摘要
采用基于小生镜技术的遗传算法,对半刚性连接钢框架进行优化设计,针对其早熟现象和局部搜索能力差的缺点改进遗传算法。使用自适应策略改进交叉与变异算子。建立半刚性连接钢框架优化设计数学模型,编制了基于遗传算法的优化设计程序。运用这一优化算法可以直接从型钢截面表中选取截面,并在优化设计过程中考虑了连接可变性和二阶效应的影响。通过几个设计实例表明,考虑几何非线性会使用钢量增加,有支撑的情况下,半刚性连接较刚接用钢量经济。
The limit operator Steel frames with semi-rigid connec ation of GA such as poor local searc and mutation frames with semi-rigid semi-rigid connections. from tions is improved connections The design standard steel section tables, and the geo are studied. The it is also noticed while is dis tions are optimized using a nich h ability and prematur considering the adaptive e is large method. e genetic algorithm（NGA）. ly enhanced. The crossover Mathematic model of steel cussed. A software system is developed for steel frames with algorithm obtains optimum frame by selecting appropriate the algorithm accounts for the effect of the flexibility of the metric non-linearity of the members, two design result has shown that consideration of geometric that using steel weights is lighter to braced steel sections connecexamples with semi-rigid connections non-linearity results in more weights, frame with semi-rigid connections.
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2008年第3期373-378,共6页
Chinese Journal of Computational Mechanics
关键词
遗传算法
半刚接
非线性
钢框架
genetic algorithm
semi-rigid
non-linearity
steel frame
