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首页> 外文会议>Constitutive modeling of geomaterials : advances and new applications >3D Large Deformation FE Analysis of Spudcan Foundations on Layered Clays Using CEL Approach
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3D Large Deformation FE Analysis of Spudcan Foundations on Layered Clays Using CEL Approach

机译：基于CEL方法的层状粘土上Spudcan基础的3D大变形有限元分析

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Spudcan foundations are used widely to provide support at the seabed for independent legged jack-up rigs.In order to explore the continuous loadpenetration profile and mobilised soil failure patterns,simulating deep penetration of spudcans during preloading a jack-up rig,large deformation finite element (LDFE) analyses are essential.This paper investigates continuous penetration of circular spudcan foundations in single and two-layer clay deposits.An LDFE approach termed Coupled Eulerian-Lagrangian (CEL) approach in commercial package Abaqus was used.For implementing the CEL approach,a 3D model was created,in which only one fourth of the whole model was considered accounting for the geometric symmetry.Parametric LDFE analyses were performed encompassing the range of practical interest.The results from 3D CEL approach were compared with the previously published results from axisymmetric LDFE analyses using the RITSS (remeshing and interpolation technique with small strain) approach.The good agreement obtained shows that the CEL approach is capable in analysing complicated large deformation problems.
机译：Spudcan基础广泛用于为独立的有腿自升式钻井平台在海底提供支撑。为了探究连续的荷载渗透曲线和动员的土体破坏模式，模拟了自升式钻井平台在预加载过程中深层渗透，大变形有限元（LDFE）分析是必不可少的。本文研究了圆形双桩基础在单层和两层粘土矿床中的连续渗透。在商业包装Abaqus中使用了称为耦合欧拉-拉格朗日耦合（CEL）方法的LDFE方法。创建了一个3D模型，其中仅考虑了整个模型的四分之一的几何对称性，并进行了涉及实际应用范围的参数LDFE分析。将3D CEL方法的结果与先前发表的轴对称结果进行了比较LDFE使用RITSS（小应变的插值和插值技术）方法进行分析。获得的良好协议表明，CEL方法能够分析复杂的大变形问题。

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