Numerical Simulation And Experiment Analysis Of Wind Loads On Super-high Buildings

With the development of science & technology and the shortage of land requirement, the height and the density of modern city structures are getting higher and more in order to meet the need of increasing population. Meanwhile, it also brings a new challenge to the construction of super-high buildings, especially the way of wind engineering design. There is no concrete prescript for the wind load characteristic of the Super-high buildings at the present criterion, but there is a requirement which determine the shape coefficient of the Super-high buildings from the wind tunnel tests. At the same time, the surrounding buildings also influence the buildings'shape coefficient. This paper is based on the method of numerical simulation and wind tunnel test to study the wind character of the Super-high buildings, and its background is Chongqing Tiancheng Building. Main works include these following aspects:(1) Based on the software of Fluent 6.2, built the numerical model of Tiancheng Building and analyzed the model. Through analyzed the cloud picture of the building's surface pressure distribution, got the disciplinarian of the surface pressure distribution on Tiancheng Building. This result can direct the wind tunnel test.(2) Through analyzed the result of the wind tunnel test at different wind angle, got the disciplinarian of the building's shape coefficient.(3) In order to analyze the influence of the surrounding building to the wind character of Tiancheng Building, simulated two instances (only analyzed Tiancheng Building and analysed Tiancheng Building with the surrounding buildings which are not far away 500-meters from Tiancheng Building) in the numerical simulation and the wind tunnel test. Through compared the wind pressure character of the above two instance, analysed the influence of the surrounding buildings.(4) Through analyzed the building's shape coefficient from the wind tunnel test at different high of Tiancheng Building, studied the disciplinarian of the shape coefficient as the change of the building high.