自锚式悬索桥吊索索力检测及计算方法

Cable force detection and calculation method of self-anchored suspension bridge

目前桥梁检测中广泛使用的悬索桥索力测试方法是索力振动测试方法,该方法操作简单,可以重复检测索力。但是面对不同的桥梁实际情况需要检测人员进行针对性的分析才能得到更加真实的索力状态,检测过程中主要对吊索两端约束条件、抗弯刚度以及测试温度三个方面进行考虑,通过选取合理的计算长度、边界条件、抗弯刚度计算得到合理的索力。基于西宁市文汇自锚式悬索桥桥梁检测中对索力检测结果处理和计算,总结了自锚式悬索桥吊索力检测和计算方法,通过该方法得到了合理准确的索力结果。

At present,the cable force testing method of suspension bridge widely used in bridge testing is the cable force vibration testing method.This method is simple to operate and can detect the cable force repeatedly.However,in the face of the actual situation of different bridges,the inspectors need to carry out targeted analysis in order to obtain a more real cable force state.In the detection process,the constraints at both ends of the sling,bending stiffness and test temperature need to be considered,and the reasonable cable force can be calculated by selecting reasonable calculation length,boundary conditions and bending stiffness.Based on the processing and calculation of cable force detection results in the detection of Wenhui self anchored suspension bridge in Xining City,this paper summarizes the detection and calculation method of sling force of self anchored suspension bridge,and obtains reasonable and accurate cable force results through this method.