MINIMUM WEIGHT DESIGN OF STEEL BUILDING FRAMES USING GENETIC ALGORITHM SUBJECTED TO WEIGHT LIMIT

Abstract

This paper presents a revised genetic algorithm for building structural optimization. The presented algorithm can generate the individuals whose structural weights are close to that of the best individual in the previous generation by using the especial crossover technique based on structural weight limit. The presented algorithm is applied to the minimum weight elastic and plastic design problems of 5-story and 8-story plane frames and minimum weight elastic design problems of 15-story and 18-story frames. The numerical results obtained by the presented algorithm are compared with those obtained by the simple genetic algorithm to check the effectiveness.