减震结构不同类型阻尼器同步优化方法  

Synchronization optimization of different types of dampers for energy dissipation structure

作　　者：王曙光[1] 杨烨 杜东升[1] WANG Shu-guang;YANG Ye;DU Dong-sheng(Colege of Civil Engineering Nanjing Tech University,Nanjing 211816 China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211816

出　　处：《振动工程学报》2020年第6期1141-1149,共9页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51678302,51678301);国家重点研发计划资助项目(2017YFC0703600)。

摘　　要：推导了地震作用下结构布置不同类型阻尼器的状态空间统一描述方法,并在此基础上,采用遗传算法实现了多种不同类型阻尼器的同步优化布置。通过转换矩阵将阻尼器对层间的的影响转换于楼层响应,推导出状态空间方程中不同类型阻尼器对应的系数矩阵,将运动方程转换为状态空间法的统一表达形式。结合遗传算法对可行解的表示具有广泛性这一特点,对附加不同类型阻尼器的结构统一编码,实现同步优化布置。采用本文方法对6层及20层框架结构进行了固定总数的一种类型阻尼器优化布置,并与已有研究的优化结果做对比,得到一致的优化结果,验证了该方法的可行性。又对同一结构进行三种类型阻尼器同步优化布置,减震效果优于其他布置方案,证明了该方法在处理同步优化不同类型阻尼器问题上的有效性。本文方法还结合了状态空间法统一描述问题的优点与遗传算法全局搜索最优解的优点,可以在较短时间内同时优化多种不同类型的阻尼器位置。In this paper,a unified description method of state space for structural arrangement of different dampers is derived.Based on this,agenetic algorithm is used to realize the synchronous optimization of a fixed number of different types of dampers.The transformation matrix is used to convert the influence of the damper on the floor to the floor response,and the coefficient matrice corresponding to different types of dampers in the state space equation are derived,and the motion equation is transformed into a unified expression of the state space method.Combined with the genetic algorithm,the representation of the feasible solution has a wide range of features,and the structure with different types of dampers is uniformly coded to achieve synchronous optimization.A fixed-type damper optimization arrangement of 6-layer and 20-layer frame structures is carried out by this method.The obtained optimization results are consistent with the existing research results,which verifies the feasibility of the proposed method.The optimization arrangement for the same structures with three types of dampers is also studied,which has better seismic resistance effect than other arrangements.It proves the effectiveness of the proposed method in the simultaneous optimization of different types of dampers.The method combines the advantage of unified description of the problem by state space method with the advantage of global search of optimal solution by genetic algorithm,and can optimize multiple different types of damper positions in a short time.This work can provide certain theoretical value for the application of the intelligent optimization represented by genetic algorithm in the field of civil engineering,and has certain guiding significance for the practical engineering application of the optimal arrangement of the damper.

关 键 词：减震系统 状态空间法 遗传算法 阻尼器优化 同步优化 

分 类 号：TU352.1[建筑科学—结构工程]