GRG METHOD FOR OPTIMISATION OF FLEXURAL STEEL MEMBERS

In this paper, optimized sections are obtained for different spans subjected to different live load carrying capacities and self-weights are estimated. EXCEL solver, which adopts Reduced Gradient Method (RGM) was applied for optimization. The objective function was chosen as Cross-sectional area with twelve constraints based on LRFD (IS 800: 2007) design specification for safety and serviceability. Simply supported (laterally restrained) plastic symmetric cross section without stiffeners is adopted for study. It is concluded that GRG method using by EXCEL Solver can be successfully applied for the optimization of steel Plate Girder.