A topology optimization method for auxiliary materials of transmission tower legs based on improved artificial fish swarm algorithm

Abstract

The invention discloses a power transmission tower tower-leg auxiliary material topological-structure optimization method based on an improved artificial fish swarm algorithm. The method comprises the following steps: 1) firstly establishing a tower leg auxiliary material optimization mathematical model taking the fact that the quality of a tower leg is lightest as a target function, and satisfying a constraint condition through adding a penalty term to the target function, 2) loading a corresponding parameter group for determining a tower leg design scheme to artificial fishes, and achieving a change of the design scheme through a change of a swimming position of each artificial fish, 3) searching optimized artificial fish individuals through adoption of an artificial fish swarm algorithm, and 4) when an end condition is satisfied, outputting the optimal artificial fish individual, converting the optimal artificial fish position parameter into a corresponding structural parameter of the tower leg design scheme, and finally outputting the tower leg design scheme. The method can process a topological configuration change problem of a tower leg auxiliary material of a power transmission tower, and also improve structural optimization efficiency and precision through visual field and a foraging behavior.

Description

technical field [0001] The invention relates to the optimization of the topology structure of the auxiliary materials of the legs of the transmission tower, and specifically refers to a method for optimizing the topology structure of the auxiliary materials of the legs of the transmission tower based on the improved artificial fish swarm algorithm, which belongs to the technical field of engineering structure optimization. Background technique [0002] As the main carrier of high-voltage electric energy transmission, the transmission tower is an important lifeline project. The design level of the tower directly affects the safety of the power grid operation. Designing a safe, reliable, economical and reasonable transmission tower is of great significance to saving tower materials, reducing project cost and ensuring the safety and stability of the power grid. The transmission tower is composed of three parts: the tower head, the tower body and the tower legs, and the tower le...

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Problems solved by technology

[0004] 1) The existing optimization methods for tower leg auxiliary materials of transmission towers lack relatively complex topological configuration changes, and it is difficult to systematically convert the configuration of tower leg auxiliary materials

[0005] 2) When the ordinary artificial fish swarm algorithm is used for structural optimization, the optimization speed is slow, and the optimization efficiency needs to be improved, which will easily cause the problem of poor optimization results

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