Flexural behavior of square hollow steel-reinforced concrete members

• Autorzy: Ren Qingxin , Ding Jinan , Wang Qinghe , Liang Hui

Identyfikatory

DOI

10.1007/s43452-021-00361-w

• Języki publikacji: EN

Abstrakty

EN

This paper presents an experimental investigation on the flexural behavior of the square hollow steel-reinforced concrete (HSRC) members. A total of six specimens with different hollow ratios and steel tube ratios were prepared, and their failure modes, strain distributions, the mid-span deflection, and bending moment were recorded. The obtained results showed that the HSRC specimen fails in a ductile mode and no local buckling occurs in the inner steel tube. The increase of steel tube ratio leads to the improvements of the ultimate bending moment, the flexural stiffness and the ductility coefficient. The ultimate bending moment can be increased by 52.8% when the steel tube ratio increases from 0 to 2.96%. To expand the ranges of parameters, a finite element model (FEM) was developed and benchmarked against the test results from this study. Then, a parametric study was conducted to quantify various influential factors on the flexural behavior of the square HSRC members, and the key influential factors were further determined. Based on the parametric investigation, a simplified design method on the prediction of the ultimate bending moment for the square HSRC members was provided to account for the contribution of the incompletely full-section yielded steel tube, and the predicted results from the simplified design method were satisfactorily in accordance with the experimental and numerical results.

Słowa kluczowe

EN

steel concrete composite structure; hollow steel-reinforced concrete member; flexural behavior; experimental investigation; finite element modelling; design method

PL

konstrukcja stalowo-betonowa; zginanie; metoda elementów skończonych

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 1
• Strony: art. no. e34, 2022
• Opis fizyczny: Bibliogr. 39 poz., rys., tab., wykr.

Twórcy

autor

Ren Qingxin

• School of Civil Engineering, Shenyang Jianzhu University, 25 Hunnan Rd., Shenyang 110168, Liaoning, China

autor

Ding Jinan

• School of Civil Engineering, Shenyang Jianzhu University, 25 Hunnan Rd., Shenyang 110168, Liaoning, China

autor

Wang Qinghe

• School of Civil Engineering, Shenyang Jianzhu University, 25 Hunnan Rd., Shenyang 110168, Liaoning, China

• https://orcid.org/0000-0002-1530-4555

autor

Liang Hui

• School of Civil Engineering, Shenyang Jianzhu University, 25 Hunnan Rd., Shenyang 110168, Liaoning, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)