摘要
结合云南省地方规定有控结构与无控结构位移角之比应小于0. 75的要求,介绍了BRB+黏滞阻尼器组合体系的优势和减震机理。以云南某项目为例,重点分析了该体系在地震作用下的性能。计算结果表明:BRB+黏滞阻尼器组合体系既可以有效控制位移角又可以降低地震作用;随着地震作用强度的增加,黏滞阻尼器的附加阻尼比减弱,能量法计算的附加阻尼比偏小,自由衰减法和规范方法计算结果接近。
Combined with rules in Yunnan province,the ratio of drift must be less than between controlled structural and uncontrolled structural,the advantages and damping mechanism of BRB + viscous dampers combination system were introduced. Based on a practical structure in Yunnan province,the performance of system was analyzed in earthquake.The result show that this system could work in both controlling drift and decreasing earthquake effect. The added damping ratio provided by viscous dampers would decrease with increasing earthquake effect. The result of energy method is small in added damping ratio,but it was proximate between code method and free damped vibration method.
作者
陈云
胡大柱
Chen Yun;Hu Dazhu(Shanghai Lanke Building Damping Technology Co.,Ltd.,Shanghai 200433,China;Nantong Lanke Building Damping Technology Co.,Ltd.,Nantong 226000,China)
出处
《建筑结构》
CSCD
北大核心
2018年第S2期393-398,共6页
Building Structure
关键词
位移角
BRB+黏滞组合体系
能量法
自由衰减法
规范方法
drift
BRB + viscous dampers combination system
energy method
free damped vibration method
code method
