识别桥梁拉索基频的一种实用方法

斜拉索是现代斜拉桥最重要的结构构件，索力在斜拉桥的施工控制和长期监测中起着重要作用。振动测试法是斜拉桥索力测定、监测和状态评估中应用最广泛的一种方法。振动法测试索力的关键在于准确地识别出索的基频。文章介绍了一种识别拉索基频的实用方法，应用该方法对某斜拉桥拉索的索力进行实测，数据结果表明该方法可行。

A Practical Method of Identifying the Fundamental Frequencies of Stay Cables

Stay cables are the most critical structural components in modem cable - stayed bridges. The cable tension plays an essential role in the construction control and long - term monitoring of cable - stayed bridges. Experimental vibration measurement is one of the most widely used methods for tension evaluation and condition assessment of cable - stayed bridges. There is a unique relationship between the tension force and fundamental frequency of the stay cable. An practical method of identifying the fundamental frequencies of stay cables is put forward in this paper. And it has been applied in the test of cable tension of practical bridge, and the data show that the method is feasible.