線形破壊力学の応用による鉄骨部材の破断荷重推定方法

概要

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As a simple means to grasp the fracture strength of steel member's connections with defect, the predicting method of the strength by application of linear fracture mechanics was proposed. This paper discusses the basic theory, the conversion curve, which converts the stress calculated by linear fracture mechanics into the fracture stress by experiment, the structural stress concentration factor and an example of calculation by this method. In order to confirm the conversion curve, structural concentration factor and validity of this method, tensile test of steel plate with side notch was conducted, and prediction and test results of joint connections were compared. The conclusion of this study can be summarized as follows; 1) The conversion curve was obtained from tensile tests, and can be evaluated by fracture critical stress of notch. 2) The structural stress concentration factor can be presumed by means of FEM elastic analysis. 3) As the results of comparison between prediction and test results, the proposed method gave good prediction of the strength.
社団法人日本建築学会の論文
2004-11-30