An offshore platform wind-shield wall height design method

The invention discloses an offshore platform wind-shield wall height design method which comprises the following steps: determining a winter prevailing wind direction of a sea area according to the sea area where an offshore platform is located; according to the main wind direction in winter and the direction of the offshore platform, determining the arrangement position and the arrangement range of the wind-shield wall on the offshore platform preliminarily; according to the condition that the area of the periphery of the offshore platform surrounded by the wind-shield wall does not exceed 50% of the total area of the periphery surrounded by the wind-shield wall, determining the initial height H1 of the wind-shield wall; and according to the initial height H1 of the wind-shield wall, determining whether the offshore platform is in a full ventilation environment and determining a design value of the height of the wind-shield wall. According to the offshore platform wind-shield wall height design method, a pro