斜拉桥是高次超静定结构,结构计算非常复杂,确定合理的成桥索力是斜拉桥静力计算的前提,本文探讨了斜拉桥成桥索力的计算理论方法,应用最小弯曲能量法计算重庆某公路大桥的成桥合理索力,并对部分不合理的索力进行了优化调整,并对成桥状态进行了初步的静力分析,得到了较为理想的结果。 Cable-stayed bridge is a high degree of statically indeterminate structure, the structural calculation is very complex, to determine the reasonable cable tension is a prerequisite for the static calculation of cable-stayed bridge. This paper discusses the calculation theory of cable tension of cable-stayed bridge, Bending energy method is used to calculate the reasonable cable force of a highway bridge in Chongqing, and some unreasonable cable forces are optimized and adjusted. The initial static analysis of the bridge construction is completed, and the ideal result is obtained.