STUDY ON SURFACE WIND PRESSURE AND PEDESTRIAN WIND ENVIRONMENT OF SUPER HIGH-RISE BUILDINGS

In the study of urban wind environment, there are many previous studies on the changes of air flow and wind environment in high-rise buildings, and the interaction with the auxiliary structure of high-rise buildings cannot be ignored. This paper tests the wind load on the surface of the group buildings through a wind tunnel test and studies the changes of the wind load on the surface of the auxiliary tower and podium. The results show that: the secondary tower is on the side close to the main tower, and the shape coefficients of the measuring points are scattered, and the shape coefficient value decreases with the height. In the presence of disturbing buildings, the effect of ground roughness on the shape factor of the measuring points on the secondary tower is negligible. Under observation conditions 1 and 3, the body shape coefficient of C1 is more sensitive to whether there is interference or not, and the figure coefficient is weakened by 26% when there is interference with the building. The shape factor is weakened by 26% when there are disturbing buildings. At a wind direction angle of 90 °, the incoming wind flows backwards through the top of the secondary tower and its surroundings, and the downdraft generated by the part of the airflow will reduce the wind suction of the main tower skirt house.