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Static Stability Analysis of Single-Layer Reticulated Spherical Shell with Kiewitt-Sunflower Type

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Abstract

In this study, we use a large-scale parameter analysis and linear regression method to characterize the static stability of Kiewitt-sunflower-type single-layer reticulated spherical shell. Based on more than 15,000 numerical cases of elastic–plastic load–displacement process, and the investigations on the influence of buckling and instability mode, rise-span and ring-numbers ratio, efficiency of the structure, load distribution, support conditions, size of the initial geometric imperfection and distribution patterns are proceeded. We summarize the key effect for stable performance of structure, and develop the formulation to calculate the ultimate capacity of stability. The results show that Kiewitt-sunflower type single-layer reticulated spherical shell is sensitive to defect, and different distribution patterns of geometry defect lead to different structural buckling. The ultimate stability bearing capacity can be improved by increasing the rise-span and ring-numbers ratio. The asymmetrical load distribution has little effect on the stability. The most unfavorable eigenmode is arbitrary, and it is generally not the lowest order. We summarize the key effect for stable performance of structure, and develop the formulation to calculate the ultimate capacity of stability.

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Funding

This study was funded by Guangxi Natural Science Foundation (2018JJB160052), Application of key technology in building construction of prefabricated steel structure (BB30300105), Research grant for 100 Talents of Guangxi Plan, The starting research grant for High-level Talents from Guangxi University, Science and Technology Major Project of Guangxi Province (AA18118055), and the Luxembourg National Research Fund for Intuitive modeling and SIMulation platform (IntuiSIM) (PoC17/12253887).

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Authors and Affiliations

  1. College of Civil Engineering and Architecture, Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning, 530004, People’s Republic of China

    Peng Yu, Wei**g Yun, Sheng He & Yiming Zhou

  2. Institute of Computational Engineering, University of Luxembourg, Maison du Nombre, 6 Avenue de la Fonte, 4364, Esch-sur-Alzette, Luxembourg

    Stéphane Bordas

  3. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan

    Stéphane Bordas

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  1. Peng Yu
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  2. Wei**g Yun
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  3. Stéphane Bordas
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  4. Sheng He
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  5. Yiming Zhou
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Correspondence to Sheng He.

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Yu, P., Yun, W., Bordas, S. et al. Static Stability Analysis of Single-Layer Reticulated Spherical Shell with Kiewitt-Sunflower Type. Int J Steel Struct 21, 1859–1877 (2021). https://doi.org/10.1007/s13296-021-00539-1

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  • DOI: https://doi.org/10.1007/s13296-021-00539-1

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