Effect of twist of section and orientation on pedestrian wind environment around buildings
Based on wind tunnel tests and the assessment theory of pedestrian wind environment,the pedestrian wind environment around super high-rise buildings with basic sections such as square,rectangular,elliptic and their corresponding helical buildings were studied,and the comfort and safety of pedestrian wind environment around the building with different orientations and rotation angles were investigated.The results show that the change of orientation has little influence on the pedestrian wind environment of square buildings,while has great influence on the biaxial symmetrical cross section building such as rectangles and ellipses.If the short side of buildings is perpendicular to the dominant wind direction,the pedestrian wind environment around the building can be significantly improved.The twist of section changes the effect of orientation variation on pedestrian wind environment,and the pedestrian wind environment assessment results of helical buildings and basic buildings show an opposite trend with the increase of orientation.The section rotation is not conducive to the distribution of pedestrian wind environment around the square building.For rectangular and elliptic buildings,the twist of section can reduce the impact of orientation changes on pedestrian wind environment.The research results prove the influence law of the rotation angle of cross section and orientation change on the pedestrian wind environment around the super high-rise building with basic sections.
pedestrian wind environmentsuper high-rise buildingtwist of sectionorientation
NETL
NSTL
万方数据
