摘要
鉴于目前土木工程的结构抗震优化设计方法尚未考虑到结构设计与控制设计之间的耦合相关性,极有可能丧失系统最优解,故运用协同优化策略对钢结构与控制系统进行一体化设计。首先建立耦合地震作用下含磁流变阻尼器(MRD)的运动方程,采用瞬时最优控制策略对其进行地震响应控制;进一步建立钢结构和MRD的优化模型,采用鱼群算法处理结构和MRD的多目标优化问题。优化结果表明:经协同优化设计后的受控结构性能优于串行设计的;耦合地震作用的优化结果稍大于只考虑水平地震作用的。
The current anti-seism design method of civil engineering structure possibly loses system optimal solution because it does not consider the mutual coupling effect between structure design and control design .The collaborative optimization strategy is used for the integrated optimization of steel structure and control systems .The equation of motion for steel structure including MRD under coupling earthquake is built , where the instantaneous optimal control strategy is applied for the control design . The integrated optimization model for the controlled structures is established.The multi-objective AFSA is chosen as the optimization method for the integrated optimization .The results of a numerical example show that structure and control system have better properties after the integrated optimization than those after the serial design , and the optimal structural weight under coupling earthquake is larger than that under horizontal earthquake only .
出处
《工业建筑》
CSCD
北大核心
2014年第7期164-169,共6页
Industrial Construction
基金
国家自然科学基金资助项目(11072197)
教育部博士点基金资助项目(20096102110018)
校基础研究基金联合资助项目(JC20120232)
关键词
钢结构
MRD
协同优化
耦合地震
鱼群算法
steel structure
MRD
integrated optimization
coupling earthquake
AFSA
