Seismic behavior and damage assessment of mid-rise cold-formed steel-framed buildings with normal and reinforced beam-column joints

• Autorzy: Jiang Liqiang , Zhang Xingshuo , Ye Jihong , Jiang Lizhong , Zhou Lingyu

Identyfikatory

DOI

10.1007/s43452-021-00278-4

• Języki publikacji: EN

Abstrakty

EN

This paper investigated the effects of normal and reinforced beam–column joints on seismic behavior and damages of mid-rise cold-formed steel (CFS) framed buildings, where the reinforced beam–column joint is strengthened by a pair of steel blocks and a gusset plate. Shaking table tests were conducted on a 5-story CFS frame building with normal beam-column joint (CFSM-NJ) and a 5-story CFS frame building with same configurations but with reinforced beam–column joint (CFSM-RJ). Formulae fitted from four damage models were used to assess the seismic damage indexes of these test buildings, and the assessed results were validated by the damage indexes observed from tests. The results show the following: (1) the CFSM-NJ failed due to plastic hinges formed at the column bases and large separate deformation at the beam-column joints; however, the weaken-story failure mode was appeared on the CFSM-RJ; (2) the peak inter-story displacement of the building was reduced about 10–30% due to the reinforced beam-column joints; (3) the Park-Ang model is more appropriate for seismic damage assessment of column bases, but all the damage models overestimates the seismic damages of CFS beams. Finally, the authors comment on the difference between the assessed seismic damage indexes and the observed results, and the maximum damage indexes obtained from the simplified formulae are recommended as the preliminary assessed damages for mid-rise CFS buildings.

Słowa kluczowe

EN

cold-formed steel-framed structure; mid-rise building; beam-column joint; seismic behavior; seismic damage

PL

konstrukcja stalowa; uszkodzenie sejsmiczne; budynek

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2021
• Tom: Vol. 21, no. 3
• Strony: 675--690
• Opis fizyczny: Bibliogr. 52 poz., fot., rys., wykr.

Twórcy

autor

Jiang Liqiang

• School of Civil Engineering, Central South University, Changsha 410075, China
• Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu 610065, China
• National Engineering Laboratory for High-Speed Railway Construction, Central South University, Changsha 410075, China

autor

Zhang Xingshuo

• School of Civil Engineering, Central South University, Changsha 410075, China
• National Engineering Laboratory for High-Speed Railway Construction, Central South University, Changsha 410075, China

autor

Ye Jihong

• Jiangsu Key Laboratory Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou 211116, China

autor

Jiang Lizhong

• School of Civil Engineering, Central South University, Changsha 410075, China
• National Engineering Laboratory for High-Speed Railway Construction, Central South University, Changsha 410075, China

autor

Zhou Lingyu

• School of Civil Engineering, Central South University, Changsha 410075, China

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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)