考虑波面影响的海上栈桥构件气动特性试验研究

为研究海上栈桥构件在波面影响下的气动特性,现通过进行考虑波浪面气动干扰作用下,栈桥构件风洞测压试验,得到了栈桥构件在不同波浪条件下的气动力系数影响规律。试验结果表明:平行短边传播波浪对结构气动力系数影响大于平行长边传播波浪,且位于平行短边传播波浪的背风侧波腰时,波面气动干扰会使阻力、升力及扭矩系数均降低;平行短边传播波浪在90°风向角位置,对阻力系数的降低作用由波峰到波谷依次增强,在波峰处的部分风向角中,气动力系数较无波浪有所增大。

Experimental Study on Aerodynamic Characteristics of the Offshore Trestle Component Considering the Influence of Wave Surface

In order to study the aerodynamic characteristics of the trestle component under the influence of wave surface,this paper conducted wind tunnel pressure test of the trestle component under the influence of wave surface aerodynamic interference and obtained the influential law of aerodynamic coefficients of the trestle component under different conditions.Test results showed that the influence of the wave propagating parallel to the short side on aerodynamic coefficients was greater than that of the wave propagating parallel to the long sides,and the drag,lift and torque coefficients would reduce when the component at the waist of the wave propagating paralleled to the short side on the leeward side;when the component on the wave propagating paralleled to the short side in 90°wind direction,the effect of reducing the drag coefficient was increased from the peak to trough,and the aerodynamic coefficients in certain wind directions at the peak exceed those without wave.