球形ドームの屋根面に作用する風圧力の性状と屋根面の動的挙動

概要

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The purpose of this paper is to clarify the characteristics of wind pressure on the spherical domes and to evalute the dynamic response of spherical domes. As the first step, the characteristics of static and dynamic wind pressure on the surface of rigid spherical domes are tested through wind tunnel experiment. And at the second step, we treat the response of the spherical dome as a buffetting problem after the method of modal analysis. The following properties became evident. (1) Difference in fully developed turbulent bundary layers has little effects upon the time-averaged wind pressure coefficients on the surface of spherical domes. (2) R. M. S. wind pressure coefficients are in proportion to turbulence intensity of oncoming flow. (3) Power spectra and spatial correlation of fluctuating wind pressures are approximated by simple equations. (4) The contribution of the resonance part to the variance of displacement is small. (5) The displacement (both R. M. S and maximum) is proportinal to a square of wind velocity.
社団法人日本建築学会の論文
1989-10-30