风和地震作用下高层建筑土-结构作用比较

根据考虑上部结构荷载相关性的近似频域方法，详细分析了各类参数（如上部结构刚度、结构阻尼、土体刚度、土体阻尼等）对土-结构相互作用效应的影响．此外，探究了在风荷载和地震作用下，土-结构作用效应对上部结构响应影响的异同．数值算例给出了带有群桩基础的实际高层结构的风、地震作用下的土-结构作用响应的比较．比较结果说明，风、地震作用下高层建筑土-结构作用效应对上部结构响应的影响规律可能是不一致的，而这主要与风、地震作用于土体结构耦合系统的位置以及风、地震作用的卓越频率有关．

A Comparative Study of Soil-Structure Interactions of Tall Buildings Subjected to Wind and Earthquake Excitations

A preliminary analysis is conducted with the approximate frequency-domain method to compare the soil-structure interactions of tall buildings subjected to wind loading and earthquake excita- tion, which takes various factors, such as the rigidity, damping, and natural period of the coupled soilstructure system, into account. One typical tall building structure is subsequently selected as the case study in the numerical example. The numerical results indicate the soil-structure-interaction effects upon the responses of the tall buildings subjected to wind loading may exhibit great disparities compared with those upon the tall building responses induced by eart.hquake.