本文闸明肋拱结构优化的研究成果,提出了大跨度肋拱的优化拱轴及其逼近方程,进而,给出了最大限度减小弹性压缩影响的优化截面形式及以最小体积为优化目标的合理矢跨比.它对大跨度渡槽、桥梁的任意静荷载下的合理肋拱结构设计,提供了新的途径. In this paper, the optimization of the structure of the sill ribs is studied. The optimization of the arch yoke and its approximation equations for the long-span rib arches are proposed. Furthermore, the optimized cross-section form that minimizes the effect of elastic compression is given and the minimum volume is taken as the optimization goal. Reasonable span ratio. It provides a new approach for the design of reasonable rib arch structure under the static loading of large-span aqueducts and bridges.