Computers and Concrete

  • 제11권4호
  • /
  • Pages.291-304
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  • 2013
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Creep analysis of CFT columns subjected to eccentric compression loads

  • Han, Bing (School of Civil Engineering, Beijing Jiaotong University) ;
  • Wang, Yuan-Feng (School of Civil Engineering, Beijing Jiaotong University) ;
  • Wang, Qian (School of Civil Engineering, Beijing Jiaotong University) ;
  • Zhang, Dian-Jie (School of Civil Engineering, Beijing Jiaotong University)
  • 투고 : 2011.07.07
  • 심사 : 2012.09.19
  • 발행 : 2013.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

By considering the creep characteristics of concrete core under eccentric compression, a creep model of concrete filled steel tubes (CFT) columns under eccentric compressive loads is proposed based on the concrete creep model B3. In this proposed model, a discrete element method is introduced to transform the eccentric loading into axial loading. The validity of the model is verified by comparing the predicting results with the published creep experiments results on CFT specimens under compressive loading, together with the predicting values based on other concrete creep models, such as ACI209, CEB90, GL2000 and elastic continuation and plastic flow theory. By using the proposed model, a parameters study is carried out to analysis the effects of practical design parameters, such as concrete mix (e.g. water to cement ratio, aggregate to cement ratio), steel ratio and eccentricity ratio, on the creep of CFT columns under eccentric compressive loading.

키워드

과제정보

연구 과제 주관 기관 : National Science Foundation of China

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피인용 문헌

  1. Creep of compression fly ash concrete-filled steel tubular members vol.114, 2017, https://doi.org/10.1016/j.tws.2017.01.034
  2. Time-Dependent Behavior of Recycled Aggregate Concrete–Filled Steel Tubular Columns vol.141, pp.10, 2015, https://doi.org/10.1061/(ASCE)ST.1943-541X.0001241
  3. Long-term structural analysis and stability assessment of three-pinned CFST arches accounting for geometric nonlinearity vol.20, pp.2, 2016, https://doi.org/10.12989/scs.2016.20.2.379
  4. GS-MARS method for predicting the ultimate load-carrying capacity of rectangular CFST columns under eccentric loading vol.25, pp.1, 2013, https://doi.org/10.12989/cac.2020.25.1.001
  5. FE analysis of ultimate strength of circular CFT columns considering creep effect vol.28, pp.3, 2013, https://doi.org/10.12989/cac.2021.28.3.333