In this paper

the basic functions and design methods of Lanzhou-Xinjiang high-speed railway anti-wind tunnel were introduced.Based on computational fluid dynamics principles

the basic mathematic model and the control equation of the wind load in strong wind condition of the tunnel was analyzed.According to the assumed calculating conditions and reasonable setting of boundaries

anti-wind tunnel numerical analysis model was established by finite volume method. Besides

three types of condition which are flat section

the shallow cuts lot and embankment lot under the wind speed of 70m/s

60m/s

50m/s

40m/s respectively were simulated and calculated.Results show:（1）the wind load on various parts of anti-wind tunnel with holes rises with the increase of the wind speed;（2）the wind pressures on all the windward sides are positive

the positive pressures on the flat sections are similar to that on embankment lots

and are 3202Pa under a maximum wind speed of 70m/s;（3）the wind pressure on vault and leeward sides are negative and the shallow cuts lot suffers the largest negative pressure

in which the vault bears-3550Pa under a maximum wind speed of 70 m/s;（4）the negative pressure on the leeward sides of all conditions are less than-1500Pa while the leeward wall foot and the leeward side wall suffer similar pressure;（5）under all circumstances

the negative pressure on the vault is the highest;（6）the wind load on various parts of anti-wind tunnel with holes is generally smaller than that on tunnels without holes;（7）there are reflux wind speed near the holes of anti-wind tunnel

which rises with the increase of outside wind speed.