摘要
针对带钢桁架伸臂层的等、变截面框筒结构,运用遗传算法对伸臂层的最优位置进行了研究。同时,使用Matlab语言编制了基于遗传算法的最优位置优化设计程序。另外,文中对比分析了基于不同优化目标函数(结构顶点位移、层间位移角)与不同形式水平荷载(均布、三角形、抛物线形)的优化结果。最后,以一个高度为260m的带钢桁架伸臂层框筒结构为例,给出了相关的优化结果与结论,成果可为类似工程初步设计提供借鉴。
Owing to its advantages,the outrigger-braced system has been used widely in frame tube high-rise structures.It's apparent that the locations of outriggers in this system have a vital impact on the performance of high-rise buildings.On the basis of frame tube structure with constant and variable cross section steel truss cantilever layer,this paper uses genetic algorithm to study the optimal position of outrigger layer. At the same time,the optimization design program based on Matlab language is compiled.In addition,the optimization results based on different optimization objective functions(structural vertex displacement,inter story displacement angle)and different horizontal loads(uniformly distributed,triangular and parabolic) are compared and analyzed.Finally,the paper uses the example of frame tube structure of 260 m steel truss cantilever layer and gives the optimization conclusions.The research results can provide reference for the preliminary design of similar projects.
出处
《低温建筑技术》
2018年第1期47-52,共6页
Low Temperature Architecture Technology
基金
浙江省公益技术应用研究计划项目(2016C33258)
浙江省住房与城乡建设厅科技项目(2016K118)
浙江省自然科学基金(LY15E080015)
2016年浙江省大学生科技创新活动计划(20160005)
2016年国家级大学生创新计划项目(201611058010)
关键词
钢桁架伸臂体系
目标函数
水平荷载
遗传算法
优化设计
outrigger braced system
objective function
lateral loading
genetic algorithm
opti mum design
