斜拉索作为斜拉桥的关键部件之一,其索力分布和动态响应直接影响到桥体结构的安全性、稳定性和使用寿命。斜拉索的力学特性具有复杂的非线性特征,而大跨度桥梁的增加使得拉索长度增加,极易发生大幅非线性振动。随着对结构健康监测需求的增加,如何准确识别和监测斜拉索的索力成为了斜拉桥健康监测和性能评估中的重要问题。As one of the critical components of cable-stayed bridges, the cable force distribution and dynamic response of stay cables directly affect the safety, stability, and service life of the bridge structure. The mechanical characteristics of stay cables exhibit complex nonlinear features, and the increase in the length of stay cables due to the rise in large-span bridges makes them highly susceptible to significant nonlinear vibrations. With the growing demand for structural health monitoring, accurately identifying and monitoring the cable force of stay cables has become a significant issue in the health monitoring and performance evaluation of cable-stayed bridges.
