Ultimate Strength of branch-rotated T-joints in Cold-formed Square Hollow Sections-Chord web failure mode-

지관이 회전된 냉간성형 각형강관 T형 접합부의 최대내력(II)-주관 웨브 파괴모드-

  • Received : 2002.08.21
  • Published : 2003.02.27

Abstract

This paper described the ultimate strength and deformation limit of new uniplanar T-joints in cold-formed square hollow sections. The new T-joint had the configuration that only a branch member was oriented at 45 degrees to a chord member in the plane of the truss. This study focused on the branch-rotated T-joints governed by chord web failure. Based on the test results of the T-joint in cold-formed square hollow sections, the deformation lirnit was found to be 3%B for $16.7{\leq}2(B/T){\leq}33.3$ and $0.63{\leq}(b_1/B)=0.7$. Existing strength formulas for traditional T-joint were investigated, and the new strength formula for the branch-rotated T-joint was proposed. This proposed formula was based on column buckling theory considering the rounded corners of cold-formed square hollow sections. Finally, the optimization condition of yield stress and $2{\gamma}$ was recommended to select the optimized chord section.

References

  1. International Symposium on Tubular Structures An experimental study on joints of a new truss system using rectacgular hoolow sections One T.;Iwata, M.;Ishida K.
  2. 한국강구조학회논문집 무보강 모살용접 각형강관 T형 접합부의 거동에 관한 실험적 연구(Ⅱ) 문태섭;배규웅
  3. CIDECT Monograph No. 6 The strength and behavior of statically loaded welded connections in structural hollow sections CIDECT
  4. J Construct Steel Res v.57 The influence of member orientation of the resistance of cross joints in square RHS construction Owen, JS.;Davies, G.;Kelly, RB.
  5. Tubular Structure v.Ⅵ Deformation limit for the ultimate strength of hollow section joints Lu, L.H.;de Winkel, G.D.;Yu, Y.;Wardenier, J.
  6. 한국강구조학회논문집 냉간성형 각형강관 모살용접 T형 접합부의 최대내력(Ⅱ)-주관 웨브 파괴모드 배규웅;박금성;강창훈;문태섭
  7. Theory of Elastic Stability Timoshenko, S.P.;Gere, J.M.
  8. 한국강구조학회논문집 냉간성형 각형강관 모살용접 T형 접합부의 최대내력(Ⅰ)-주관 플랜지 파괴모드 배규웅;박금성;강창훈;문태섭
  9. IIW Doc. V-701-89(2nd edition) Design recommendation for hollow section joints-predominantly statically loaded International Institute of Welding (IIW)
  10. 한국강구조학회논문집 무보강 모살용접 각형강관 T형 접합부의 거동에 관한 실험적 연구(Ⅰ) 문태섭;배규웅
  11. 한국강구조학회 지관이 회전된 냉간성형 각형강관 T형 접합부의 최대내력(Ⅰ)-주관 플랜지 파괴모드 배규웅;박금성;강창훈;문태섭
  12. Design guide for rectangular hollow section (RHS) joints under predominantly static loading Packer, J.A.;Wardenier, J.;Kurobane, Y.;Dutta, D.