Cyclic behavior of stiffened joints between concrete-filled steel tubular column and steel beam with narrow outer diaphragm and partial joint penetration welds

Abstract

This paper presented an investigation on a stiffened joint in practical engineering which was between concrete-filled steel tubular column and steel beam with narrow outer diaphragm and partial joint penetration welds. Through the low-frequency cyclic loading test, the cyclic behavior and failure mode of the specimen were investigated. The results of the test indicated the failure mode and bearing capacity of the specimen which were influenced by the axial compression ratio of the concrete-filled tubular column. On the contrary, the inner diaphragm and inner stiffeners had limited impacts on the hysteretic behavior of the joint. There was no hysteresis damage fracture on the narrow outer diaphragm connected to the concrete-filled steel tubular column with partial joint penetration welds. Due to the excellent ductility and energy dissipating capacity, the proposed joint could be applied to the seismic design of high-rise buildings in highly intensive seismic region, but axial compression ratio should be controlled to avoid unfavorable failure modes.

Keywords

narrow outer diaphragm / concrete-filled tubular column / joint / inner and outer stiffening / cyclic behavior

References

[1] Choi S M, Shin I B, Eom C H, Kim D K, Kim D J. Elasto一Plastic behavior of the beam to concrete filled circular steel column connections with external stiffener rings. In: Building for The 21st Century. Australia: Griffith University Gold Coast Campus, 1995

[2] Shim J S, Han D J, Kim K S. An experimental study on the structural behaviors of H-shaped steel beam-to-concrete filled steel square tubular column connections. In: Building for The 21st Century. Australia: Griffith University Gold Coast Campus, 1995

[3] Fujimoto T, Inai E, Kai M, Mori K, Mori O. Behavior of beam-to-column connection of CFT column system In the 12th WCEE 2000: the 12th World Conference on Earthquake Engineering. New Zealand: New Zealand National Society for Earthquake Engineering, 2000

[4] Li X, Xiao Y, Wu Y T. Seismic behavior of exterior connections with steel beams bolted to CFT columns. Journal of Constructional Steel Research, 2009, (65): 1438–1446

[5] Shin K J, Kim Y J, Oh Y S. Seismic behaviour of composite concrete-filled tube column-to-beam moment connections. Journal of Constructional Steel Research, 2008, (64): 118–127

[6] Cheng-Yu L, Liang-Li X, Lie L. Design Formula Indicated for Connection with Exterior Diaphragms to Concrete Steel Tubular Based Yield-line Method. Steel structure, 2010, 363–368

[7] AIJ. AIJ standard for structural calculation of steel reinforced concrete structures. Architectural Institute of Japan, 2001

[8] ANSI/AISC 341-10. Seismic Provisions for Structural Steel Buildings

[9] Qin G. Research on Behavior and Design of Steel Beam to CFST Column Joints with External Stiffening Ring. Lanzhou: Lanzhou University of Technology, 2009

[10] Wen Y, Zeng Q Y. A novel approach to elasto-plastic finite element analysis of beam structures using the concept of incremental secant stiffness. Finite Elements in Analysis and Design, 2010, 46(11): 982–991

[11] Ichinohe Y, Matsutani T, Nakajima M. Elasto-plastic behavior of concrete filled steel circular columns. In: Proceedings of the Third International Conference on Steel-Concrete Composite Structures: Special Volume. Japan: Association for International Cooperation and Research in Steel-Concrete Composite Structures, 1991

[12] Tang K K, Li Z X, He D D, Zhang Z H. Evolution of plastic damage in welded joint of steel truss with pre-existing defects. Theoretical and Applied Fracture Mechanics, 2010, 54(2): 177–181

Acknowledgements

Financial support for this study was provided by the National Natural Science Foundation of China (NSFC) with Grant No. 51378380 and Shuguang Program through Grant No. 15SG19. The support from the China Construction Eighth Engineering Division Corp is also gratefully acknowledged.

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2016 Higher Education Press and Springer-Verlag Berlin Heidelberg