Abstract
To consider aeroelastic instabilities of prismatic high-rise buildings in strong winds, unsteady aerodynamic forces must be investigated as the external forces acting on buildings. In the previous paper we presented the characteristics of fluctuating pressures on side face of the oscillating square prism (depth-breadth ratio D/B=1). This paper presents the characteristics of fluctuating pressures of other two type rectangular prisms, which are flow reattachment model (D/B=2) and complete separation model (D/B=0.5). And the comparison of three type prisms(square and two type rectangular prisms) is discribed. The characteristics of the pressures on the lower parts of square prism are similar to that of D/ B=0.5 rectangular prism, on the other hand the characteristics of the pressures on the higher parts of spuare prism are similar to that of D/B=2 rectangular prism.
