Steel and Composite Structures

  • 제24권3호
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  • Pages.287-296
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  • 2017
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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

Nonlinear stability analysis of a radially retractable hybrid grid shell in the closed position

  • Cai, Jianguo (Key Laboratory of C & PC Structures of Ministry of Education, National Prestress Engineering Research Center, Southeast University) ;
  • Zhang, Qian (Key Laboratory of C & PC Structures of Ministry of Education, National Prestress Engineering Research Center, Southeast University) ;
  • Jiang, Youbao (Key Laboratory of C & PC Structures of Ministry of Education, National Prestress Engineering Research Center, Southeast University) ;
  • Xu, Yixiang (Department of Civil Engineering, Strathclyde University) ;
  • Feng, Jian (Key Laboratory of C & PC Structures of Ministry of Education, National Prestress Engineering Research Center, Southeast University) ;
  • Deng, Xiaowei (Department of Civil Engineering, University of Hong Kong)
  • 투고 : 2016.06.13
  • 심사 : 2017.03.31
  • 발행 : 2017.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

The buckling capacity of a radially retractable hybrid grid shell in the closed position was investigated in this paper. The geometrically non-linear elastic buckling and elasto-plastic buckling analyses of the hybrid structure were carried out. A parametric study was done to investigate the effects rise-to-span ratio, beam section, area and pre-stress of cables, on the failure load. Also, the influence of the shape and scale of imperfections on the elasto-plastic buckling loads was discussed. The results show that the critical buckling load is reduced by taking account of material non-linearity. Furthermore, increasing the rise-to-span ratio or the cross-section area of steel beams notably improves the stability of the structure. However, the cross section area and pre-stress of cables pose negligible effect on the structural stability. It can also be found that the hybrid structure is highly sensitive to geometric imperfection which will considerably reduce the failure load. The proper shape and scale of the imperfection are also important.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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