The fuzziness of various constraints of stress, displacement, local buckling and section size is considered in the fuzzy optimum design of drilling rig substructures.

• 考虑了应力约束、位移约束、局部稳定约束和截面尺寸上下界约束条件的模糊性,以底座的结构质量为目标函数,建立了底座结构模糊优化设计的数学模型。