Al-Tabtabai H, Alex A P, James R
Slab formwork design using genetic algorithm
Abstract: A method to design cost-optimum slab formwork components is proposed
in this paper. Genetic Algorithms (GAs), a technique based on the
principles of natural selection and evolution, is applied to solve the
optimisation problem. GAs search from a population of possible solutions
limited by a set of constraints. The cost of form components and labor
involved, were considered for the formulation of the objective function of
the optimisation problem. The bending moment, shear, maximum
deflection, imposed ACI code provisions, etc., were used as constraints for
the optimisation problem. Application of GA to the formwork design
problem provides optimum design parameters such as the optimum cross
section for form members, optimum spacing of form members, etc., while
minimising the total cost. Formwork made either from wood, wood-metal
composite or metal alone can be designed using the proposed technique.
The paper presents the case of general formwork design, however, the
method as a whole readily applies to the design of formwok for elevated
slabs and high rise concrete elements.
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.