遗传算法在桁架结构优化设计中的应用  

OPTIMIZATION OF TRUSS STRUCTURES USING GENETIC ALGORITHM

作　　者：马光文[1] 王黎[1] 

机构地区：[1]四川联合大学水利系

出　　处：《工程力学》1998年第2期38-44,共7页Engineering Mechanics

摘　　要：本文提出桁架结构系统优化设计的新方法—遗传算法。它与常规化算法的不同之处在于从多个初始点开始寻优，并采用交迭和变异算子避免过早地收敛到局部最优解，可获得全局最优解，且不受初始值影响。该算法不必求导计算，编程简单、快捷，尤其适用于具有离散变量的结构优化设计问题。This paper presents a genetic algorithm (GA) for optimizing truss structural system with discrete design variables. It differs from existing mathematical programming methods in that the GA uses a population of initial points in contrast to the single-point approach by the traditional ones. The optimal solution by GA is no longer dependent on initial search values, and will guarantee a global optimum. Derivative calculation is not necessary and computer program is simple. Genetic algorithm is best suited for structural optimizations which have discrete variables.

关 键 词：最优化设计 结构工程 离散变量 桁架结构 

分 类 号：TU323.404[建筑科学—结构工程]