抄録
In order to study the wind pressure distributions and the response of a suspended roof due to turbulence, model experiments were made in wind tunnel. The model used in tests had a size of 41×31cm, a height of 18cm and roofed by a soft vinyl membrane. In measurement of the wind pressure distributions, the wind velocity was about 22m/sec and 28m/sec. On the other hand, fluctuating wind forces and vibrations of the roof were measured under the wind velocity 13.5, 17.5 and 21.5m/sec, in five different directions relative to the model. Fig.2 to 8 show the the wind pressure coefficients obtained by the tests. Fig.9 and 10 show a part of fluctuating wind force records and vibration records of the roof. Displacements of the membrane are shown in Fig.11 and 12. It will be important to make clear the relation between the fluctuating wind force and the vibration of the membrane, and also the dynamical characteristics of actual roofs in future study.
