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中文摘要：
气动导纳是描述大跨度桥梁断面抖振气动力的关键环节，现存的各种导纳函数识别方法以及经典的Sears函数均与试验结果存在着不小的误差．为此，在研究中摈弃相关的假定，引入了考虑6个导纳的互谱导纳识别方法，通过Sears函数的数值模拟识别验证了导纳识别结果的正确性，同时对识别方法的精度进行了初步探索．
英文摘要：
Aerodynamic admittance is a key but currently recognition methods and Sears factor to describe the function have innegl buffeting forces on a bridge deck, ected deviations with wind tunnel results. So we abandon some correlative assumes, induce cross -correlation spectrum recognition method which can recognize six admittance, and use numerical simulation of Sears function to validate this method result, at the same time, do some effort to improve the recognition precision.
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