Optimization Design of Crane Box Girder Based on the Improved Polyclonal Selection Algorithm

On the basis of the polyclonal selection algorithm, an improved polyclonal selection algorithm based on negative selection is put forward in this paper. Inspired by the diversity and auto-tolerance of the negative selection, the population diversity is increased by the clone deletion and clone supply to improve the polyclonal selection algorithm. Finally, the optimization design of the crane box girder is realized based on the improved polyclonal selection algorithm.