摘要
提出采用被动控制技术的减震结构位置优化分析方法及其数学模型。结合该类优化问题的特点与主要优化算法的数学原理,选取遗传算法作为结构减震装置位置优化分析工具,并在Matlab遗传工具箱基础上进行了改进,以提高寻优效率,进而通过目标函数程序的编制,实现了改进遗传算法在结构被动控制系统位置优化分析中的应用。最后,设置了2类不同的适应度函数,对一平面框架与一平面排架分别进行了结构减震布置优化与考虑阻尼器耗能效率的减震方案优化。结果表明,遗传算法以及相应的优化程序可以有效准确地实现结构减震位置的优化分析。
The analysis method for optimization of locating seismic reduction device in passive control technique and corresponding mathematic model were presented. Combining with the model characteristics of optimization of seismic reduction device and mathematical principle of main optimization algorithm, genetic optimization algorithm was chosen for damper location opti- mization analysis. The algorithm was improved to increase optimization efficiency and improve calculating accuracy. Through compiling objective function in Matlab, damper location optimiza- tion program of seismic reduction device was established. Two different fitness functions were set up and damper location optimization of one plane frame and one bent were carried out. Results show that the optimization algorithm presented in this paper and corresponding program can realize the location optimization analysis of seismic reduction device effectively and accurately.
出处
《防灾减灾工程学报》
CSCD
北大核心
2013年第5期530-535,共6页
Journal of Disaster Prevention and Mitigation Engineering
基金
国家自然基金面上项目(51178100)
江苏省自然科学基金面上项目(BK2011693)
江苏省高校自然科学研究项目(10KJB560003)资助
关键词
遗传算法
优化分析
genetic algorithm
optimization analysis
vibration control
seismic reduction structure
location optimization
