Abstract：It is necessary to predict the aerodynamic load on buildings near the track due to high-speed train passage for designing these buildings and determining their limit. Cross-line bridge is a typical building near the track, the train-induced flow and its aerodynamic effects on bridge surface can not be ignored. Based on the pressure measured experiments of cross-line bridge, wavelet transform was made of the collected pressure, analysis of the surface pressure fluctuation characteristics and identification of the pressure distribution in different frequency bands were conducted. Analysis show that surface pressure component in low frequency band is large, while in high frequency band is relatively small, wind energy in low frequency band is large and small in high frequency band. The low frequency part of wind pressure has large impact on cross-line bridge, while the impact caused by high frequency components is small. Wavelet analysis is helpful to the study of wind pressure on the cross-line bridge surface. The analysis and application methods are worth further investigation.
2015, Vol. 34 
