Techno Press
Techno Press

Steel and Composite Structures   Volume 19, Number 3, September 2015, pages 547-567
DOI: http://dx.doi.org/10.12989/scs.2015.19.3.547
 
Seismic behavior of rebar-penetrated joint between GCFST column and RGC beam
Guochang Li, Chen Fang, Yuwei An and Xing Zhao

 
Abstract     [Full Text]
    The paper makes the experimental and finite-element-analysis investigation on the seismic behavior of the rebar-penetrated joint between gangue concrete filled steel tubular column and reinforced gangue concrete beam under low cyclic reversed loading. Two specimens are designed and conducted for the experiment to study the seismic behavior of the rebar-penetrated joint under cyclic loading. Then, finite element analysis models of the rebar-penetrated joint are developed using ABAQUS 6.10 to serve as the complement of the experiment and further analyze the seismic behavior of the rebar-penetrated joint. Finite element analysis models are also verified by the experimental results. Finally, the hysteretic performance, the bearing capacity, the strength degradation, the rigidity degradation, the ductility and the energy dissipation of the rebar-penetrated joint are evaluated in detail to investigate the seismic behavior of the rebar-penetrated joint through experimental results and finite element analysis results. The research demonstrates that the rebar-penetrated joint between gangue concrete filled steel tubular column and reinforced gangue concrete beam, with full and spindle-shaped load-displacement hysteretic curves, shows generally the high ductility and the outstanding energy-dissipation capacity. As a result, the rebar-penetrated joint exhibits the excellent seismic performance and meets the earthquake-resistant requirements of the codes in China. The research provides some references and suggestions for the application of the rebar-penetrated joint in the projects.
 
Key Words
    gangue concrete filled steel tube; joint; reinforced gangue concrete beam; seismic behavior; energy dissipation; ductility
 
Address
(1) Guochang Li, Yuwei An, Xing Zhao:
School of Civil Engineering, Shenyang Jianzhu University, 9 Hunnan East Road, Shenyang, Liaoning 110168, P.R. China;
(2) Chen Fang:
Department of Civil Engineering, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA.
 

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