金属阻尼器和粘弹性阻尼器的优化算法研究  

Study on Optimal Algorithm for Metal Dampers and Viscoelastic Dampers

作　　者：张耀笑 邱吉祥 裴星洙[1] Zhang Yao-xiao Qiu Ji-xiang Pei Xing-zhu(School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212003, China International Century Design of Architecture Co. Ltd , Changzhou 213000, China)

机构地区：[1]江苏科技大学土木工程与建筑学院,江苏镇江212003 [2]江苏筑森建筑设计股份有限公司,江苏常州213000

出　　处：《工程抗震与加固改造》2017年第5期55-61,80,共8页Earthquake Resistant Engineering and Retrofitting

摘　　要：建立了20层钢框架模型,设定目标层间位移角,参考日本抗震规范规定的地震剪力计算方法确定主结构抗侧刚度,利用等效线性化理论将多质点体系简化为单质点体系,分别计算金属阻尼器附加体系的需求弹性刚度比和粘弹性阻尼器附加体系的需求刚度比,将需求刚度比分配到多质点体系中,利用程序进行时程分析,检验结构在各种工况下的减震性能。对金属阻尼器附加体系储存刚度比和粘弹性阻尼器附加体系储存刚度比分别进行拟合,得到经验公式,并通过30层钢框架模型,验证了公式的正确性。由此得出结论:(1)本文阻尼量的算法合理,采用该算法布置阻尼器后,层间位移、最大绝对位移及剪力降低率均大幅减小,其阻尼器耗能比在80%以上;(2)工况2的阻尼器布置形式较为合理,其三种指标优于其他工况。(3)本文拟合的经验公式(8)、(9)是合理的,能大量减少阻尼器设计工作。In this paper,a 20-storey steel-frame model is established and the target storey drift angle is set. Based on the calculation method of seismic shear force stipulated by the Japan anti-seismic standard,the lateral stiffness of main structure is obtained. Using the equivalent linearization theory,the multi-particle system is simplified into the single particle system,and the corresponding calculation of the required elastic stiffness ratio of the additional metal damper system and viscoelastic damper system is achieved. Then,the required elastic stiffness ratios are respectively distributed into the multi-particle system. By the history response analysis,the passive control performance of the structure under various operating conditions is tested. The empirical formulas are established by respectively fitting the storage stiffness ratios of the additional metal damper system and additional viscoelastic damper system. The dynamic responses of 30-storey steel-frame model prove the validity of the formula. It is concluded that：（1） the damping calculation method in this paper is reasonable,when this method is used for the distribution of dampers,the storey drift,maximum absolute displacement and shear reduction ratio are all reduced,and the energy consumption ratio of damper is above 80%;（2） the distribution of dampers in Condition 2 is more reasonable,and the three indexes are superior to those of others;（3） the empirical formula（8） and（9） are proper,which can significantly reduce the design work of dampers.

关 键 词：金属阻尼器 粘弹性阻尼器 储存刚度比 经验公式 优化算法 

分 类 号：TU973.31[建筑科学—结构工程]