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

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

Identyfikatory

DOI

10.24425/ace.2024.148926

• 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

EN

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

PL

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

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• 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

• https://orcid.org/0009-0006-0561-3289

autor

Lv Lei

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

• https://orcid.org/0009-0007-7735-2476

autor

Gao Yuqiang

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

• https://orcid.org/0009-0005-7964-9594

autor

Fu Zhongqiu

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

• https://orcid.org/0009-0002-2538-9967

Bibliografia

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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).