Vol. 12, No. 4, 2017

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ISSN: 1559-3959
Shear capacity of T-shaped diaphragm-through joints of CFST columns

Bin Rong, Rui Liu, Ruoyu Zhang, Shuai Liu and Apostolos Fafitis

Vol. 12 (2017), No. 4, 373–390
Abstract

Diaphragm-through joints between rectangular concrete-filled steel tubular (CFST) columns and steel beams have been widely used in engineering design. In order to investigate the shear capacity of T-shaped diaphragm-through joints, three such joints were tested under seismic cyclic loading. The test results showed that the main contributors to the shear capacity of the joint are the core concrete and the steel tube. However, the flanges of the steel tube have little effect on the shear capacity. In addition, based on the principle of deformation coordination, a calculation method of shear force-deformation skeleton curve for T-shaped diaphragm-through joints is proposed. The theoretical predictions of the method are well fitted with the experimental results.

Keywords
CFST column, diaphragm-through joint, shear capacity, experimental research
Milestones
Received: 2 May 2016
Revised: 8 October 2016
Accepted: 12 October 2016
Published: 20 May 2017
Authors
Bin Rong
Key Laboratory of Coast Civil Structure Safety
Department of Civil Engineering
Tianjin University
Tianjin, 300072
China
Rui Liu
Department of Civil Engineering
Tianjin University
Tianjin, 300072
China
Ruoyu Zhang
School of Civil Engineering
Tianjin University
Weijin Road 92
Tianjin, 300072
China
Shuai Liu
Department of Civil Engineering
Tianjin University
Tianjin, 300072
China
Apostolos Fafitis
Department of Civil and Environmental Engineering
Arizona State University
Tempe, AZ 85287
United States