Characteristics of Wind Pressure Distribution on Billboards on High Rise Building Roof

Abstract:

The wind pressure on four types of billboards on the high rise building roof， the arrangements of which were unilateral, adjacent, trilateral and peripheral, was measured with the rigid model pressure tests. The distribution characteristics of mean and fluctuating wind pressure coefficients on different types of billboards and the frequency domain characteristics of the fluctuating wind pressure of typical pressure taps on the surfaces of the panels were discussed. The results show that the mean wind pressure coefficients and fluctuating wind pressure coefficients on the surfaces of the panels of various arrangements are relatively larger in skew wind case, with the coefficients near the edge larger than those on the inner areas. The distribution of extreme wind pressure coefficients on billboards of various arrangements are also different. The maximum extreme wind pressure appears on the unilateral model and the minimum pressure appears on the peripheral model. Aerodynamic interference is observed on multi panel billboards.

Key words:high rise building; billboards on roof; wind tunnel test; wind pressure distribution; power spectra