摘要
本文通过Maxwell模型模拟的黏滞阻尼器连接的2种不同相邻结构的地震反应分析,对阻尼器设置的位置和阻尼参数进行了同时优化。在El Centro波、Tianjin波和Taft波3种较典型的地震动作用下,分别对不同质量比和不同刚度比的主、子结构在无阻尼和有阻尼情况下进行了地震反应分析,并以主结构的顶层最大相对位移最小作为优化目标,寻求出最优的阻尼器摆放位置以及对应的最优阻尼系数。结果显示,当阻尼器选择合适的安放位置和合理的阻尼参数时,主、子结构的地震反应都会有一定程度的降低,从而收到较好的减震效果。
Seismic responses of two different adjacent structures connected by Maxwell model-defined viscous liquid damper and optimized locations and parameters of dampers at the same time are presented, Seismic responses of primary and auxiliary structures with different mass ratios and stiffness ratios are analyzed with dampers or without damper under three seismic excitations, namely E1 Centro, Tianjin and Taft ground motions. The optimal locations of dampers and corresponding damping coefficients are found out by minimizing the top-floor maximum relative displacement of primary structure. The results show that selecting appropriate locations and damping parameters of dampers can reduce the seismic responses of primary and auxiliary structures to a certain extent. A better effect can be produced in mitigating seismic responses.
出处
《地震工程与工程振动》
CSCD
北大核心
2007年第5期166-172,共7页
Earthquake Engineering and Engineering Dynamics
基金
上海市教委科技发展基金(04AB23)
关键词
相邻结构
黏滞阻尼器
地震反应
优化位置
优化阻尼系数
adjacent structures
viscous fluid damper
seismic response
optimal location
optimal damping coefficient
