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Extended Formulation of Stress Concentration Factors for CFST T-Joints


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Title: Extended Formulation of Stress Concentration Factors for CFST T-Joints
Authors: Zheng, Jian / Nakamura, Shozo / Ge, Yajing / Chen, Kangming / Wu, Qingxiong
Issue Date: 18-Oct-2019
Publisher: American Society of Civil Engineers (ASCE)
Citation: Journal of Bridge Engineering, 25(1), art.no.06019006; 2020
Abstract: In previous research, the authors numerically investigated 212 finite-element (FE) models of concrete-filled steel tubular (CFST) T-joints under axial force in the brace to derive formulae for stress concentration factors (SCFs). The formulations involve four nondimensional parameters: diameter ratio β, diameter-to-thickness ratio of chord 2γ, thickness ratio τ, and relative chord length α. In the current study, the earlier formulation was extended to include four additional loading conditions: in-plane bending (IPB) in the brace, out-of-plane bending (OPB) in the brace, axial compression in the chord, and IPB in the chord. The validity of the new SCF formulae was demonstrated by comparing the SCFs obtained using the formulae with the results of numerical analysis.
Keywords: CFST T-joints / Stress concentration factors / Hot spot stress / Fatigue / Finite element analysis / Parametric formulae
URI: http://hdl.handle.net/10069/39669
ISSN: 10840702
DOI: 10.1061/(ASCE)BE.1943-5592.0001502
Rights: © 2019 American Society of Civil Engineers. This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://ascelibrary.org/doi/10.1061/(ASCE)BE.1943-5592.0001502.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/39669

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