Surface Wind Pressure Characteristics of Staggered Layout Lightweight Double Slope Houses(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2017年03期
- Page:
- 91-102
- Research Field:
- Publishing date:
Info
- Title:
- Surface Wind Pressure Characteristics of Staggered Layout Lightweight Double Slope Houses
- Author(s):
- YAN Wei-heng; LI Ren-xin; WU Yan-ru; HE Li-yong
- School of Civil Engineering, Chang’an University
- Keywords:
- lightweight double slope house; computational fluid dynamics; numerical simulation; staggered layout; interference factor; wind environment
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to study the surface wind pressure distribution characteristics and wind environment around staggered layout lightweight double slope houses, the fluid dynamics analysis software FLUENT was applied to study the key techniques and parameters, such as domain size, the number of grid and turbulence model, and a numerical wind tunnel model of double slope houses was established based on fluid dynamics principle and atmospheric boundary layer theory. Taking the transverse density coefficient, longitudinal density coefficient and wind direction angle as parameters, the wind pressure distribution characteristics of 60 kinds of numerical wind tunnel conditions on light double slope buildings were studied, the surface wind pressure distribution law of houses under windinduced interference effect was obtained. Through introducing the interference factor, the disturbed degree of relatively single house in target groups was quantified, and the shape coefficient of houses was obtained.The wind speed of house monitoring points in 90° wind direction angle was calculated, and the outdoor wind environment was evaluated by wind speed ratio index. The results show that the longitudinal spacing of staggered layout houses without interference is 4L (L is the length of house) and transverse spacing without interference is 5B (B is the width of house) in 90° wind direction angle; outdoor wind environment is better when spacing of buildings transverse is 0.5B and longitudinal spacing is 2L-4L.
Last Update: 2017-05-31