Experimental Investigation and Finite Element Analysis on Concrete-Filled Steel Tubular Gusset Plate Connections

Abstract:

The use of concrete-filled steel tubes in different areas of construction is becoming an attractive solution because of its remarkable performance. It provides not only an increase in the load carrying capacity but also good seismic behaviour. It is often adopted as compression member especially for structure under large axial pressure. Concrete-filled steel tubular composite truss can be used as main load-bearing structure of long-span and mega structure. But the composite trusses were connected by mutually intersecting joints which the welding construction process is complicated and the quality is unstable. Therefore, gusset plate joints are more suitable. So experimental study and finite element analysis are carried out in 12 specimens. Test results indicate that bearing capacity of hollow circular steel tube joints filled with concrete is provided obviously, and local buckling performance of steel tube under gusset plate is also improved. In order to study the mechanical performance and interaction of steel tube and core concrete, the ANSYS program is adopted in finite element analysis. And the analysis results is agreed well with the test. Regression analysis is carried out at the same time, thus simplified calculated formula of this type joints is concluded which can give reference for the designers.

• Periodical: Advanced Materials Research (Volume 721)
• Pages: 701-705
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.721.701
• Online since: July 2013
• Authors: Wen Feng Duan, Chang Liu, Bao Zhu Cao
• Keywords: Concrete-Filled Steel Tube (CFST), Finite Element Analysis (FEA), Gusset Plate Joint, Local Buckling Performance, Regression Analysis

References

[1] Zhong Shantong, Concrete filled steel tubular structures, Harbin: Heilongjiang science and Technology Press, 1994.

[2] People's Republic of China National Standard: Code for design of steel structures (GB500172003). China Planning Press, 2003.

[3] S.S. Walbridge, G.Y. Grondin and J.J.R. Cheng, An analysis of the cycle behaviour of steel gusset plate connections,J. J.Construct. Steel Res. 46(1998),449-450.

DOI: 10.1016/s0143-974x(98)80079-5

[4] St.Blümel, M.Fontana, Load-bearing and deformation behaviour of truss joints using thin-walled pentagon cross-sections,J. Thin-Walled structures. 42(2004)295-307.

DOI: 10.1016/s0263-8231(03)00061-2