基于NSGA-Ⅱ的层间隔震体系参数优化与能量响应分析  

Parameters optimization and energy analysis of inter-story isolation system based on Non-dominated Sorting Genetic Algorithm with Elitism

作　　者：张尚荣[1,2] 谭平[3] 杜永峰[1] 包超[1] 周福霖[3] 

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]宁夏大学土木与水利工程学院,宁夏银川750021 [3]广州大学工程抗震研究中心,广东广州510405

出　　处：《合肥工业大学学报（自然科学版）》2015年第7期949-954,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家重点基础研究发展计划(973计划)资助项目(2012CB723300;2012CB723304);国家科技支撑计划子课题资助项目(2012BAJ07B02);国家自然科学基金资助项目(51078097;51178211);广州市羊城学者科技计划资助项目(10A032D)

摘　　要：基于层间隔震体系两质点简化模型,建立了以基底剪力最小为优化目标的参数优化方法,采用NSGA-Ⅱ优化得到层间隔震体系在不同质量比下的最优频率比和最优阻尼比;建立了体系的能量和功率方程,从能量和功率角度分别分析了不同质量比下的层间隔震结构最优参数模型能量的传递、耗散和转化关系以及机理表现。Based on simplified model of two mass-points of inter-story isolation system, the parameter optimiza- tion method was established which made base shear minimum as optimization target. The optimal frequency ratio and the optimal damping ratio of inter-story isolation system under different mass ratios were obtained by using the Non-dominated Sorting Genetic Algorithm with Elitism（NSGA-[D. The energy and power equa- tions of the system were also established, and the energy transfer, dissipation, conversion relations and mech- anism performance of the optimal parameter model of inter-story isolation system under different mass ratios were analyzed respectively from the perspectives of energy and power.

关 键 词：层间隔震体系 非支配排序遗传算法Ⅱ(NSGA-Ⅱ) 能量分析 功率分析 减震机理 

分 类 号：TU352.12[建筑科学—结构工程]