Journal of Korean Society of Steel Construction (한국강구조학회 논문집)

Korean Society of Steel Construction (한국강구조학회)
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The Development of the Direct Strength Method for Welded Steel Members

용접형강의 직접강도법 개발에 관한 연구 고찰

  • 류승완 (영남대학교, 건설시스템공학과) ;
  • 박성웅 (영남대학교, 건설시스템공학과) ;
  • 권영봉 (영남대학교, 건설시스템공학과)
  • Received : 2014.10.14
  • Accepted : 2015.02.05
  • Published : 2015.04.27
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Abstract

The direct strength method (DSM) has been adopted by the NAS (2004) and AS/NZS 4600 (2005) for the design of cold-formed steel members. The method can be successfully applied to the design of welded steel members. This paper reviews the development of the DSM for welded steel structural members. The design strength formulae for welded section columns and beams for the DSM are based on the test results performed on welded H-section, C-section, circular and rectangular hollow section columns, plate girders and stiffened plates. The comparison between the design strength of welded sections predicted by the DSM and that estimated by existing specifications is also provided. The comparison verifies that the DSM can properly predict the compressive, flexural and shear strength of welded section columns and beams with the interaction between local and overall buckling.

직접강도법은 NAS(2004)와 AS/NZS 4600(2005)에 의해서 냉간성형강재의 설계에 처음 채택되었다. 이 설계법은 용접형강 부재에도 효과적으로 적용이 가능하다고 판단된다. 본 논문에서는 최근 수행된 용접형강 부재의 직접강도법 개발에 대해서 살펴보고자 한다. 용접형강 압축 및 휨부재의 설계강도식은 H, C, RHS, CHS 형강, 플레이트거더 및 보강판 단면의 실험 결과에 근거하여 개발 되었다. 직접강도법과 현행 설계기준에 의해 예측된 강도의 비교 결과를 통하여 직접강도법을 적용하여 좌굴혼합이 발생하는 용접형강 기둥 및 보 부재의 압축, 휨 및 전단강도를 합리적으로 산정할 수 있는 것을 입증하였다.

Keywords

References

  1. 이강민, 이명재, 오영석, 김테수, 김도환(2013) 중심압축력을 받는 건축구조용 고성능(HSA800) 용접H형 단주의 국부좌굴거동, 한국강구조학회논문집, 한국강구조학회, 제25권, 제5호, pp.289-297. Lee, K.M., Lee, M.J., Oh, Y.S., Kim, T.S., and Kim, D.H. (2013) Local Buckling Behavior of Stub H-shaped Columns Fabricated with HSA800 High Performance Steels Under Concentric Axial Loading, Journal of Korean Society of Steel Construction, KSSC, Vol.25, No.5, pp.289-297.
  2. 유정한, 김주우, 양재근, 강주원, 이동우(2013) 국부좌굴을 고려한 건축구조용 고성능강 (HSA800) 조립각형강관압축재의 적용성 평가, 한국강구조학회논문집, 한국강구조하기회, 제25권, 제3호, pp.223-231. Yoo, J.H., Kim, J.W., Yang, J.G., Kang, J.W., Lee, D.W. (2013) Evaluation on Applicability of Built-up Square Tubular Compression Members Fabticated with HSA800 High Performance Steel Considering Local Buckling, Journal of Korean Society of Steel Construction, KSSC, Vol.25, No.3, pp.223-231.
  3. 김정훈, 김경력, 이정환, 김경식, 강영종(2014) 고성능강재(HSB800)를 적용한 플레이트거더의휨강도에 대한 플랜지 국부좌굴, 한국강구조학회논문집, 한국강구조학회, 제26권 제2호, pp.91-103. Kim, J.H., Kim, K.Y., Lee, J.H., Kim, K.S., and Kang, Y.J. (2014) Flange Local Buckling for Flexural Strength of Plate Girders with High Performance Steel (HSB800), Journal of Korean Society of Steel Construction, KSSC, Vol.26, No.2, pp.91-103.
  4. 권영봉, 김낙구(2007) 혼합좌굴이 발생하는 압축부재의 강도에 관한 연구, 대한토목학회논문집, 대한토목학회, 제27권, A4, pp.569-578. Kwon, Y.B. and Kim, N.G. (2007) A Study on the Strengths of Compression Members Undergoing Buckling Interaction, Journal of the Korean Society of Civil Engineers, KSCE , Vol.27, A4, pp.569-578.
  5. 류승완, 권영봉(2014) 직접강도법에 의한 플레이트거더 웨브의 극한전단강도 평가, 한국강구조학회 학술발표대회, 한국강구조학회. Ryu, S.W. and Kwon, Y.B. (2014) Prediction of the Ultimate Shear Strength of Plate Girders by the Direct Strength Method, Proceedings of 2014 Korean Society of Steel Construction Conference, KSSC.
  6. 강구조설계기준-하중저항계수설계(2009) 국토교통부. Streel Structures Design Specifications, Ministry of Land (2009) Infrastructure and Transport.
  7. European Committee for Standardisation (ECS) Eurocode 3 (2006) Design of Steel Structures, Part 1-5: Plated structural elements, Brussels, Belgium.
  8. American Iron and Steel Institute (AISI) (2012) North American Specifications for the Design of Cold-Formed Steel Structural Members, Washington DC, USA.
  9. American Institute of Steel Construction (AISC) (2010) Design Specification for Steel Structural Buildings, Chicago, Il, USA.
  10. Lau, S.C.W. and Hancock, G.J. (1990) Inelastic Buckling of Channel Columns in the Distortional Mode, Thin- Walled Structures, Vol.10, No.2, pp.59-84. https://doi.org/10.1016/0263-8231(90)90005-J
  11. Kwon, Y.B. and Hancock, G.J. (1992) Strength Design Curves for Thin-Walled Sections Undergoing Local and Distortional Buckling, J. of SE, ASCE, Vol.118, No.7, pp. 1786-1803.
  12. Hancock, G.J., Kwon, Y.B., and Bernard, E.S. (1994) Strength Design Curves for Thin-Walled Sections Undergoing Distortional Buckling, Journal of Constructional Steel Research, Vol.31, pp.169-186. https://doi.org/10.1016/0143-974X(94)90009-4
  13. Schafer, B.W. and Pekoz, T. (1998) Direct Strength Prediction of Cold-Formed Steel Members using Numerical Elastic Buckling Solutions, Thin-Walled Structures, Research and Development, Eds. Shanmugan N. E., Liew J.Y.R. and Thevendran V., Elsevier, pp.137-144.
  14. American Iron and Steel Institute (2004) Supplement 2004 to the North American Specifications for the Design of Cold-Formed Steel Structural Members, Washington DC, USA.
  15. Standard Australia (2005), Cold-Formed Steel Structures AS/NZS 4600, Sydney, NSW, Australia.
  16. Kwon, Y.B., Kim, N.G., and Hancock, G.J. (2007) Compression Tests of Welded Section Columns Undergoing Buckling Interaction, Journal of Constructional Steel Research, Vol.63, pp.1590-1602. https://doi.org/10.1016/j.jcsr.2007.01.011
  17. Davids, A.J. and Hancock, G.J. (1986) Compression Tests of Long Welded I-Section Columns, J. Struct. Eng., ASCE, Vol.112, No.10, pp.2281-2297. https://doi.org/10.1061/(ASCE)0733-9445(1986)112:10(2281)
  18. Rasmussen, K.J.R. and Hancock, G.J. (1989) Compression Tests of Welded Channel Section Columns, J. Struct. Eng., ASCE, Vol.115, No.4, pp.789-808. https://doi.org/10.1061/(ASCE)0733-9445(1989)115:4(789)
  19. Usami, T. and Fukumoto, Y. (1982) Local and Overall Buckling of Welded Box Columns, J Struct Eng, ASCE, Vol.108, ST3, pp.525-542.
  20. Usami, T. and Fukumoto, Y. (1984) Welded Box Column Members, J Struct Eng, ASCE, Vol.110, No.10, pp. 2457-2470. https://doi.org/10.1061/(ASCE)0733-9445(1984)110:10(2457)
  21. Degee, H., Detzl, A., and Kuhlmann, U. (2008) Interaction of Global and Local Buckling in Welded RHS Compression Members, Journal of Constructional Steel Research, Vol.64, pp.755-765. https://doi.org/10.1016/j.jcsr.2008.01.032
  22. Kwon, Y.B. and Seo, E.G. (2013) Prediction of the Compressive Strength of Welded RHS Columns Undergoing Buckling Interaction, Thin-Walled Structures, Vol.68, pp. 141-155. https://doi.org/10.1016/j.tws.2013.03.009
  23. Kwon, Y.B., Gang, D.W., and Seo, S.J. (2011) Prediction of the Ultimate Strengths of Concrete-Filled Tubular Section Columns, Thin-Walled Structures, Vol.49, pp.85-93. https://doi.org/10.1016/j.tws.2010.08.009
  24. Kwon, Y.B. and Park, H.S. (2011) Compression Tests of Longitudinally Stiffened Plates Undergoing Distortional Buckling, Journal of Constructional Steel Research, Vol. 67, pp.1212-1224. https://doi.org/10.1016/j.jcsr.2011.02.015
  25. Choi, B.H., Hwang, M.H., Yoon, T.Y., and Yoo, C.H. (2009) Experimental Study of Inelastic Buckling Strength and Stiffness Requirements for Longitudinally Stiffened Panels, Engineering Structures, Vol.31, pp.1141-1153. https://doi.org/10.1016/j.engstruct.2009.01.010
  26. Ghavami, K. and Khedmati, M.R. (2008) Numerical and Experimental Investigations on the Compression Behavior of Stiffened Plates, Journal of Constructional Steel Research, Vol.82, pp.1087-1100.
  27. Kwon, Y.B. and Jung, I.K. (2014) Resistance of Rectangular Concrete-Filled Tubular (CFT) Sections to the Axial Load and Combined Axial Compression and Bending, Thin-Walled Structures, Vol.79, pp.178-186. https://doi.org/10.1016/j.tws.2014.02.019
  28. European Committee for Standardisation (2004) Eurocode 4: Design of Composite Steel and Concrete Structures, Part 1.1: General Rules and Rules for Buildings, Brussels, Belgium.
  29. Kwon, Y.B. and Seo, G.H. (2012) The Bending Moment Capacity of Flexural Members with Interaction of Local Buckling and Lateral-Torsional Buckling, Thin-Walled Structures, Vol.54, pp.126-139. https://doi.org/10.1016/j.tws.2012.02.005
  30. Kuhlmann, U. (1989) Definition of Flange Slenderness Limits on the Basis of Rotation Capacity Values, Journal of Constructional Steel Research, Vol.14, pp.21-40. https://doi.org/10.1016/0143-974X(89)90068-0
  31. Basler, K. (1961) Strength of Plate Girders in Shear, J. Struct. Div., ASCE, Vol.87, No.7, pp.151-181.
  32. Lee, S.C. and Yoo, C.H. (1999) Experimental Study on Ultimate Shear Strength of Web Panels, J. Struct. Eng., ASCE, Vol.125, No.8, pp.337-845.
  33. Lee, S.C., Yoo, C.H., and Yoon, D.Y. (2003) New Design Rule for Intermediate Transverse Stiffeners Attached on Web Panels, J. Struct. Eng., ASCE, Vol.129, No.12, pp.1607-1614. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:12(1607)
  34. Shanmugam, N.E. and Baskar, K. (2003) Steel-Concrete Composite Plate Girders Subjected to Shear Loading, J. Struct. Eng., ASCE, Vol.129, No.9, pp.1230-1242. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:9(1230)
  35. Ravindra, M.K. and Galambos, T.V. (1978) Load and Resistance Factor Design for Steel, J. Struct. Eng., ASCE, ST9, pp.1337-1353.