Analysis and Design Method on Local Buckling Behavior of 960 MPa High Strength Steel Columns under Axial Compression
Abstract
In order to examine the local buckling behavior of 960 MPa (yield strength standard) high strength steel (HSS) columns under axial compression, finite element models were developed by using the finite element (FE) software, ANSYS. Local buckling of four welded box section and four welded I-section columns under axial compression considering the initial geometric imperfections and welding-induced residual stresses was investigated. The FE model was then verified by comparing the ultimate bearing capacity and bearing capacity governed by local buckling of the existing test results. Using the validated FE modeling approach, parametric analyses were conducted on the local buckling behavior of 960 MPa HSS box section and I-section columns under axial compression. Moreover, the FE analysis results and the existing test results summarized in this paper were compared with the design curves in Chinese, American and European codes. It is found that the FE model established in this paper can accurately simulate the local buckling behavior of 960 MPa HSS columns under axial compression. The initial geometric imperfection and the residual stress have little influence on the ultimate stress of 960 MPa HSS columns, but exhibit a great influence on the local buckling stress. Compared with the design methods in the Chinese, American and European codes, the new design formulae proposed in this paper were recommended for the design of the local buckling stress and post-buckling ultimate stress of 960 MPa HSS columns under axial compression.
Keywords: high strength steel, axial compression, local buckling, finite element method, design
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SHI Gang, WANG Yuanqing. SHI Yongjiu. Behavior of high strength steel columns under axial compression [J]. Journal of Building Structures, 2009, 30(2); 92 - 97. (In Chinese)
SHI (iang. HU Fangxin. SHI Yongjiu. Recent research advances of high strength steel structures and codification of design specification in China [J]. International Journal of Steel Structures, 2014, 14(4); 873-887.
SHI Gang, LIN Cuocuo, ZHOU Wenjing, et al. Experimental study on local buckling of 960 MPa high strength steel columns under axial compression [J]. Journal of Building Structures, 2014, 35(1); 126 -135. (In Chinese)
TILLMAN S C, WILLIAMS A F. Buckling under compression of simple and multicell plate columns [J], Thin-Walled Structures, 1989, 8(2): 147-161.
SHI (iang, XU Kelong, LIN Cuocuo. Finite element analysis and design method study on the local buckling of 460MPa high strength steel 1section columns under axial compression[ J]. Industrial Construction, 2016,46(7) :22 - 31. (In Chinese)
HI Gang, SHI Yongjiu. Experimental study on residual stress in 960MPa high strength steel welded box sections and unified model J . China Civil Engineering Journal. 2013.46(11); 63 - 69. (In Chinese)
BAN Huiyong. SHI Gang, SHI Yongjiu. Experimental and unified model investigations on residual stress within high strength steel welded Isections [J]. Engineering Mechanics, 2014.31(8): 83 - 91. (In C hinese)
SHI Diang. LIN Cuocuo. ZHOU Wenjing, etal. Finite element a-nalysis and design method study on the local buckling of 460MPa HSS box section axial compressed columns [J]. Engineering Mechanics, 2014. 31(5); 128-136. (In Chinese)
GB 50205-2001 Code for acceptance of construction quality of steel structures [S]. Beijing: China Planning Press. 2001: .30 - 31. (In C hinese)
LIN Cuocuo. i-ocal buckling and design method of high strength steel welded-sect ion members under axial compression _D_. Beijing: Tsinghua University. 2012: 60 - 79. (In Chinese)
GB 50017-2003 Code for design of steel structures [S]. Beijing: China Planning Press. 2003. (In Chinese)
AISC 360-10 Specification for Structural Steel Buildings [S]. Chicago; American Institute of Steel Construction. 2010.
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