Steel and Composite Structures

  • 제33권5호
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  • Pages.755-765
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  • 2019
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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Nonlinear analyses of steel beams and arches using virtual unit moments and effective rigidity

  • Koubova, Lenka (Department of Structural Mechanics, Faculty of Civil Engineering, VSB - Technical University of Ostrava) ;
  • Janas, Petr (Department of Structural Mechanics, Faculty of Civil Engineering, VSB - Technical University of Ostrava) ;
  • Markopoulos, Alexandros (Department of Applied Mathematics, IT4Innovations, VSB - Technical University of Ostrava) ;
  • Krejsa, Martin (Department of Structural Mechanics, Faculty of Civil Engineering, VSB - Technical University of Ostrava)
  • 투고 : 2017.11.02
  • 심사 : 2019.11.28
  • 발행 : 2019.12.10
⟨ 이전 논문 다음 논문 ⟩

초록

This study examined geometric and physical nonlinear analyses of beams and arches specifically from rolled profiles used in mining and underground constructions. These profiles possess the ability to create plastic hinges owing to their robustness. It was assumed that displacements in beams and arches fabricated from these profiles were comparable with the size of the structure. It also considered changes in the shape of a rod cross-section and the nonlinearities of the structure. The analyses were based on virtual unit moments, effective flexural rigidity of used open sections, and a secant method. The use of the approach led to a solution for the "after-critical" condition in which deformation increased with decreases in loads. The solution was derived for static determinate beams and static indeterminate arches. The results were compared with results obtained in other experimental tests and methods.

키워드

과제정보

연구 과제 주관 기관 : VSB - Technical University of Ostrava

This project was completed with the financial support provided to VSB - Technical University of Ostrava by the Czech Ministry of Education, Youth and Sports from the budget for conceptual development of science, research, and innovations for the year 2016.

참고문헌

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