浮上りが生じていない瓦に作用する風圧力の性状 : 実大建物による屋根瓦に作用する風力に関する研究 その1

Abstract

This paper describes the results of full-scale measurements of wind pressures and wind forces on roof tiles. The objective building has a rectangular plan of 5.4mx4.8m and a ridge height 6.7m and has a gable roof. The results are as follows: 1) The mean pressures on the upper surfaces of the tiles were roughly the same as those on under surfaces over most areas of the roof. 2) The mean forces on the roof tiles were very small compared with the peak forces, so that their contributions to the peak forces were small. 3) The coherencies between the fluctuating pressures on upper surfaces and those on the under surfaces of the tiles were high in the low frequency region. 4) The coherencies between the fluctuating internal pressures on the roof tiles were higher than those of the fluctuating external pressures. A time series of internal pressures and wind forces on a tile was estimated from the time series of the external pressures obtained from the measurements. The estimated time series of wind force showed good agreement with that obtained from the measurements.