Vol. 16, No. 4, pp. 346-353 (2020)
MECHANICAL BEHAVIORS OF SIDE-PLATE JOINT BETWEEN WALLED
CONCRETE-FILLED STEEL TUBULAR COLUMN AND H-SHAPED STEEL BEAM
Yu-Qi Huang 1, *, Ji-Ping Hao 1, Rui Bai 2, Chun-Lei Fan 1 and Qiang Xue 1
1 School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an, China
2 Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
*(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 28 February 2020; Revised: 25 August 2020; Accepted: 10 September 2020
DOI:10.18057/IJASC.2020.16.4.7
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ABSTRACT
The mechanical behaviors of an innovative joint, the side-plate joint, that connects a walled concrete-filled steel tubular column and an H-shaped steel beam, were analytically and experimentally investigated. The mechanical characteristics of the joint panel zone under shear were studied. A three-stage shear-yield model was established for describing the relation between shear force and shear deformation of the joint panel zone. Three failure modes and the corresponding evaluating criteria were proposed for design practices based on the shear-yield model and internal force transfer mechanism. To verify the reliability of the proposed method, three full-scale walled concrete-filled steel tubular column joints were tested under cyclic loads. Moreover, the hysteresis curve, skeleton curve, ductility, energy dissipation capacity, stiffness degradation, and strain of the joint were evaluated based on the experimental results. The predicted failure mode and ultimate bearing capacity predicted by the proposed method show good agreement with the test results; the hysteresis loop of the specimen is relatively full and shuttle-shaped without discernible pinching, which indicates the side-plate joint exhibits preferable deformation performance and possesses an energy dissipation capacity.
KEYWORDS
Walled concrete-filled steel tubular column, Side-plate joint, Panel zone, Failure mode, Full-scale specimen, Hysteresis behavior
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