Study on Topology Optimization Design of Steel Frame Bracing System Based on Discrete Model

Abstract

Comparing with the frame structure without any aseismic members, bracing-frame is a better form for the aseismic frame structure. But the form of bracing –frame is determined by the engineering experience. The best design plan can’t be determined using the traditional design method. In order to find the optimal result for the bracing –frame structure, the bracing system topology and the semi-rigid connection topology was considered in this paper. And the optimal model was built based on on discrete topology math model. And the dominant winning role for genetic algorithm was adopted due to a large number of non-linear problems. Through the optimal design for active semi-rigid frame bracing system based on discrete topology method, we can get the best design plan in whole structure system, which have better engineering significance and reference value usually.