Analysis of ultimate bearing capacity of pressure spherical shell with openings

As the main pressure bearing structure of the deep submerger, it is inevitable to open manholes and observation holes on the pressure spherical shell, and the openings will affect the ultimate bearing capacity of the pressure spherical shell. In this paper, 7000m pressure spherical shell is taken as...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 513; no. 1; pp. 12043 - 12049
Main Authors Wei, Yan, Jianting, Guo, Yong, Shen
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2020
Subjects
Bearing capacity
Bulkheads
Finite element method
Manholes
Pressure
Spherical shells
Strengthening
Thickness
Working conditions
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Summary:As the main pressure bearing structure of the deep submerger, it is inevitable to open manholes and observation holes on the pressure spherical shell, and the openings will affect the ultimate bearing capacity of the pressure spherical shell. In this paper, 7000m pressure spherical shell is taken as the research object, the finite element model of the spherical shell is established based on ANSYS, and the influence of the opening size on the ultimate bearing capacity of the spherical shell is calculated. At the same time, the trunk bulkhead strengthening method is adopted, and the thickness and height are taken as variables to calculate the change of the ultimate bearing capacity under different working conditions. The results show that the wall strengthening can significantly reduce the influence of opening on the pressure spherical shell, and the appropriate increase of thickness or decrease of height can increase the ultimate bearing capacity of the structure.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/513/1/012043