Abstract: Taking Beijing Tiananmen as an object, wind pressure and wind field around ancient buildings of tower style with multipleeave and doublepitch roof are simulated numerically by using software ANSYS Fluent and Renormalizationgroup k-ε turbulence model. The laws of wind pressure and wind field of the buildings under different wind directions are investigated. Then the influences of key parameters are indicated, including the close or open platform as well as curvature slope or linear slope of roof. The results show that wind direction has a great influence on the wind pressure of roof and double eaves. In the case of open platform, the velocity of air flow around the building reduces while negative wind pressure on the roof and double eaves decreases. Linear slope can reduce the air flow velocity at roof and double eaves and it increases the air flow velocity between double eaves. After wind pressure on the building without surrounding barrier is analyzed, wind load shape coefficients for the windresistance design of this kind of the ancient buildings are recommended.

Key words: ancient building with multipleeave and doublepitch roof, wind pressure distribution, wind flow