Fatigue Strengths of Steel Members Having Longitudinal Single-Bevel-Groove Welds

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概要

• 論文の詳細を見る

• Recently, a partial penetrated corner welding of single-bevel-grooves has come to be often adopted for joining parts of box-section truss members. It may be expected that irregularities in weld metal bottom surfaces at bevel roots and residual tensile stresses at welding portion will greatly influence fatigue strength of these members. In the present study, large-, medium-, and small-sized specimens which were cut off from the same type of welded joints were used to investigate effects of irreguralities in weld metal and residual stresses on fatigue strength. Root gaps (g) were 0, 2 and 4 mm. The main conclusions are summarized as follows : (1) Fatigue cracks of specimens almost invariably initiated from root portions of welds. (2) Fatigue strengths of specimens of g=2 were the highest and those of g=4 were the lowest although there was not much difference between g=2 and 0 mm. (3) The reduction in fatigue strength due to existence of residual stress is very substantial and the effect was recognized as being considerably greater than that of average stresses.

• 社団法人溶接学会の論文
• 1980-04-01

著者

• Tajima Jiro

  Design Division Honshu-shikoku Bridge Authority.

• MIKI Chitoshi

  Civil Engineering Dept., Faculty of Engineering, University of Tokyo.

• NISHIMURA Toshio

  Civil Engineering Dept., Faculty of Engineering, Tokyo Institute of Technology.

• OKUKAWA Atsushi

  Sakaide Construction Office, Honshu-Shikoku Bridge Authority.

• Miki Chitoshi

  Civil Engineering Dept. Faculty Of Engineering University Of Tokyo.

• Okukawa Atsushi

  Sakaide Construction Office Honshu-shikoku Bridge Authority.

• Nishimura Toshio

  Civil Engineering Dept. Faculty Of Engineering Tokyo Institute Of Technology.

関連論文

• Fatigue Strengths of Steel Members Having Longitudinal Single-Bevel-Groove Welds

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