Vol. 17, No. 4, pp. 385-393 (2021)
NUMERICAL INVESTIGATION ON CYCLIC BEHAVIOR OF RING-BEAM
CONNECTION TO GANGUE CONCRETE FILLED STEEL TUBULAR COLUMNS
Chen Fang 1, Guo-Chang Li 2 and Lei Zhang 3, 4, *
1 Midwest Roadside Safety Facility, University of Nebraska-Lincoln, Lincoln, Nebraska 68583, USA
2 Professor, Shenyang Jianzhu University, Shenyang, Liaoning110168, China
3 Lecturer, School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China
4 Postdoctor, Institute of Geotechnical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 10 July 2020; Revised: 26 April 2021; Accepted: 1 May 2021
DOI:10.18057/IJASC.2021.17.4.7
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ABSTRACT
As a promising composite structure, gangue concrete filled steel tubular (GCFST) column exhibites favarable characteristics including high strength and economic efficiency. This paper conducted numerical investiagations on structural behavior of a ring-beam connection to GCFST column with concrete beam under cyclic loading. Furthermore, finite element models of column-beam connections were developed using ABAQUS and validated against full-scale experimental tests to identify accuracy of selected modeling approaches. Using these validated models, stress distribution of each component was examined to study the force-transferring mechanism among the components and failure modes of the ring-beam connection. Research study indicated that the ring-beam connection showed a reasonable force-transferring mechanism under cyclic loading and the remarkable earthquake-resistant performance with high capacity and acceptable ductility. Finally, parametric studies were performed to assess the influences of beam-to-column stiffness ratio,steel ratio, axial load level, and concrete compressive strength on connection cyclic behaviors. Parametric studies provided some suggestions and references for the application of the ring-beam connection in various engineering projects.
KEYWORDS
Column-beam connection, Gangue concrete filled steel tube, Cyclic behavior, Finite element modeling, Ring beam
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