船底縦通材と横隔壁との結合強度に関する実験について

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This paper presents the results of tests on the five large ship structure specimens which were conducted by the Harima Ship Welding Committee. The tests are made to investigate the extent of stress concentrations and areas affected by structural discontinuities so as to furnish data necessary for improving current design. For this purpose, five specimens are chosen which represent the constructions at the intersection of a bottom longitudinal and a transverse bulkhead as found in a design of 18,000 D. W. T. welded tanker.The following problems are presented by the five specimens, i. e.Effects of flanging radius of bottom longitudinal, Effects of tripping bracket on bottom longitudinal, Effects of cutout form and soft toe, Comparison between a through bracket specimen and a non through bracket specimen.The elastic and failure tests are performed by the 1,500 tons tester at room tempexature. Stress values in the region of the intersection are compared with stresses in the surrounding area bordering the intersection. Stress concentrations and energy for fracture on each specimen are also compared.It is concluded from the tests results that the elastic or plastic behaviour and ultimate strength of no. 1〜4 specimens differed little from one another, and no. 5 specimen shows its superiority as may be reasonably expected.Lastly, the data are compared with measured stress values in an actual ship while being launched, and the results of earlier American tests sponsored by the U. S. Navy (the Welding Journal, February 1951).
社団法人日本船舶海洋工学会の論文

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寺尾貞一
播磨造船所

船底縦通材と横隔壁との結合強度に関する実験について

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