Experimental study on seismic performance of double-level yielding buckling-restrained braced concrete frames

• Autorzy: Zhang Zhe , Zhang Sheng-Nan , Deng En-Feng , Zhou Tong-Tong , Yi Yu , He Hao , Li Na-Na

Identyfikatory

DOI

10.1007/s43452-020-00049-7

• Języki publikacji: EN

Abstrakty

EN

This paper focused on the seismic performance of buckling-restrained braced concrete frame. Two different systems including the single-level yielding buckling-restrained braced concrete frame (SYBRBCF) and the double-level yielding buckling-restrained braced concrete frame (DYBRBCF) were designed for comparison. Compared with the single-level yielding buckling-restrained braces which are similar to many existing types of buckling-restrained braces, the double-level yielding buckling-restrained braces (DYBRBs) have two different energy absorption mechanisms that are expected to provide energy dissipations under the frequent earthquakes and rare earthquakes. To comparatively investigate the seismic performances of the two systems, cyclic tests were performed on one DYBRBCF specimen and another SYBRBCF specimen. The seismic response including the hysteretic curves, backbone curves, ductility coefficients, equivalent damping ratios, strengths, and stiffness degradations of the two experimental specimens was compared and analyzed. The test results indicate that the properly designed SYBRBCF and DYBRBCF can both exhibit the full hysteretic curves, meet the strong-column–weak-beam design requirement, and achieve the expected seismic performance. However, it was found that the ductility coefficient and energy dissipation capacity of the DYBRBCF were 72.2% and 23.4% higher than those of the SYBRBCF. The present study also provided useful design recommendations, which were beneficial to promote the application of DYBRBs.

Słowa kluczowe

EN

buckling-restrained braces; double-level yielding; single-level yielding; concrete frame; seismic performance; cyclic test

PL

wyboczenie; uplastycznienie; odporność sejsmiczna

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 2
• Strony: 191--206
• Opis fizyczny: Bibliogr. 26 poz., fot., rys., tab., wykr.

Twórcy

autor

Zhang Zhe

• School of Civil Engineering, Zhengzhou University, Zhengzhou 450000, China

autor

Zhang Sheng-Nan

• School of Civil Engineering, Zhengzhou University, Zhengzhou 450000, China

autor

Deng En-Feng

• School of Civil Engineering, Zhengzhou University, Zhengzhou 450000, China

autor

Zhou Tong-Tong

• School of Civil Engineering, Zhengzhou University, Zhengzhou 450000, China

autor

Yi Yu

• Henan Urban Planning Institute and Corporation, Zhengzhou 450000, China

autor

He Hao

• Henan Urban Planning Institute and Corporation, Zhengzhou 450000, China

autor

Li Na-Na

• Henan Urban Planning Institute and Corporation, Zhengzhou 450000, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)