Optimum Design of Two-Dimensional Steel Structures Using Genetic Algorithms

J. Ocean Eng. Technol. 2007;21(2):75-80.

Kim, Bong-Ik;Kwon, Jung-Hyun;

Division of Civil and Environmental Engineering, Gyeongsang University;Division of Civil and Environmental Engineering, Gyeongsang University;

유전자 알고리즘을 이용한 2차원 강구조물의 최적설계

김봉익;권중현;

경상대학교 토목환경공학부 해양산업연구소;경상대학교 토목환경공학부 해양산업연구소;

Keywords: Discrete optimization, Truss, Frame, Genetic algorithms

핵심용어: 이산최적화, 트러스, 프레임, 유전자 알고리즘

Abstract

The design variables for structural systems, in most practical designs, are chosen from a list of discrete values, which are commercially available sizing. This paper presents the application of Genetic Algorithms for determining the optimum design for two-dimensional structures with discrete and pseudocontinuous design variables. Genetic Algorithms are heuristic search algorithms and are effective tools for finding global solutions for discrete optimization. In this paper, Genetic Algorithms are used as the method of Elitism and penalty parameters, in order to improve fitness in the reproduction process. Examples in this paper include: 10 bar planar truss and 1 bay 8-story frame. Truss with discrete and pseudoucontinuous design variables and steel frame with W-sections are used for the design of discrete optimization.