Wind-induced response based optimal design of irregular shaped tall buildings

Abstract

This study takes sectional dimensions of structural members as basic design variables, total weight as objective function and wind-induced responses as constraint conditions. A mathematical tablmodel for the wind-resistant optimal design of tall buildings with irregular shapes is esished. Based on the Kuhn–Tucker conditions, the Optimality Criteria (OC) method is combined with a recursive algorithm to obtain the optimal solutions of the design variables. Wind tunnel testing results of an L-shaped tall building are used to validate the accuracy and efficiency of the optimal design model. The results of the case study showed that the total weight was decreased by 18.1% and the equivalent static wind loading (ESWL) in across-wind direction was reduced by 9.03% after the design optimization, thus demonstrating the effectiveness of the proposed optimal design method.