广州鹤洞大桥相似模型结构动态特性试验

Full Bridge Model Test of Structural Dynamic Characteristics forHedong Bridge in Guangzhou

索吊桥的模态参数是检验有限元动态数字模型，预估颤振和计算抖振的非常重要的依据。针对鹤洞桥结构模型的对称性，在动力特性试验中采用了分离模态法，并且在数据采集和信号分析中进行了合理的参数选择，从而确保了试验精度。

The modal parameters of the cablestayed bridge are very important data in checking FEM dynamic mathematic model, predicting flutter and calculating buffet. Due to the structure symmetry of Hedong bridge model, the separation modal method is applied in dynamic characteristic test and reasonably various parameters were adopted in data sampling and signal analysis, so that the accuracy of the test is assured.