欠陥を有する突合せ溶接継目部の塑性疲労特性と累積損傷に関する研究

概要

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In this paper the low cycle fatigue test results of butt-welded joint specimens of smoothly shaped bar type with a rectangular section and of cruciform type are reported. The main object of this test is to find the effects of the combinations (step-up and step-down type) of the overall strain amplitudes on the cyclic behavior of butt-welded joint. These combinations are decided on the basis of the numerically obtained strain response at the beam-to-column welded joints in the high-rise steel buildings subjected to the severe earthquakes. The authors also discuss the effects of the shape of the welded joints on the low cycle fatigue characteristics of the specimens. And lastly, the authors will try to estimate the cumulative damage of the defective joints with these numericlly obtained strain response and the low cycle fatigue characteristics of the joint.
一般社団法人日本建築学会の論文
1989-03-10