海上筒基平台沉贯时筒内土体稳定的数值计算研究

Water-dynamic Stability of the Soil Inside Bucket in the Process of Offshore Bucket Foundations Platform Penetration

文中用有限元分析方法对筒形基础负压沉贯渗流场进行动态模拟，提出了筒形基础负压沉贯过程中筒内上体稳定性的有限元计算模型，根据临界水力坡降方法建立了筒内土体稳定性的判别准则。

This paper, using a finite element analysis method, describes the dynamic simulation on the seepage field in the soil in the process of the bucket foundation platform penetration provides a finite element calculation model of water-dynamic stability inside bucket in the process of suction penetration of the bucket foundation platform, gives the formation of an united criterion to distingUish the water-dynamic stability of the soil inside bucket according to the critical hydraulic gradient method. The reliability of calculation model and the applicability in engineering have been proved in the results.