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Extended Formulation of Stress Concentration Factors for CFST T-Joints

Zheng, Jian / Nakamura, Shozo / Ge, Yajing / Chen, Kangming / Wu, Qingxiong

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 $2 γ$ , 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.

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Extended Formulation of Stress Concentration Factors for CFST T-Joints

Zheng, Jian / Nakamura, Shozo / Ge, Yajing / Chen, Kangming / Wu, Qingxiong

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 $2 γ$ , 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.

Extended Formulation of Stress Concentration Factors for CFST T-Joints

Zheng, Jian / Nakamura, Shozo / Ge, Yajing / Chen, Kangming / Wu, Qingxiong

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 $2 γ$ , 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.

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Title:

Extended Formulation of Stress Concentration Factors for CFST T-Joints

Contributors:

Zheng, Jian (author) / Nakamura, Shozo (author) / Ge, Yajing (author) / Chen, Kangming (author) / Wu, Qingxiong (author)

Published in:

Journal of Bridge Engineering ; 25

Publication date:

2019-10-18

ISSN:

1084-0702 , 1943-5592

DOI:

https://doi.org/10.1061/(ASCE)BE.1943-5592.0001502

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

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