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Calculation of Hydro-Dynamic Stability of the Soil Inside Bucket in the Process of Bucket Foundation Penetration |
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| Authors: | YANG Shugeng XU Tao MENG Zhaoying and REN Guiyong Associate Profeesor |
| Institution: | YANG Shugeng,XU Tao,MENG Zhaoying and REN Guiyong Associate Profeesor,Department of Ocean Engineering,Tianjin University,Tianjin 300072,P. R. China. Graduate Student,Department of Ocean Engineering,Tianjin University,Tianjin 300072,P. R. China. Professor,Department of Ocean Engineering,Tianjin University,Tianjin 300072,P. R. China. |
| Abstract: | The olTshore platform with bucket foundations is a new type of offshore platform that distinguishes from traditional template platforms by replacing driven piles with bucket foundations. The suction penentration of bucket foundation is a complicated hydro-dynamic process. The key of this process is the seepage field caused by the difference of pressure applied on purpose inside and outside the bucket. The appearance and developement of seepage field has a decisive influence on the suction penetration process. In this study, the finite element analysis method is applied to the dynamic simulation of the seepage field of suction penetration of bucket foundation. A criterion is suggested to distinguish the hydro-dynamic stability of the soil inside the bucket according to the critical hydraulic gradient method. The reliability of the model and its applicability to engineering practice have been proved through comparison between the results of model test and finite element calculation. |
| Keywords: | offshore structures bucket foundation finite element method seepage field soil stability |
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