A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experiments on hybrid tubular K-joints with circular braces and square chord in stainless steel
Highlights Tests were conducted on hybrid tubular K-joints with circular braces and square chord in stainless steel. Load-carrying capacities of overlapped hybrid tubular K-joints are much larger than those of gapped hybrid tubular K-joints. Load-carrying capacities increased with the increase of the β, but increased with the decrease of the e. CIDECT is unconservative, while EC3, AS/NZS and Chinese Code are very conservative for overlapped hybrid K-joints. CIDECT and EC3 are conservative, Chinese Code is unconservative, and AS/NZS is appropriate for gapped hybrid K-joints.
Abstract An experimental investigation was conducted in this study on hybrid tubular K-joints with circular braces and square chord in stainless steel. A total of 14 hybrid tubular K-joints including 7 overlapped and 7 gapped K-joints were tested. All specimens were made of AISI 304 austeniticstainlesssteel. The failure modes, load-carrying capacities, and testing curves of axial load versus vertical displacement/chord deformation of all specimens were obtained. The influences of important geometric variations including brace diameter/chord width ratio (β), eccentricity (e), overlap ratio (Ov) of overlapped tubular K-joints and gap distance (g) of gapped tubular K-joints were analyzed. It is shown that the load-carrying capacities of overlapped hybrid tubular K-joints are much greater than those of gapped hybrid tubular K-joints. It is also discovered that the load-carrying capacities increased with the increment of the β value, and increased with the decrement of the e value. Furthermore, the load-carrying capacities of overlapped hybrid tubular K-joints increased with the increment of the Ov value; however, the influence of the g value on the load-carrying capacities of gapped hybrid tubular K-joints is insignificant. It is demonstrated that the design formulae provided by CIDECT are generally unconservative; whereas the design formulae provided by EC3, AS/NZS and Chinese Code are all quite conservative for overlapped hybrid tubular K-joints. In addition, the design formulae provided by CIDECT and EC3 are generally conservative; however, the design formulae provided by Chinese Code are generally unconservative; and the design formulae provided by AS/NZS are generally appropriate for gapped hybrid tubular K-joints.
Experiments on hybrid tubular K-joints with circular braces and square chord in stainless steel
Highlights Tests were conducted on hybrid tubular K-joints with circular braces and square chord in stainless steel. Load-carrying capacities of overlapped hybrid tubular K-joints are much larger than those of gapped hybrid tubular K-joints. Load-carrying capacities increased with the increase of the β, but increased with the decrease of the e. CIDECT is unconservative, while EC3, AS/NZS and Chinese Code are very conservative for overlapped hybrid K-joints. CIDECT and EC3 are conservative, Chinese Code is unconservative, and AS/NZS is appropriate for gapped hybrid K-joints.
Abstract An experimental investigation was conducted in this study on hybrid tubular K-joints with circular braces and square chord in stainless steel. A total of 14 hybrid tubular K-joints including 7 overlapped and 7 gapped K-joints were tested. All specimens were made of AISI 304 austeniticstainlesssteel. The failure modes, load-carrying capacities, and testing curves of axial load versus vertical displacement/chord deformation of all specimens were obtained. The influences of important geometric variations including brace diameter/chord width ratio (β), eccentricity (e), overlap ratio (Ov) of overlapped tubular K-joints and gap distance (g) of gapped tubular K-joints were analyzed. It is shown that the load-carrying capacities of overlapped hybrid tubular K-joints are much greater than those of gapped hybrid tubular K-joints. It is also discovered that the load-carrying capacities increased with the increment of the β value, and increased with the decrement of the e value. Furthermore, the load-carrying capacities of overlapped hybrid tubular K-joints increased with the increment of the Ov value; however, the influence of the g value on the load-carrying capacities of gapped hybrid tubular K-joints is insignificant. It is demonstrated that the design formulae provided by CIDECT are generally unconservative; whereas the design formulae provided by EC3, AS/NZS and Chinese Code are all quite conservative for overlapped hybrid tubular K-joints. In addition, the design formulae provided by CIDECT and EC3 are generally conservative; however, the design formulae provided by Chinese Code are generally unconservative; and the design formulae provided by AS/NZS are generally appropriate for gapped hybrid tubular K-joints.
Experiments on hybrid tubular K-joints with circular braces and square chord in stainless steel
Feng, Ran (author) / Lin, Junwu (author) / Mou, Xinling (author)
Engineering Structures ; 190 ; 52-65
2019-04-01
14 pages
Article (Journal)
Electronic Resource
English