...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of geotechnical engineering >Large deformation FE analysis of large diameter spudcan penetration into two-layer of uniform clays
【24h】

Large deformation FE analysis of large diameter spudcan penetration into two-layer of uniform clays

机译：大直径钉桩渗入两层均质黏土的大变形有限元分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Jack-up rigs are a popular offshore structure in medium water depth due to its mobility. Spudcan foundations are normally used to support each individual jack-up leg. When the seabed soils display a strong soil layer overlaying a soft soil layer, during foundation penetration, punch-through failure may occur. In this study, large deformation finite element (LDFE) analyses have been conducted to simulate spudcan continuous penetration into strong over soft clay soils. The numerical simulation was carried out using Remeshing and Interpolating Technique with Small Strain (RITSS) model. The LDFE/ RITSS results were compared with existing data. The effects of the relative thickness of the top strong clay, the strength ratio of clay layers and the size of spudcan foundation were investigated. The soil flow mechanisms at various penetration depths were also discussed. It was found that the spudcan punch-through failure potentials increase with increasing top layer thickness. Moreover, it was also noticeable that, with a constant relative top layer thickness, the punch-through failure potential increases with increasing spudcan diameter.
机译：自升式钻机由于具有机动性，因此在中等水深中是一种受欢迎的海上结构。 Spudcan基础通常用于支撑每个独立的自升式支腿。当海底土壤显示出覆盖软土层的强土层时，在地基渗透过程中可能会发生穿通破坏。在这项研究中，已经进行了大变形有限元（LDFE）分析，以模拟桩墩连续渗透到坚硬的软粘土上。数值模拟是使用带有小应变的网格划分和内插技术（RITSS）模型进行的。 LDFE / RITSS结果与现有数据进行了比较。研究了顶层强黏土的相对厚度，黏土层的强度比和桩脚基础尺寸的影响。还讨论了不同渗透深度下的土壤流动机理。已经发现，随着顶层厚度的增加，桩钉穿通失败的可能性增加。而且，还值得注意的是，在顶层的相对厚度恒定的情况下，击穿失败的可能性随着桩头直径的增加而增加。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号