信頼性理論に基づいたクレーン走行ばりの疲労寿命に及ぼす初期検査の影響に関する考察

概要

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The evaluation of fatigue life of crane runway girders is an important factor to be considered in it's design and regular inspection. The fatigue crack propagation life can be computed using fracture mechanics. However, an accuracy of computation is governed by the uncertainty of input parameters such as weld defect, it's size and shape. This paper showed that (1) the method to obtain an occurrence probability of fatigue failure based on reliability theory and fracture mechanics, (2) an accuracy of proposed numerical model is verified by comparing with fatigue life of existing test data and computed value, and (3) fatigue life of crane runway girders that were initially inspected and repaired increased about 1.8 times as compared with non inspected girders.
社団法人日本建築学会の論文
1999-09-30