This paper present some selected numerical results of a typical super-tall building based on a new Large Eddy Simulation scheme. The spatial correlation of local wind forces were presented and discussed in detail. The probabilistic characteristics of fluctuating wind loads were evaluated. Furthermore, the along-wind and across-wind spectral characteristics were studied and compared with the von Karman spectrum. The output of this study is expected to be of considerable interest and practical use to professionals and researchers involved in the design of super-tall buildings.

Through the wind tunnel test on the opening of different locations and local areas in vulnerable areas of low-rise building roofs, the distribution characteristics of wind pressure inside and outside the roof caused by roof damage. The results show that the influence of the wind direction angle on the internal pressure caused by the wind is obvious, and the internal pressure caused by the opening on the leeward surface is small and the change law is obviously different from that on the windward surface. The correlation coefficient on the inner side of the roof opening is higher than that on the side of the unopened roof, and the correlation between wind pressure on the measurement points near the opening is larger than other regions.

A case study on the internal pressure induced by a local failure on the vulnerable gable roof of a low-rise building was extensively conducted experimentally and numerically. Five roof opening configurations were tested in the wind tunnel under three different boundary layer conditions, based on 1:40 scaled models. The effects of opening shape, opening position, opening ratio, building internal volume, and wind speed on peak transient and steady-state internal pressures were studied. The study results indicate that the peak transient and steady-state internal pressures and the corresponding transient overshoot ratio all increase with an increasing opening ratio. The peak steady-state internal pressure is little affected by the approaching wind speed; while the peak transient internal pressure coefficient shows a significant linear relationship with the wind speed. The coupling effect of vortex shedding and Helmholtz resonance in double building volume compensation situation may cause larger fluctuating internal pressure. Both the vortex shedding and Helmholtz resonance reduce the internal pressure coherence to some extent. The agreement between the numerical and experimental results is much better for the mean internal pressure than that for fluctuating internal pressure or peak internal pressure.

model,the Reynolds Averaged Navier-Stokes Equations (RANS) turbulence model, was added in software Fluent 6.3 to simulate the wind tunnel model of Tokyo Polytechnic University and the simulating results were compared to the wind tunnel test data. Then a detailed parametric study is performed for average pressure coefficient of two low-rise gable roof buildings in the same shape which only change the angle of the downstream building. The results show that the mean wind pressure coefficient of upstream building is hardly affected by the angle changing of the downstream building when the distance between buildings is larger than twice of building's width, while the downstream building is affected relatively large especially at the corner area of ridge at small angles.

In order to study the wind pressure distribution characteristics of rectangular roof structure, the canopy gas station as the prototype manufacture of 1:20 scaled model, pressure test was carried out under the typical suburb wind field in wind tunnel.Rectangular roof was divided into different bands according to the flow characteristics. Firstly, qualitative analyse the distribution of the mean wind pressure on structure's surface.Secondly,choose different measuring points in bands,analyse power spectral density function in frequency domain and correlation coefficient in time domain of the wind pressure.The results show that the upper surface pressure distribution is mainly affected by the columnar vortex separation and lower surface wind pressure distribution is related to the interference of column,the surface net pressure distribution was affected by both columnar vortex separation and support column.Correlation of wind pressure is weakened in the windward front local region of the structure and the wake region of the support column. The wind pressure power spectrum of the structure surface is mainly related to the relative position of the flow,the support column increases the wind energy in the front and rear regions,which is harmful to the structure.