Numerical Simulation Of Wind Pressure And Wind Induced Response On The High-rise Building

With the increase in height of the building,wind load effects will become more and more important. Structural vibration calculation is based on the "structures load standard" (GB50009-2001), which is commonly carried out through a simplified calculation method, the accuracy of such method is worth discussing when applying to complex structures.In this paper, the wind loads and wind-induced vibration of high-rise building models was simulated by computational fluid dynamics method. The method can take both the spatial-temporal correlation of wind and the higher-mode influence into account,thus the wind-induced vibrations can be described more accurately.This paper first uses the computational fluid dynamics software CFX to analysis the wind load of the CAARC standard tall building full-scale rigid model by separately using the k-εmodel, SST model and BSL model. Secondly, considering the FSI problem,ANSYS Multi-field solver-multiple code coupling (MFX) was applied to carry out the numerical simulation,which combined ANSYS Mechanical and CFX analyse the dynamic response of the CAARC elastic model and surface wind pressure. The wind pressure distribution and displacement-time curve of CAARC elastic model in the wind field was obtained. Finally, in considering the FSI problem, A real high-rise buildings WuxiMaoyecheng was simulated by the use of ANSYS and CFX. The wind pressure distribution and flow field velocity distribution, and the floor of the displacement curves was obtained. In addition, according to the codes, Wuximaoyecheng were analyzed by the use of ETABS. The displacement of each floor was obtained and compared with the ANSYS calculation results. In contrast, the considered FSI problem of ANSYS MFX calculations is greater than the results of ETABS methods which according to the codes, indicating fluid-structure interaction effects on the structure of high-rise building should be considered in the wind load calculation.