Advanced Steel Construction

Vol. 11, No. 1, pp. 54-72 (2015)


CYCLIC BEHAVIOR OF REBAR-PENETRATED CONNECTION BETWEEN GANGUE CONCRETE FILLED STEEL TUBULAR COLUMN AND REINFORCED GANGUE CONCRETE BEAM

 

Guochang Li1, Chen Fang2,*, Xing Zhao1, Yuwei An1 and Yu Liu1

1 School of civil engineering, Shenyang Jianzhu University, Shenyang, 110168, China

2 Department of Civil Engineering, University of Texas at El Paso, El Paso, TX 79968, USA

*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

 

Received: 31 July 2013; Revised: 22 April 2014; Accepted: 23 October 2014

DOI:10.18057/IJASC.2015.11.1.4

 

                                               

ABSTRACT:

Gangue concrete filled steel tube is a new composite system which has advantages of remarkable earthquake-resistant property and economical efficiency. However, few researches have been done with respect to the behavior of the composite system. Therefore, based on proper material constitutive models and reasonable contact models among different materials, the paper has developed finite element analysis models of rebar-penetrated connection between gangue concrete filled steel tubular column and reinforced gangue concrete beam using software ABAQUS 6.10. Furthermore, finite element analysis results are verified by experiments, demonstrating that the load-displacement curves computed by ABAQUS agree with experimental curves very well and finite element analysis models are reliable to analyze the behavior of the rebar-penetrated connection. Then, these models are used to conduct stress analysis on the composite connection to investigate the failure modes and the force-transferring mechanism. The analysis results show that the rebar-penetrated connection, with full and spindle-shaped load-displacement hysteretic curve, has the reasonable force-transferring route and good energy-dissipation capacity. Finally, the effects of axial load level, stiffness ratio of beam and column, steel ratio and compressive strength of gangue concrete on the behavior of the connection are investigated on the basis of the different models by changing the parameters.

 

Keywords: Gangue concrete filled steel tubular, Connection, Finite element analysis, Cyclic behavior, Failure mode, Parametric analysis

 

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