Topology optimization of transmission tower legs based on an improved artificial fish-swarm algorithm
GUO Huiyong1,2,SONG Xiaohui1,2,LI Zhengliang1,2
1.School of Civil Engineering,Chongqing University,Chongqing 400045,China;
2.Key Laboratory of New Technology for Construction of Cities in Mountain Area,Ministry of Education,Chongqing University,Chongqing 400045,China
Abstract：In order to solve the structural optimization problem of transmission tower legs,a topology optimization method based on artificial fish-swarm algorithm (AFSA) was presented. First the calculation model of the topology optimization of transmission tower legs was established. Topology variable optimization rules were proposed. Then,an artificial fish-swarm algorithm was utilized to optimize the transmission tower legs. Considering the optimization results of simple AFSA were not very good,two kinds of improved strategies: position formula with dynamic visual and step,acceleration strategy,were presented. Simulation results show that the simple AFSA and the improved AFSA can optimize the transmission tower legs. The optimization results of the improved AFSA method are obviously better than those of the simple AFSA and the difference quotient algorithm.
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