TY - JOUR
T1 - Concentrically loaded slender square hollow and composite columns incorporating high strength properties
AU - Khan, M.
AU - Uy, B.
AU - Tao, Z.
AU - Mashiri, F.
PY - 2017
Y1 - 2017
N2 - This paper presents an experimental investigation of longitudinally slender box sections (HS) having compact and non-compact cross-sections as well as slender composite sections (CB) fabricated from high strength steel (HSS) and high strength concrete (HSC). Fifteen test specimens (HS) and thirty nine test specimens (CB) having width to thickness ratios (b=t) ranging from 15 to 40 and slenderness ratios ranging from 18 to 124 were tested to failure. Finite element modelling (FEM) of the test specimens (HS and CB) was verified with the experimental results for further analysis. The FEM was used to investigate the effects of residual stresses induced from lightly and heavily welded box sections on the member capacity of slender box sections. The column curves of various design specifications pertaining to slender welded box sections were reviewed by the experimental and FEM peak strengths for the purpose of selecting the most appropriate curves for non-compact box sections. Likewise, the column curves pertaining to the slender composite sections were reviewed by the experimental and FEM peak strengths for the purpose of selecting the most appropriate curves for high strength composite columns fabricated from HSS (690 MPa) and HSC (80–130 MPa).
AB - This paper presents an experimental investigation of longitudinally slender box sections (HS) having compact and non-compact cross-sections as well as slender composite sections (CB) fabricated from high strength steel (HSS) and high strength concrete (HSC). Fifteen test specimens (HS) and thirty nine test specimens (CB) having width to thickness ratios (b=t) ranging from 15 to 40 and slenderness ratios ranging from 18 to 124 were tested to failure. Finite element modelling (FEM) of the test specimens (HS and CB) was verified with the experimental results for further analysis. The FEM was used to investigate the effects of residual stresses induced from lightly and heavily welded box sections on the member capacity of slender box sections. The column curves of various design specifications pertaining to slender welded box sections were reviewed by the experimental and FEM peak strengths for the purpose of selecting the most appropriate curves for non-compact box sections. Likewise, the column curves pertaining to the slender composite sections were reviewed by the experimental and FEM peak strengths for the purpose of selecting the most appropriate curves for high strength composite columns fabricated from HSS (690 MPa) and HSC (80–130 MPa).
KW - columns
KW - high strength concrete
KW - steel, high strength
UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:38127
U2 - 10.1016/j.engstruct.2016.10.015
DO - 10.1016/j.engstruct.2016.10.015
M3 - Article
SN - 0141-0296
VL - 131
SP - 69
EP - 89
JO - Engineering Structures
JF - Engineering Structures
ER -