基于模式搜索算法的大跨机库柱间消能支撑参数优化研究  

Research of parameter optimization of energy dissipation braces between columns of long-span hangar based on pattern search algorithm

作　　者：徐庆阳[1,2] 李爱群 沈顺高[4] 丁幼亮[3] 

机构地区：[1]南京审计学院国际审计学院江苏公共工程审计重点实验室,江苏南京211815 [2]中国长江三峡集团,北京100038 [3]东南大学土木工程学院,江苏南京210096 [4]中国航空规划建设发展有限公司,北京100120

出　　处：《四川建筑科学研究》2014年第6期139-144,共6页Sichuan Building Science

基　　金：国家自然科学基金面上项目(51178100);江苏省自然科学基金面上项目(BK2011693)

摘　　要：大跨维修机库动力特性复杂,针对该类结构的减震研究则刚刚起步。本文结合大跨机库的地震响应特点,采用布置柱间消能支撑来进行机库结构地震响应的被动控制。结合减震结构优化模型特点与主要优化算法的数学原理,选取模式搜索算法作为结构减震装置参数优化分析工具,通过目标函数程序的编制实现了模式搜索算法在结构被动控制系统参数优化分析中的应用。最后针对机库基底剪力设置了适应度函数,进行了机库结构柱间耗能支撑阻尼系数的优化分析,并给出了机库减震效果随减震装置参数的变化规律。分析表明,模式搜索算法以及相应的优化程序可以有效地实现机库结构减震参数优化分析。The dynamic characteristics of long-span hangar are very complex and shock absorption study on this type structure is just started. Combining with seismic response characteristics,fluid viscous dampers are set between columns and joints of the roof to reduce seismic response. Based on the optimization model characteristics of seismic reduction structure and mathematical principle of main optimization algorithm,pattern search algorithm is chosen for damper parameter optimization analysis. Through secondary development of MATLAB,damper parameter optimization program of seismic reduction structure is established. Fitness functions aiming at base shear is set and damper parameter optimization of one hangar is carried out and Change law of damping effect according to the parameter damping device is also given out. Results show the pattern search algorithm of this paper and corresponding program can realize the parameter optimization analysis effectively.

关 键 词：优化算法 模式搜索 振动控制 减震结构 参数优化 

分 类 号：O328[理学—一般力学与力学基础] TU311.3[理学—力学]