[1] Ding MingminLuo BinChen XiangnanGuo ZhengxingGuan Dongzhi,. Stability analysis of ellipse-like suspen-dome structureswith low rise-span ratio [J]. Journal of Southeast University (English Edition), 2016, 32 (1): 51-57. [doi:10.3969/j.issn.1003-7985.2016.01.010]

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Stability analysis of ellipse-like suspen-dome structureswith low rise-span ratio()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

32

Issue:

2016 1

Page:

51-57

Research Field:

Civil Engineering

Publishing date:

2016-03-20

Info

Title:

Stability analysis of ellipse-like suspen-dome structureswith low rise-span ratio

Author(s):

Ding MingminLuo BinChen XiangnanGuo ZhengxingGuan Dongzhi

Key Laboratory of Concrete and Pre-stressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
National Pre-Stressed Engineering Center of China, Southeast University, Nanjing 210096, China

Keywords:

suspen-dome;  single-layer reticulated shell;  ellipse-like;  stability analysis;  initial geometric imperfection;  geometric nonlinearity;  material nonlinearity

PACS:

TU393.3

DOI:

10.3969/j.issn.1003-7985.2016.01.010

Abstract:

To investigate the effects of initial geometric imperfection and material nonlinearity on the stability analysis of the suspen-dome, the steel roof of Jiangsu Culture Sports Center Gymnasium was utilized as a numerical model, and modal analyses were performed. Then, linear buckling analysis, geometric nonlinear stability analysis, geometric nonlinear stability analysis with initial imperfection, and double nonlinear analysis considering material nonlinearity and geometric nonlinearity were discussed in detail to compare the stability performance of the ellipse-like suspen-dome and the single-layer reticulated shell. The results show that the cable-strut system increases the integrity of the suspen-dome, and moderates the sensibility of the single-layer reticulated shell to initial geometric imperfection. However, it has little influence on integral rigidity, fundamental vibration frequencies, linear ultimate live loads, and geometric nonlinear ultimate live loads without initial imperfection. When considering the material nonlinearity and initial imperfection, a significant reduction occurs in the ultimate stability capacities of these two structures. In this case, the suspen-dome with a low rise-span ratio is sensitive to the initial imperfection and material nonlinearity. In addition, the distribution pattern of live loads significantly influences the instability modes of the structure, and the uniform live load with full span is not always the most dangerous case.

References:

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Memo

Memo:

Biographies: Ding Mingmin(1989—), male, graduate; Luo Bin(corresponding author), male, doctor, professor, seurobin@seu.edu.cn.
Foundation items: The National Key Technology R& D Program of China(No.2012BAJ03B06), the National Natural Science Foundation of China(No.51308105), the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD), the Fundamental Research Funds for the Southeast University(No.KYLX_0152, SJLX_0084, KYLX_0149).
Citation: Ding Mingmin, Luo Bin, Chen Xiangnan, et al. Stability analysis of ellipse-like suspen-dome structures with low rise-span ratio[J].Journal of Southeast University(English Edition), 2016, 32(1):51-57. DOI:10.3969/j.issn.1003-7985.2016.01.010.

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