Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Abstract

Gable roof buildings are widely used in industrial buildings. Based on wind tunnel tests with rigid models, wind pressure distributions on gable roof buildings with different aspect ratios were measured simultaneously. Some characteristics of the measured wind pressure field on the surfaces of the models were analyzed, including mean wind pressure, fluctuating wind pressure, peak negative wind pressure, and characteristics of proper orthogonal decomposition results of the measured wind pressure field. The results show that extremely high local suctions often occur in the leading edges of longitudinal wall and windward roof, roof corner, and roof ridge which are the severe damaged locations under strong wind. The aspect ratio of building has a certain effect on the mean wind pressure coefficients, and the effect relates to wind attack angle. Compared with experimental results, the region division of roof corner and roof ridge from AIJ2004 is more reasonable than those from CECS102:2002 and MBMA2006.The contributions of the first several eigenvectors to the overall wind pressure distributions become much bigger. The investigation can offer some basic understanding for estimating wind load distribution on gable roof buildings and facilitate wind-resistant design of cladding components and their connections considering wind load path.

Wind Tunnel Testing and Validation of Helicopter Rotor Blades Using Additive Manufacturing

“…Wind tunnel testing is not only applicable to flying vehicles. It is also applicable for automobiles, buildings, or moving or flowing objects [9,27].…”

“…e pitot-static tube measures total or stagnation pressure and static pressure. Dynamic pressure relates the velocity and pressure, so from the relations, we can find the velocity with the help of pressure [27,28].…”

Vulnerability of Buildings to Meteorological Hazards: A Web-Based Application Using an Indicator-Based Approach

“…According to Keote et al [27], buildings with a pyramidal roof experience a lower uplift force in comparison with buildings with a gable or a hipped roof. However, wind characteristics (wind direction and angle) [28] as well as the slope of the roof [29] also play a role. A dormer window can be damaged dramatically by a windstorm if it is not protected by a shutter or with a good glazing type [30].…”

Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

“…The paper [4] discusses the phenomenon that the suburban exposure produces lower wind loads than those experienced in the open country and compares the local pressures on low buildings with gable roof. Another paper, [5] analyses the wind pressure on gable roof buildings, through comparisons with existing results and relative wind load codes. In [6], the pressure spectral values are compared for both wind tunnel and full-scale measurement.…”