円筒形屋根を支える円弧アーチに作用する変動風圧によって生じる応力の特徴

概要

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The present paper is a continuation of reporting on research on the wind resistant performance of circular arches that support a barrel roof. The paper discusses not only the characteristics of stress caused by wind pressure in statically determinate arches with differing rise ratios and span ratios, but also the validity of the equivalent static evaluation of wind loads on such arches. The discussion intends to demonstrate the following. (1) A statically determinate arch with a low rise arch has greater maximum bending moment and maximum shearing force, but smaller maximum axial force, than a two-hinged arch. (2) The maximum axial force of a statically determinate arch is consistently greater as rise ratio is greater. Maximum bending moment and maximum shearing force change little relative to change in rise ratio. (3) In a statically determinate arch in the center of a roof, wind blowing along the arch span generates maximum and average stress distributions of similar form. (4) It is possible to perform an equivalent static evaluation of the maximum stress generated in a statically determinate arch in the center of a roof by using average stress and the gust influence factor on stress.
社団法人日本建築学会の論文
1998-10-30