(22)下部構造柱の影響を考慮した屋根型単層円筒ラチスシェルの地震応答性状

概要

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According to the survey of Hyogoken Nanbu Earthquake in 1995, the damage of space structures was mostly observed near the boundaries between the roof and supporting structures. This suggested the importance of taking into account the dynamic amplitication effect due to supporting structures, which is usually ignored in the design. In the present paper, dynamic response analysis is performed to investigate the effect of supporting columns on the seismic response of a single-layer latticed cylindrical shell roof supported by a number of columns. The mass and stiffness of the supporting columns are varied parametrically over a range of realistic situation. Results are presented for free vibration characteristics, transfer functions and dynamic responses to typical earthquake records. It is shown that the effect of supporting structures can never be ignored, especially when the natural frequency of the supporting structure is close to that of the roof structure.
一般社団法人日本建築学会の論文
1999-03-10