Method for designing bridge wind barrier

The invention discloses a method for designing a bridge wind barrier. The method comprises the steps that a a bridge wind barrier model is manufactured, a wind tunnel experiment is performed, and the form of the bridge wind barrier is determined; b binary quadratic polynomial fitting is carried out, and a fitting formula of the wind shield height x, the wind shield porosity y and the bridge deck wind speed reduction coefficient z is obtained; c the height x of the wind shield is determined, the bridge deck wind speed reduction coefficient z is controlled to be smaller than a set value and substituted into the fitting formula in the process b, and the wind shield porosity y is obtained through calculation; and d the wind shield height x and the wind shield porosity y are applied to the wind barrier form in the process a for design, and the final bridge wind barrier structure is obtained. According to the design method, guidance is provided for parameter design of the bridge wind barrier structure, the shieldin