FULL-SCALE EXPERIMENT RESEARCH ON K AND KK JOINTS
In order to obtain the failure modes, the stress distributions and the ultimate capacity of circular hollow sections (CHS), full-scale tests on five specimen joints were carried out, including two K joints and three KK joints. Three kinds of failure patterns of specimen joints were observed in the tests, namely weld crack failure connecting tensile brace and chord, the local buckling failure at compressive brace end adjacent to the chord and the failure combined weld crack of tensile brace with local buckling of compressive brace. The distribution and development of the equivalent stress were rather complicated and non-uniform. As the specimens used in the tests had the peculiarity of strong chord and weak brace, the failure modes of joints were different from that stipulated in the codes (GB 50017-2003 and Eurocode3), in which the chord failed due to the excess of plastic deformation. Therefore calculation for the ultimate capacity could not apply the formulas given in the codes. Good agreement had been found between the results of laboratory tests and Finite Element analyses (FEA). FEA method was an efficient method of solving ultimate capacity of such joints.
CHS joints full-scale experiment FEA code design formula
X. P. Shu Y. Yao S. N. Zhu Z. S. Yuan B. R. Lu
Steel Structural Institute of Civil Engineering College of Hunan University, Changsha, P.R.China
国际会议
Seventh International Conference on Advances in Steel Structures(第七届国际钢结构进展会议 ICSS2012)
南京
英文
558-566
2012-04-14（万方平台首次上网日期，不代表论文的发表时间）