摘要
简单地叙述了目前高层建筑地震反应分析中常用的地震动输入方法，用相同的高层建筑和四种不同的场地组建成四个结构—场地一体化模型，通过对四种模型计算得到的场地地表反应、结构顶点水平运动、结构根部的等效输入相对入射波的传递函数的幅值谱和结构单元内力的比较，论证了影响高层建筑等效输入地震动的主要因素，并说明了在结构地震反应分析中考虑结构—土相互作用影响的必要性。
A common method of seismic motion input in current seismic response analysis for high rise buildings is briefly introduced. A calculating model considering the structure and site as a whole ( which consists of similar high rise buildings and four different kinds of site conditions ) is applied in the case study. Based on the comparison of the calculated responses of site surface, horizontal motion on the top of the structures, the amplitude spectra of the transfer function between the equivalent input at the foundation of the structure to the relative incident wave and the internal forces of the structural units etc.,the main factors which affect the equivalent seismic motion input of high rise buildings have been demonstrated, and the necessity considering the effect of structure soil interaction in the analysis of seismic response of structure has been explained.
出处
《建筑科学》
1999年第3期6-13,共8页
Building Science
