• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Civil Engineering, Architecture and Building Materials >Numerical analysis of tunneling influence on settlement of existing pile foundations based on orthogonal design
【24h】

Numerical analysis of tunneling influence on settlement of existing pile foundations based on orthogonal design

机译：基于正交设计的现有桩基础沉降的隧道影响数值分析

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Because of the Limited urban space and the development of transport, underground space development, especially the metro construction, is vigorously developed in many cities. Subway passing through the existing building inevitably may cause the settlement and deformation of the buildings and their foundations. Therefore, research on the influence of tunneling on existing buildings has important significance. In order to study the influence of tunneling on settlement of existing pile foundations, soil elastic modulus, cohesion, friction angle, tunneling sizes, distance between tunnel opening boundaries and existing pile foundation etc. are discussed as analysis factors in this paper. The calculation schemes are designed based on orthogonal design, and then the influence of tunneling on existing buildings is researched according to the numerical calculation model which is established by the finite element software. Finally, the sensitivity of pile foundation settlement to various factors is analyzed according to the results of simulation analysis. We can draw the conclusions: the influence of tunneling on settlement of existing pile foundation is positively correlated with tunneling sizes, and is negatively correlated with soil parameters and distance between tunnel opening boundaries and existing pile foundations; The settlement of pile foundations can be effectively controlled by application of composite anchor isolation piles around the existing buildings piles, but with the increase of soil parameters and distance between tunnel opening boundaries and existing pile foundations, the strengthening effects are decreased; soil elastic modulus and excavation sizes are the key impact-factors of pile settlement within the distance of 5m between tunneling boundaries and existing pile foundations, which have extremely remarkable effect on the subsidence of pile foundations.
机译：由于城市空间有限和运输的发展，地下空间发展，特别是地铁建设，在许多城市大力发展。通过现有建筑的地铁不可避免地可能导致建筑物及其基础的定居点和变形。因此，研究隧道对现有建筑物的影响具有重要意义。为了研究隧道对现有桩基沉降的影响，土壤弹性模量，内聚力，摩擦角，隧道开口边界和现有桩基等的距离被讨论为本文的分析因素。计算方案基于正交设计设计，然后根据有限元软件建立的数值计算模型研究了隧道对现有建筑物的影响。最后，根据模拟分析结果分析了桩基结算对各种因素的敏感性。我们可以得出结论：隧道对现有桩基沉降的影响与隧道尺寸呈正相关，与土壤参数和隧道开放边界与现有桩基之间的距离呈负相关;通过在现有建筑物桩周围的复合锚隔离桩的应用，可以有效地控制桩基的沉降，但随着隧道开放边界和现有桩基之间的土壤参数和距离的增加，增强效果减少;土壤弹性模量和挖掘尺寸是隧道边界与现有桩基与现有桩基之间5米内的桩沉降的关键影响因素，对桩基沉降有极大的影响。

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