Abstract:Topology of intersection bracing members on the body of transmission tower is the key to determining structure’s total weight. In this paper, the problem of its optimization was solved in three steps: First, the ground structure’s nodes were got by Fibonacci search according to the characteristics ,that there was only one minimum when the total weight varieties with the number of nodes , so the ground structure was built; Second, a recursion procedure was proposed to find all the feasible topology schemes, and ant colony algorithm was employed to find the optimal one; third, node’s coordinates were optimized by sequence two-stage algorithm. Applications for three samples were presented, the topology of the intersection diagonal members and all the node’s coordinates were optimized, Key results include a new topology design and a certain mass reduction, and the result is practical in project.
