円弧屋根骨組の設計用風荷重について

概要

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This paper describes on the wind loads for the design of frames supporting a barrel roof. The stress of arched frame induced by the fluctuating wind pressures evaluates based upon wind tunnel test. The wind tunnel tests are carried out in turbulence boundary layer wind of power law index α=1/4. The experiments are carried out by the barrel roof model of rise span ratio h/H=0.25. The fluctuating pressures acting on the roof are measured with Multi-Channel Pressure Measurement System. The instantaneous bending moments, shear forces and axial forces of the arched frames are computed. The characteristics of the stresses, such as bending. moment, shear forces and axial forces are discussed. It is found that the mean bending moments and mean shear forces are nearly zero in the case of the frame of across-wind direction. The gust factors of the load effects are compared with those of beams supporting flat roof.
一般社団法人日本建築学会の論文
1996-03-20