Experimental study on urban wind environment influenced by adjacenthigh-rise building
Author:
Affiliation:
1.School of Civil Engineering,Changsha University of Science Technology,Changsha,China;2.School of Civil Engineering,Changsha University,Changsha,China
Urban wind environment is an important index to evaluate the quality of human life. In recent years, with the rapid development of the economy, more and more new high-rise buildings have been built and greatly changed the existing residential wind environment. It leads a great trouble to the normal life of the residents in the community. However, the target researches focus on this problem is still very scarce. In this paper, the Tongyong Shidai community is chosen as the case study, and the wind environment influenced by high-rise building is analyze by large scale wind tunnel (10m×3m×32m). Meanwhile, exceeding probability method is used to evaluate comfort degree and risk degree of the wind environment in current residential. The results show that the profile index values for average wind profiles and turbulence profiles are much higher than the values of standard, which indicates that urban area has greater surface roughness. The added high-rise buildings will significantly change the wind environment of the adjacent areas. When the tall building is added, the average wind speed in current community within 100m, 200m and 300m from the high-rise building is increased by 25%, 6% and 2%, respectively. The maximum value of the wind environment comfort and risk exceeding probability is increased by two times and six