在一个静不定结构中,由于结构部件的力取决于其尺寸大小且降低成本费用也相当复杂,因此,有必要对其进行系统的优化设计。本文针对柱状支撑的油管线,在满足设计约束的情况下,采用管状桁架进行强度优化,从而达到降低造价的目的。管状桁架中的内力是由一个挠度方程导出的。设计约束与优化前管线和桁架构件的应力、桁架接头的强度和几何形状有关。成本包括材料费、支柱切削费、装配费、焊接费和喷漆费。 In a static structure, because the force of the structural part depends on its size and the cost of reducing the cost is also quite complex, so it is necessary to optimize the system. In this paper, the tubular support of the oil pipeline, to meet the design constraints, the use of tubular truss strength optimization, so as to achieve the purpose of reducing costs. The internal force in the tubular truss is derived from a deflection equation. The design constraints are related to the stresses of the pre-optimized pipelines and truss members, the strength and geometry of the truss joints. Costs include materials costs, pallets cutting costs, assembly costs, welding costs and painting fees.