论文信息 - Wind Loads on Low Building Roofs: A Stochastic Perspective

Wind Loads on Low Building Roofs: A Stochastic Perspective

A comprehensive experimental study of local wind pressure fluctuations on low building roofs has been carried out, by testing a variety of building models exposed to open and suburban boundary-layer flows, for various wind directions, to determine the overall stochastic characteristics of wind loads on roofs. The analysis of pressure data indicates that the pressure fluctuations are sensitive to tap location, roof geometry, and wind direction. Both Gaussian and non-Gaussian fluctuations have been found in all roof types; however, non-Gaussian fluctuations are generally found in flow separation zones. Zones of Gaussian and non-Gaussian pressure fluctuations are presented. Relevant stochastic characteristics of wind pressure fluctuations in time, frequency, and amplitude domains are discussed.

Theodore Stathopoulos | K. Suresh Kumar | T. Stathopoulos | K. Kumar

[1] Theodore Stathopoulos,et al. Power spectra of wind pressures on low building roofs , 1998 .

[2] Theodore Stathopoulos,et al. Wind loads on low-rise buildings: a review of the state of the art , 1984 .

[3] B. Bienkiewicz,et al. Local wind loading on the roof of a low-rise building , 1992 .

[4] Nicholas P. Jones,et al. National Wind Hazards Reduction Program , 1995 .

[5] H. Kawai,et al. Characteristics of fluctuating suction and conical vortices on a flat roof in oblique flow , 1996 .

[6] Theodore Stathopoulos,et al. Design and fabrication of a wind tunnel for building aerodynamics , 1984 .

[7] Holger Koss,et al. BEATRICE Joint Project: Wind Action on Low-Rise Buildings: Part 1 - basic information and first results , 1996 .

[8] Kumaresannair Suresh Kumar,et al. Simulation of fluctuating wind pressures on low building roofs , 1997 .

[9] N. Isyumov,et al. Wind tunnel studies of buildings and structures , 1998 .