建筑结构优化的进退搜索算法

根据工程实际，充分考虑规范规定的约束条件和各项技术标准要求，建立了建筑结构优化模型。并提出了离散变量结构优化设计的进退搜索算法。算例结果表明，该方法能直接计算具有应力约束和截面尺寸约束的离散变量结构优化问题，也能处理同时具有稳定约束和位移约束的多工况、多约束、多变量的离散变量结构优化设计问题，是一种理想建筑结构优化设计方法。

Forward and Backward Searching Algorithm for Optimum Design of Building Structures

On the basis of practical engineering design, sufficiently considering constraint conditions that norm stipulated and demanded with various engineering standards,a model of structural optimization with discrete variables is derived. Moreover a forward and backward searching algorithm is presented for structural optimum design with discrete variables. Results by exemplification show that this method can not only be used directly to work out the optimum structural design with discrete variables to constraints stress and cross-section area, but also to deal with the discrete structural optimization featured with multi-loading, multi-constraints and multi-variables. It can be applied to optimum design of various building structures.