Buffeting performance of bridge tower under yawed wind during construction

In order to study the influences of different wind speeds and wind yawed angles on the buffeting performance of bridge tower during construction, a wind tunnel test of bridge tower aeroelastic model was made based on considering the action of tower crane.Test result shows that the buffeting displacement responses increase with the increase of wind speed, have a trend of conic curve approximately, the buffeting responses of bridge tower with the increase wind yawed angle is not monotonous, the longitudinal and lateral buffeting responses of bridge tower can reach their maximal values under non-cross wind attack; the maximal value during construction is 0.274 6 m under design wind speed, which is acceptable to the project, the test result of RMS(root mean square)is significantly greater than the analysis result in time domain, so buffeting analysis should consider the influence of construction stages and machineries in wind tunnel test.