Author(s)

Y. Kohama, T. Takada, N. Kozawa & A. Miyamura

Abstract

The present paper deals with application of the genetic algorithm to the collapse load analysis of rigid frames. This analysis is formulated as a combinatorial problem such that the lowest collapse load factor should be searched among an enormous set of lin- ear combinations of elementary collapse modes graphically generated by the kinematic admissible approach or the upper bound theorem. Many searching techniques such as linear programming, dynamic programming, branch-and-bound method or exhaustive enumeration with a generate-and-test are applied to this problem. Herein, the genetic algorithm based on an efficient numbering of collapse modes described by the graph theory shows versatility in comparison with the branch-and-bound method in terms of numerical simulations. 1 Introduction R

Keywords