Research on Wind Environment and Wind Load of Low Rise Buildings Based on QSMA Technique and Feature Geometry

摘要

To research the wind environment and wind load characteristic of low rise buildings, the unsteady analysis on flow around typical cylinder, hemisphere, ellipsoid, as well as three feature geometries and combined feature geometry with similar topology is conducted by employing Quasi-steady Marching-on-in-time Approximation technique (QSMA). The similarity of wind flow of geometry with similar topology characteristic is analyzed according to streamline characteristic, turbulence kinetic energy and vortex structure. The feature body analysis method of wind field features based on QSMA technique is presented. The practical application of the method in a high-speed train station is discussed, which prove to be reasonable as compared with the wind load parameters of typical feature geometries in the code.