• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Geotechnical Engineering in the Information Technology Age >Two and Three-Dimensional Modeling of DM Columns under Embankments
【24h】

Two and Three-Dimensional Modeling of DM Columns under Embankments

机译：路堤下DM柱的二维和三维建模

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

Deep mixed (DM) columns have been commonly used to increase bearing capacity of soft soil and reduce total and differential settlements of embankments. In most analyses (especially numerical analyses) of embankments over DM columns, two-dimensional models are commonly used for simplicity. However, it is not clear how well the two-dimensional (2D) models represent the behavior of embankments over DM columns that are typically installed in a three-dimensional (3D) pattern, such as a square or triangular pattern. In this study, 2D and 3D numerical analyses were conducted to show the comparisons of their results including maximum settlements and vertical stresses. In the 2D analysis, individual DM columns and the soil between these columns are converted to several DM walls parallel to the centerline of the embankment. The DM walls are assumed to have equivalent moduli or strength averaged from the individual DM columns and the soil between these columns based on their areas and moduli or strengths. The comparisons show that the 2D model calculates slightly (conservatively) larger maximum settlements at the base of the embankment than the 3D model if the DM walls/columns are within the elastic limit. However, the 2D and 3D models produce very different results of vertical stresses on the top of DM walls/columns.
机译：深层混合（DM）柱通常用于增加软土的承载力并减少路堤的全部沉降和差异沉降。在DM柱上的路堤的大多数分析（尤其是数值分析）中，为简化起见，通常使用二维模型。但是，尚不清楚二维（2D）模型在一般以三维（3D）模式（例如正方形或三角形模式）安装的DM柱上表示路堤的性能如何。在这项研究中，进行了2D和3D数值分析，以显示其结果的比较，包括最大沉降和垂直应力。在2D分析中，将单个DM柱和这些柱之间的土壤转换为平行于路堤中心线的几个DM墙。假设DM墙具有等效的模量或强度，这些值是根据各个DM柱以及这些柱之间的土壤（基于其面积和模量或强度）取平均值得到的。比较结果表明，如果DM墙/柱在弹性极限内，则2D模型计算的堤防基部最大沉降量（3D模型）略大于（保守）3D模型。但是，2D和3D模型在DM墙/立柱的顶部产生垂直应力的结果截然不同。

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