Steel and Composite Structures

  • 제2권6호
  • /
  • Pages.475-488
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  • 2002
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Stop-hole conditions to prevent re-initiation of fatigue cracks

  • 투고 : 2001.09.11
  • 심사 : 2002.11.18
  • 발행 : 2002.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

In steel bridges fatigue cracks are sometimes repaired by placing drilled holes at the crack tips. From the meaning that the drilled holes stop the propagation of cracks, they are called stop-holes. Since stop-holes are regarded as an emergency measure to delay crack propagation, usually some substantial repair follows. However, if the stress at the stop-holes is below their fatigue limit, fatigue cracks would not be expected to occur. The purpose of this study is to present the conditions under which stop-holes prevent the reinitiation of fatigue cracks. The fatigue limit of stop-holes and the equations necessary to estimate the maximum stress on the circumference of the stop-holes are provided.

키워드

참고문헌

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  12. Okura, I. and Ishikawa, T. (1999), "Conditions to keep drilled holes from fatigue cracking", JSSC, Japan, J. Constructional Steel, 7, 181-188. (in Japanese)
  13. Okura, I., Shiozaki, T. and Nakanishi, Y. (1996), "Fatigue strength of drilled holes under membrane and platebending stresses", JSCE, Japan, Structural Eng./Earthquake Eng., 537/I-35, 327-338. (in Japanese)
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피인용 문헌

  1. Reduction of Stress Concentration at Stop-Hole by Bolting a Crack vol.20, pp.6, 2002, https://doi.org/10.1007/s13296-020-00434-1