塔裙一体结构地震响应研究

Study on seismic response of tower-podium integrated structure

塔裙一体结构地震响应研究对于塔裙方案抗震分缝策略、塔楼抗震设计方法有重大意义。以塔裙一体结构为研究对象,从裙房刚度和裙房塔楼楼层质量比两个因素入手,详细分析了裙房刚度和裙塔楼层质量比对于塔楼地震响应的影响。分析结果表明,裙房刚度和裙塔楼层质量比对于塔楼地震响应影响十分明显;结构抗侧刚度除了与结构布置自身相关以外,与楼层质量分布也具有相关性。对于塔裙一体结构而言,塔楼的抗震设计十分关键,需要采取塔楼单独计算和塔裙一体计算包络分析方法。

The study of seismic response of tower-podium integrated structure is of great significance to the strategy of seismic joint separation of tower-podium scheme and the seismic design method of tower building. Taking the tower-podium integrated structure as the research object,the two factors of the podium stiffness and the tower-podium floor mass ratio were used to study the influence of the podium stiffness and the tower-podium floor mass ratio of the podium tower on the seismic response of the tower in detail. The analysis results show that the stiffness and tower-podium floor mass ratio have a significant impact on the seismic response of the tower,and the lateral stiffness of the structure is related not only to the structural layout itself,but also to the mass distribution of the floor. For the tower-podium integrated structure,the seismic design of the tower is very important. It is necessary to adopt the envelope analysis method to consider both the calculation of tower-podium integrated structure and the calculation of the tower alone.