Optimum detailed design of reinforced concrete continuous beams using Genetic Algorithms

Authors:
V. Govindaraj;J. V. Ramasamy
Affiliations:
Department of Civil Engineering, Kumaraguru College of Technology, Coimbatore 641 006, TamilNadu, India;Department of Civil Engineering, P.S.G. College of Technology, Coimbatore 641 004, TamilNadu, India
Venue:
Computers and Structures
Year:
2005

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Abstract

This paper presents the application of Genetic Algorithms for the optimum detailed design of reinforced concrete continuous beams based on Indian Standard specifications. The produced optimum design satisfies the strength, serviceability, ductility, durability and other constraints related to good design and detailing practice. While most of the approaches reported in the literature consider the steel reinforcement as a variable, the cross-sectional dimensions of the beam alone are considered as the variables in the present optimum design model. The areas of longitudinal steel obtained from the design are converted into a least weight detailing of steel reinforcements. This is achieved by generating a database of reinforcement templates containing different available reinforcement bar diameters in a pre-specified pattern, satisfying the user specified bar rules and other bar spacing requirements. The optimum design results are compared with those in the available literature. An example problem is illustrated and the results are presented. It is concluded that the proposed optimum design model yields rational, reliable, economical and practical designs.