Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Aerodynamic effect of wind induced torsion on tall buildings
AbstractFour different model buildings were tested in a boundary layer wind tunnel to investigate wind induced torsion on tall buildings. Each model's cross section corresponded to a basic shape; Rectangular, Diamond, Triangular and D-shaped. Properties such as aspect ratio, building density and damping were kept constant. Each model was tested at varying reduced velocities and angles of wind incidence under wind excitation corresponding to Terrain Categories 2 and 4 as set out by AS 1170.2-1989. Results indicate that the torsional response varies dramatically with changes in building cross section. The Triangular shaped model produced a dynamic torsional response far in excess of any other model tested. Torque spectra for the Triangular and Rectangular models indicated that at certain angles of wind incidence and reduced velocity, wake induced and flow reattachment induced torsion was evident. The D-shape and Diamond models yielded significantly lower torsional response.
Aerodynamic effect of wind induced torsion on tall buildings
AbstractFour different model buildings were tested in a boundary layer wind tunnel to investigate wind induced torsion on tall buildings. Each model's cross section corresponded to a basic shape; Rectangular, Diamond, Triangular and D-shaped. Properties such as aspect ratio, building density and damping were kept constant. Each model was tested at varying reduced velocities and angles of wind incidence under wind excitation corresponding to Terrain Categories 2 and 4 as set out by AS 1170.2-1989. Results indicate that the torsional response varies dramatically with changes in building cross section. The Triangular shaped model produced a dynamic torsional response far in excess of any other model tested. Torque spectra for the Triangular and Rectangular models indicated that at certain angles of wind incidence and reduced velocity, wake induced and flow reattachment induced torsion was evident. The D-shape and Diamond models yielded significantly lower torsional response.
Aerodynamic effect of wind induced torsion on tall buildings
Beneke, D.L. (Autor:in) / Kwok, K.C.S. (Autor:in)
Journal of Wind Engineering and Industrial Aerodynamics ; 50 ; 271-280
01.01.1993
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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