Design of cold-formed high strength steel tubular beams

Abstract A numerical investigation on cold-formed high strength steel (HSS) tubular beams is presented in this paper. The nominal 0.2% proof stresses of the HSS sections ranged from 700 MPa to 1100 MPa. In the complementary study [1], experimental investigation on the beam specimens have been performed. In the present study, numerical modelling methodology for beams was first validated and parametric study on the cold-formed HSS tubular beams was conducted. A total of 423 numerical data was obtained to investigate the structural performance of HSS tubular beams. The experimental and numerical results were then compared with the codified design guidelines from ANSI/AISC 360-10 [2], EN 1993-1-1 [3], AS 4100 [4] and AISI S100 [5] in addition to the predictions from Direct Strength Method (DSM) for square hollow sections (SHS), rectangular hollow sections (RHS) and circular hollow sections (CHS). The codified slenderness limits for sections subjected to bending were examined. Improvements on the design guidelines are proposed in this paper.

[1]  Hui Jiao,et al.  Section slenderness limits of very high strength circular steel tubes in bending , 2004 .

[2]  D. A. Nethercot,et al.  Designer's guide to EN 1993-1-1 : Eurocode 3: Design of Steel Structures : General Rules and Rules for Buildings /L. Gardner and D. A. Nethercot , 2005 .

[3]  Kim J.R. Rasmussen,et al.  Design of Cold-Formed Stainless Steel Tubular Members. II: Beams , 1993 .

[4]  Darko Beg,et al.  Slenderness limit of Class 3 I cross-sections made of high strength steel , 1996 .

[5]  Theodore V. Galambos,et al.  The Bending Resistance of Steel Beams , 1978 .

[6]  Kyu-Hong Han,et al.  Flexural Strength and Rotation Capacity of I-Shaped Beams Fabricated from 800-MPa Steel , 2013 .

[7]  B. Neal.  Plastic Methods of Structural Analysis , 1963 .

[8]  Ben Young,et al.  Experimental and numerical investigation of cold-formed lean duplex stainless steel flexural members , 2013 .

[9]  B. Young,et al.  Design of Cold-Formed High-Strength Steel Tubular Stub Columns , 2018, Journal of Structural Engineering.

[10]  Tak-Ming Chan,et al.  Experimental investigation on stub-column behavior of cold-formed high-strength steel tubular sections , 2016 .

[11]  Richard Sause,et al.  Strength and ductility of HPS flexural members , 2002 .

[12]  Tak-Ming Chan,et al.  Bending strength of hot-rolled elliptical hollow sections , 2008 .

[13]  X. Zhao,et al.  Cross-section classification for cold-formed and built-up high strength carbon and stainless steel tubes under compression , 2015 .

[14]  Zhanjie Li,et al.  Buckling Analysis of Cold-formed Steel Members with General Boundary Conditions Using CUFSM Conventional and Constrained Finite Strip Methods , 2010 .

[15]  Richard Sause,et al.  High-strength steel: implications of material and geometric characteristics on inelastic flexural behavior , 1998 .

[16]  Barbara Rossi,et al.  Behaviour of structural stainless steel cross-sections under combined loading – Part II: Numerical modelling and design approach , 2015 .

[17]  Ben Young,et al.  Aluminum alloy tubular columns-Part I: Finite element modeling and test verification , 2006 .

[18]  Ben Young,et al.  Experimental investigation of cold-formed high strength steel tubular beams , 2016 .

[19]  Ben Young,et al.  Material properties of cold-formed lean duplex stainless steel sections , 2012 .

[20]  Leroy Gardner,et al.  Flexural behaviour of hot-finished high strength steel square and rectangular hollow sections , 2016 .

[21]  David A. Nethercot,et al.  Numerical Modeling of Stainless Steel Structural Components—A Consistent Approach , 2004 .

[22]  Theodore V. Galambos,et al.  Deformation and energy absorption capacity of steel structures in the inelastic range , 1968 .

[23]  Ben Young,et al.  Material properties and residual stresses of cold-formed high strength steel hollow sections , 2015 .