本文将具有高度非线性的钢筋混凝土平面框架的优化设计问题按照整体性约束与局部性约束分成两级处理,各自进行迭代计算:第一级选择一个在最不利的水平荷载作用下满足整体性位移约束条件以及尺寸等其它约束条件的最柔结构;第二级再在第一级的基础上选择满足局部性的强度、配筋率、尺寸及其它规范要求的约束条件的造价最低的结构。 In this paper, the optimization design problem of highly nonlinear reinforced concrete plane frames is divided into two levels according to the overall constraints and local constraints, and they are each calculated iteratively: The first stage chooses one to meet the overall displacement under the most unfavorable horizontal load. Constraints and other constraints, such as size, are the most flexible structures; on the basis of the first level, the second stage selects the lowest cost structure that satisfies the local strength, reinforcement ratio, size, and other regulatory requirements.