OPTIMUM DESIGN OF PRESTRESSED CONCRETE TRANSMISSION POLES

OPTIMUM DESIGN OF PRESTRESSED CONCRETE TRANSMISSION POLES

Abstract:

The minimum weight design problems for three different crosssectional shapes of prestressed concrete transmission poles subject to stress displacement and buckling load restrictions is attempted. The poles are idealized using the class one prestressed conctrete equations. The optimization technique employed for the solution procedure utilizes the variable metric method by Davidon-Fletcher-Powell for unconstrained minimization and cubic interpolation method of one dimensional search, based on the interior penalty function method. It is a mathematical programming approach involving gradient based method. Partial derivatives are computed using a finite diference technique. The cross-sectional dimensions and tendon wires are used as design variables. Off-design charts have been obtained by performing sensitivity analysis about the final optimum design point. Numerical results for the three cross-sectional shapes considered are presented along with flow-charts, computer programs and program outputs

OPTIMUM DESIGN OF PRESTRESSED CONCRETE TRANSMISSION POLES