高层建筑局部消能减震体系的参数影响及设计分析  

Parameter Influence and Design Analysis of Tall Structure with Local Energy Dissipation

作　　者：靳金平[1] 张文芳[2] 卫丽[2] 

机构地区：[1]中国核电工程有限公司,北京100840 [2]太原理工大学,山西太原030024

出　　处：《工程抗震与加固改造》2008年第1期9-13,18,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：山西省自然科学基金项目(20051053);太原建管委城建科研项目(200534)

摘　　要：本文分析了影响局部消能减震新体系减震效果的主要因素，为上下部结构的重力荷载比、周期比以及上部结构的等效粘滞阻尼比。通过计算得到了上下部结构重力荷载比的适宜配置为Rg=0．1-0．4，周期比的适宜配置为T=0．9～1．5，适宜的上部结构附加阻尼比为ζdl=0．15～0．25。提出了局部消能减震结构的改进振型分解反应谱法，通过算例分析，说明该方法用于局部消能减震结构是可行的，计算结果能够满足工程设计精度要求。In this paper, the main influence factors of local energy dissipation system are found out. Those are gravitational load ratio and period ratio of upper and bottom structure, and additional damping ratio of upper structure. The analysis indicated the feasible gravitational load ratio is Rg = 0.1 - 0.4, the feasible period ratio is RT = 0.9 - 1.5 and the feasible additional damping ratio is ζdl = 0.15 - 0.25 .Considering the specialties of damper matrix of local energy dissipation, mode analysis response spectrum method is improved. Through an example, it was proved that this method is feasible and the precision of result is sufficient.

关 键 词：局部消能减震 参数影响 阻尼比 振型分解反应谱法 

分 类 号：TU352.1[建筑科学—结构工程]