Reynolds Number Effect Of Streamline-like Bridge Deck Section Static Coeffcient And Surface Pressure

Many domestic and foreign scholars have raised the problem about theReynolds-number effects of bridge cross section in early time. They also didsome researches for this, and gain several achievements at the same time.Whereas, most of wind tunnel tests are carried on under the condition of lowReynolds-number due to the restriction of the wind tunnels’ qualification, forthis reason, which makes the data of wind tunnel test exist Reynolds-numbereffects that can’t use for the full scale bridge directly what will cause errors.Although, scholars are aware of the wind attack angles have Reynolds-numbereffects of bridge deck section, but their study are still remain for the angle of0°. On account of the disadvantage of researches of Reynolds-number effects,some more studied are as following:In this study, the cross section which similar to the section of Xia-ZhangBridge will be taken as the engineering background. The three aerodynamiccoefficients which obtain from tests that are carried on under relatively highReynolds-number for different wind angles of streamline cross section will bestudied. Meanwhile, some results will be attained. In the paper, the surfacepressure coefficients of streamline cross section and Reynolds-number effectsare studied. There are two main contents in this research, the one is thevariations of surface pressure coefficients of different wind attack angles ofstreamline cross section under diverse Reynolds-number, the other is for thesame thing under the same Reynolds-number, then draw the conclusions.