具有稳定约束桁架结构的优化设计

Optimal Design of the Trusses Structure With Buckling Constraints

对于型钢、组合截面工字钢所构成的大跨度、重载下的桁架钢结构,在满足强度、位移、刚度及稳定约束条件下,以结构重量最轻为目标,进行结构优化设计。文章重点讨论如何处理稳定及刚度约束。文后作了实例计算,结果表明,处理方法是合理的。

This paper considers optimal design of the trusses structure with strength,deflection,Stiffness and buckling constraints.Objective function is minimum weight of structures.The structure supports heavy load and has large span.The shape of structure section is shape I or compound shape I.The paper mainly discusses how to treat buckling and stiffness constraints.The result of the example indicates that the method is reasonable.