Experimental of buckling restrained brace hysteretic performance with carbon fiber wrapped in concrete

• Autorzy: Fang, Yuan , Lv, Lei , Gao, Yuqiang , Fu, Zhongqiu
• Języki publikacji: EN

Abstrakty

EN

Buckling restrained brace is an important structure for improving the seismic resistance of structures. Conducting research on new types of buckling restrained brace can improve the seismic performance and reliability of buckling resistant support. Four different types of buckling restrained braces specimens were designed and manufactured: cross-shaped square steel pipe members, cross-shaped round steel pipe members, cross-shaped carbon fiber members, and in-line carbon fiber members. By conducting quasi-static tests, the force displacement hysteresis curves, skeleton curves, stiffness degradation, equivalent viscous damping coefficient, and energy dissipation ratio of four different types of buckling restrained brace were analyzed. The research results showed that all four buckling restrained brace specimens have good hysteresis performance. The load-bearing capacity and energy consumption performance of the three specimens of square steel pipe, round steel pipe and carbon fiber with the same core unit are the same, but the inline type is worse than the cross type. The core unit specimen with a width of 80 mm is about 60% higher in bearing capacity and energy consumption than a specimen with a width of 50 mm. The core unit of some specimens undergoes multi-wave buckling. For carbon fiber specimens, the CFRP is prone to breakage due to the lateral thrust of the restraining unit. Therefore, steel hoop or stirrup should be added to the end to improve the restraint effect when designing and manufacturing.

Słowa kluczowe

PL

włókno węglowe; współczynnik tłumienia; beton lekki kruszywowy; krzywe histerezy; histereza

EN

carbon fiber; lightweight aggregate concrete; hysteretic behavior; damping coefficient; hysteretic curves

• Czasopismo: Archives of Civil Engineering
• Rocznik: 2024
• Tom: Vol. 70, nr 1
• Strony: 527--541
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Fang, Yuan

• Department of Architecture and Civil engineering, Zhejiang Tongji Vocational College of Science and Technology, Hangzhou 311231, China,

autor

Lv, Lei

• Department of Architecture and Civil engineering, Zhejiang Tongji Vocational College of Science and Technology, Hangzhou 311231, China,

autor

Gao, Yuqiang

• College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China,

autor

Fu, Zhongqiu

• College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China,

Bibliografia

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• [4] D. Miller and L. Fahnestock, “Self-centering buckling restrained braces for advanced seismic performance”, in Proceedings of the 2011 Structures Congress. ASCE, 2011, pp. 960–970, doi: 10.1061/41171(401)85.
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• [7] H. Wu, “Effects of restraining ratio on hysteretic performance of concrete-filled steel tube buckling-restrained braces”, M.A. thesis, Harbin Institute of Technology, 2015.
• [8] Y. Guo and X. Wang, “Bolt connection behavior and design of a four-angle assembled steel buckling-restrained brace: theoretical analysis”, Engineering Mechanics, vol. 31, no. 1, pp. 56–63, 2014, doi: 10.6052/j.issn.1000-4750.2013.01.0004.
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• [11] M. Jia, F. Li, and B. Lu, “Experimental study on assembled buckling-restrained braces wrapped with carbon fiber”, Journal of Harbin Institute of Technology, vol. 48, no. 6, pp. 98–104, 2016, doi: 10.11918/j.issn.0367-6234.2016.06.016.
• [12] GB/T 228-2002 Metallic materials-Tensile testing at ambient temperature. China Architecture & Building Press, 2002.
• [13] H. T. Zhao, G. Shi, Y. Gao, “Experimental study on cyclic behaviour of low yield point steel buckling-restrained braces”, Engineering Structures, vol. 277, art. no. 115464, 2023, doi: 10.1016/j.engstruct.2022.115464.
• [14] J. Z. Tong, E. Y. Zhang, Y. L. Guo, and C. Q. You, “Cyclic experiments and global buckling design of steel-angleassembled buckling-restrained braces”, Bulletin of Earthquake Engineering, vol. 20, no. 10, pp. 5107–5133,2022, doi: 10.1007/s10518-022-01389-w.
• [15] L. Gu, X. Gao and J. Xu, “Experimental research on seismic performance of BRB concrete frames”, Journal of Building Structures, vol. 32, no. 7, pp. 101–111, 2011, doi: 10.14006/j.jzjgxb.2011.07.015.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).

Identyfikatory

DOI

10.24425/ace.2024.148926