Steel and Composite Structures

  • 제38권3호
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  • Pages.281-291
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  • 2021
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

An equivalent single-layer theory for free vibration analysis of steel-concrete composite beams

  • Sun, Kai Q. (School of Civil Engineering, Beijing Jiaotong University) ;
  • Zhang, Nan (School of Civil Engineering, Beijing Jiaotong University) ;
  • Liu, Xiao (School of Civil Engineering, Beijing Jiaotong University) ;
  • Tao, Yan X. (Railway Engineering Research Institute, China Academy of Railway Sciences Corporation Limited)
  • 투고 : 2020.07.22
  • 심사 : 2020.10.18
  • 발행 : 2021.02.10
⟨ 이전 논문 다음 논문 ⟩

초록

An equivalent single-layer theory (EST) is put forward for analyzing free vibrations of steel-concrete composite beams (SCCB) based on a higher-order beam theory. In the EST, the effect of partial interaction between sub-beams and the transverse shear deformation are taken into account. After using the interlaminar shear force continuity condition and the shear stress free conditions at the top and bottom surface, the displacement function of the EST does not contain the first derivatives of transverse displacement. Therefore, the C0 interpolation functions are just demanded during its finite element implementation. Finally, the EST is validated by comparing the results of two simply-supported steel-concrete composite beams which are tested in laboratory and calculated by ANSYS software. Then, the influencing factors for free vibrations of SCCB are analyzed, such as, different boundary conditions, depth to span ratio, high-order shear terms, and interfacial shear connector stiffness.

키워드

과제정보

The research described in this paper was financially supported by the Fundamental Research Funds for the Central Universities (2020JBM121) and the State Key Laboratory for Track Technology of High-Speed Railway, China (2018Y179).

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피인용 문헌

  1. Exact Dynamic Characteristic Analysis of Steel-Concrete Composite Continuous Beams vol.2021, 2021, https://doi.org/10.1155/2021/5577276