Optimum Design of Reinforced Concrete Beam Using Genetic Algorithms

J. Ocean Eng. Technol. 2009;23(6):131-135.

Kim Bong-Ik,Kwon Jung-Hyun

Dept. of Ocean Civil Engineering Gyeongsang Univ,Dept. of Ocean Civil Engineering Gyeongsang Univ

유전자 알고리즘을 이용한 철근콘크리트 보의 단면 최적설계

김봉익,권중현

경상대학교 해양토목공학과 해양산업연구소,경상대학교 해양토목공학과 해양산업연구소

Keywords: Optimum design, Reinforced concrete beam, Genetic algorithms

핵심용어: 최적설계, 철근콘크리트 보, 유전자 알고리즘

Abstract

We present an optimum design method for a rectangular reinforced concrete beam using Genetic Algorithms. The optimum design procedure in this paper employs 2 design cases: i) all of the design variables (b, d, As) of the rectangular reinforced concrete section are used pseudo-continuously, ii) one is pseudo-continuous for the concrete cross section (b, d) and the other is discrete, using an index for the steel area (As). The optimum design in this paper uses Chakrabarty's model. In this paper, the Genetic Algorithms use the method of Elitism and penalty parameters to improve the fitness in the reproduction process, which leads to very practical designs. The optimum design of the steel area in the examples uses ASTM standard reinforcing bars (#3~#11, #14, #18).