等边角钢四肢方阵式格构柱截面的优化设计

在钢结构格构柱截面设计中，要保证结构的安全又要考虑节约用料，而格构柱截面宽度正是能体现安全和经济又重要要求的重要几何参数，考虑有关格构柱构造要求，根据准则优化法，以格构柱用钢量为目标函数，分缀板式和缀条式，导出等边角钢四肢方阵式格构柱截面宽度和选用角钢型号的直接设计公式，计算结构表明，该设计具有安全、经济和简明的特点，便于工程实际应用。

Optimizingly Designing the Section of the Trellis Columns of Angle Steel with Equal Legs and in Quadruped Square Matrix

In designing the section of the trellis column of steel structure, both safety of construction and saving of material should be considered. The width of the section of trellis column is exactly the important geometric parameter embodying the demands of safety and economy. Taking the demand of the construction of trellis column into account and taking steel consumption of trellis column as objective function, a formula based on criterion optimization is derived, in the types of lace plate and lace bar, for directly designing the width of the section of trellis columns of angle steel with equal legs and in quadruped square matrix as well as the model of angle steel to be chosen. As shown by the results from calculation, the author's design is safe, economic and concise; it is convenient for practical application to engineering.