为了分析不同频率噪声对钢箱梁应力的影响,首先结合同期气象资料建立实测数据与主要影响因素之间的相关关系;其次,采用小波多尺度分析方法对实时测量数据进行分解和重构,并依次剔除噪声引起的结构响应.研究结果表明,采用小波多尺度分析方法处理后的数据更能精确地反映钢箱梁真实的应力响应. In order to analyze the effect of different frequency noise on the stress of steel box girder, the correlation between the measured data and the main influencing factors is first established based on the meteorological data of the same period. Secondly, the wavelet real-time data is decomposed and reconstructed by wavelet multi-scale analysis Followed by eliminating the structural response caused by noise.The results show that the data processed by wavelet multi-scale analysis method can more accurately reflect the real stress response of the steel box girder.