EVOLUTION OF OPTIMUM TRAPEZOIDAL SHEETING PROFILE BASED ON EUROCODE, USING FINITE STRIP METHOD AND GENETIC ALGORITHM

摘要

Profiled steel sheeting is widely used for cladding, roofing and flooring. Its development is coupled with the rising interest in cold-formed light-weight steel structures. Due to the variety of different profiles available on the market, the question of optimum shapes arises. This article introduces a new technique by which these can be obtained on the ground of the Eurocode specifications. The developed algorithm uses finite strip method, and a novel technique of extreme value search, genetic algorithm. Demonstrative examples of simply supported and two span arrangements are shown and results are discussed.