The structure of a bridge crane is optimized and the results shows that it is a better way to deal with discretization problem in engineering, compared with MDOD and improved genetic algorithm.

• 通过对桥式起重机金属结构进行优化，其结果与MDOD和改进遗传算法2种的结果进行比较，表明此算法能够很好处理工程离散化问题。