频率法测量索力的精度除依赖于高灵敏度的拾振技术外 ,还取决于准确的索力、频率对应关系。目前多采用解析法来描述索力、频率的对应关系 ,存在一定局限性。本文综合运用有限元法以及样条拟合技术来获取斜拉索索力与振动固有频率之间的关系 ,并将其应用于崖门大桥斜拉索索力实测中。通过与其他方法的结果进行对比 ,说明本文方法的正确性与实用性 Frequency method to measure the accuracy of cable in addition to rely on the high sensitivity of the pick-up technology, but also depends on the exact cable force, frequency correspondence. At present more analytical methods to describe the cable, the frequency of the corresponding relationship, there are some limitations. In this paper, the finite element method and the spline fitting technique are used to obtain the relationship between the cable tension and the natural frequency of vibration, and then applied to the cable tension measurement of the Yamen Bridge. By comparing with the results of other methods, the correctness and practicability of the method in this paper are illustrated