An Experimental Study of the Fatigue Specimen for the Typical Structural Details of the Steel Bridge

강교량의 표준적 구조상세에 대한 실험적 연구

  • 정영화 (강원대학교 토목공학과) ;
  • 조재병 (경기대학교 건설공학부) ;
  • 배두병 (국민대학교 토목환경공학부) ;
  • 정경섭 (충북대학교 구조시스템공학과) ;
  • 우상익 (한국원자력연구소 하나로운영팀)
  • Received : 1999.10.13
  • Published : 2000.10.27

Abstract

This paper presents the results of the experimental and analytical investigation for the fatigue strength of welded details frequently used in steel bridges, especially for the details with relatively lower fatigue strength. The welded details included four kinds of welded details corresponding to the categories C, D, E and E' which represent the flange attachment details, web attachment details, transverse stiffeners and cover-plate details. Tensile fatigue tests were performed. The test results were compared with other available test results and the fatigue criteria of AASHTO, JSSC and Eurocode specifications. Generally, our test results were well agreed with other test results and satisfied with above-mentioned fatigue design provisions. However, it was found that transversely loaded weld-details showed lower fatigue strength than longitudinally loaded weld-details in transverse stiffener detail, and the test results of those details were not satisfied with AASHTO fatigue provisions. Examining the effect of length of gusset plate attachment details, welded details with longer attachment showed relatively lower fatigue strength, especially for the out-of-plane gusset plate details. It is recommended to perform additional fatigue tests with various loading and detail parameters and to establish the more detailed fatigue categories such as Eurocode or JSSC

Acknowledgement

Grant : 강교량 구조상세의 피로실험

Supported by : 포항산업과학연구원

References

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