor the structure is an ideal elastic medium. Under earthquake action , Showing a strong sticky nature. Therefore, assuming the structure or foundation as a viscoelastic medium, it is more in line with the actual situation, which will have very important theoretical and engineering significance for the seismic analysis of viscoelastic structures. Currently, the structure or foundation is considered viscoelastic for dynamic analysis