第17回
動的荷重を受ける配管の塑性崩壊に関する基礎的研究
著者:
長谷川 翔,笹木 龍之介,一宮 正和,笠原 直人,(東京大)
発刊日:
公開日:
キーワードタグ:
According to experimental observations, as the failure modes of piping in nuclear power plants caused by large seismic motion, ratchet collapse was observed. Ratchet collapse is the collapse which is followed by ratchet deformation. However, the mechanism of ratchet collapse under the large seismic load is not so clear. In order to clarify ratchet collapse, it is important to examine ratchet deformation and collapse at first. Ratchet deformation occurrence condition and mechanism have already been clear. In...
英字タイトル:
Fundamental study on collapse of piping under dynamic load
第16回
振動荷重を受ける梁の進行性変形発生条件に関する研究
著者:
笹木 龍之介,一宮 正和,呂 金其,笠原 直人,(東京大)
発刊日:
公開日:
キーワードタグ:
According to experimental observations, the failure modes of piping in nuclear power plants caused by large seismic motion are fatigue or ratchet deformation. However, the mechanism of ratchet deformation under the large seismic load is not so clear. In this study, authors conducted experiments and analysis of beams which simulates piping due to cyclic sinusoidal or more complicated waves (composite sinusoidal wave). As the results, authors confirmed that ratchet deformation occurrence conditions are strong...
英字タイトル:
Study on ratchet deformation occurrence conditions of beams due to vibration load