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- Title
黏土中大直径钢圆筒在桩靴贯入时的稳定性研究.
- Authors
郝心童; 李书兆; 李伟; 梁文洲; 刘润; 曹添铭
- Abstract
A large-diameter thin-walled steel cylinder is used as the protective structure of a submarine production system. Near the production system, there is a jack-up rig with frequent operations of spudcan penetration. Therefore, the stress and deformation of the steel cylinder during spudcan penetration have attracted many attentions. Centrifuge model tests are carried out to investigate the behaviour of steel cylinders caused by spudcan penetration. Then, CEL method verified by a centrifuge test is used to analyze the influence of spudcan penetration on the stability of steel cylinders under different spudcan-cylinder clearances. The results show that the additional stress and displacement of the cylinder caused by the spudcan penetration decrease with the increase of the spudcan-cylinder clearance. And the reduction degree decreases with the increase of the spudcancylinder clearance. Due to the different spudcan-cylinder clearances, there are two stress modes for the steel cylinder. When the clearance is twice the diameter of the spudcan, the additional stress of cylinder can reach 110 MPa, indicating that the affected distance of the spudcan penetration on cylinder can reach more than 2 times the spudcan diameter.
- Publication
Engineering Mechanics / Gongcheng Lixue, 2024, Vol 41, Issue 5, p201
- ISSN
1000-4750
- Publication type
Article
- DOI
10.6052/j.issn.1000-4750.2022.05.0428