Aerodynamic Interference of Wind Loads on Roofs of Lowrise Buildings

Abstract:

According to a series of wind pressure measurement wind tunnel tests,the effects of area densities of surrounding buildings on distributions of wind loads on a flatroof building are studied.The test results indicate that when the area densities of the surrounding buildings increase,the conical vortices on the flat roof of the surrounded building for oblique wind directions will disappear gradually and the extreme values of suction pressures on different locations of the flat roof will decrease and become uniform.The maximum values of negative wind pressure on the flat roof of the surrounded building become 80%,30% and 20% of those of isolated buildings when it is surrounded by the buildings with the same geometric parameters but with different area densities of 0.1,0.3 and 0.6,respectively.