With specific project example, this paper adopts rigidity support continuous beam method, force balance method, stiff hanger method and energy method to determine the rational cable force by using ANSYS software. And then, take advantage of influence matrix method to correct the stiff hanger method. In the end, point out that the method synthesizing stiff hanger method influence matrix method and constrained optimization method on the basis of energy method are more reasonable solution methods. The analysis methods can be referenced for this kind of bridge design.%结合具体的工程实例，利用ANSYS有限元分析软件，分别采用刚性支承连续梁法、内力平衡法、刚性吊杆法和能量法对其成桥索力进行了优化设计，并利用影响矩阵法对刚性吊杆法进行了修正，最后，经过对比分析指出了结合影响矩阵法的刚性吊杆法和基于能量法原理的有约束优化法是较为合理的求解方法，以期为同类桥梁设计提供参考。
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