Manas Ranjan Das, Sandip Purohit; Sarat Kumar Das

Published:

Abstract The reinforced cement concrete cantilever retaining wall is the most common type of retaining wall used in hillside roads, canals and bridge abutments. Methods for developing low-cost and low-weight designs of reinforced concrete retaining structures have been the subject of research using optimization tools. However, for an appropriate techno-commercial decision making, an ideal optimization method should give the optimized cost vis-à-vis corresponding factor of safety (FOS) against external stability like bearing, sliding, eccentricity and overturning. In this paper the optimum design of retaining wall is presented in multi-objective framework using elitist non-dominated sorting genetic algorithm (NSGA-II) considering both the cost and FOS as trade-off solutions. A set of effective Pareto optimal set was discussed indicating the efficacy of NSGA-II in finding out distinct and number of Pareto solutions. Optimum dimension of the retaining wall is also presented in terms of non-dimensional form for benefit of the professional engineers.AbstractThe reinforced cement concrete cantilever retaining wall is the most common type of retaining wall used in hillside roads, canals and bridge abutments. Methods for developing low-cost and low-weight designs of reinforced concrete retaining structures have been the subject of research using optimization tools. However, for an appropriate techno-commercial decision making, an ideal optimization method should give the optimized cost vis-à-vis corresponding factor of safety (FOS) against external stability like bearing, sliding, eccentricity and overturning. In this paper the optimum design of retaining wall is presented in multi-objective framework using elitist non-dominated sorting genetic algorithm (NSGA-II) considering both the cost and FOS as trade-off solutions. A set of effective Pareto optimal set was discussed indicating the efficacy of NSGA-II in finding out distinct and number of Pareto solutions. Optimum dimension of the retaining wall is also presented in terms of non-dimensional form for benefit of the professional engineers.