土工基础

›› 2015, Vol. 29 ›› Issue (4): 9-12.

• 工程实录 • 上一篇    下一篇

柔性墙结合预应力锚杆在深基坑中的应用

张昌桔，陈 伟，牟大鹏   

  1. （上海岩土工程勘察设计研究院有限公司浙江分院，杭州 310020)
  • 收稿日期:2015-05-07 出版日期:2015-08-20 发布日期:2015-11-06
  • 作者简介:张昌桔（1987-），男，助理工程师，研究方向为岩土工程。

Deep Excavation Supported by the Flexible Wall and the Pre-stressed Ground Anchors

ZHANG Changju, CHEN Wei, MOU Dapeng   

  1. (Shanghai Geotechnical Investigation, Design and Research Institute Co., Ltd., Zhejiang, Hangzhou 310020)
  • Received:2015-05-07 Online:2015-08-20 Published:2015-11-06

摘要： 某粉砂土深基坑采用柔性墙结合预应力锚杆围护体系。分别计算了柔性墙作为止水帷幕的抗渗流稳定性以及作为挡土结构的强度，并对锚杆的作用以及基坑的降水进行了分析，最后根据现场监测数据，对围护体系的合理性进行了验证。通过围护方案对比，分析了柔性墙结合预应力锚杆围护体系在施工工期和成本上的优越性。

关键词: 柔性墙, 预应力锚杆, 深基坑, 止水, 挡土结构

Abstract: This paper presents a case history of deep excavation support in silty sand soils by using a flexible retaining wall with prestressed ground anchors. The seepage stability and retaining wall strength aspects of the flexible wall are examined and the role of the ground anchor in the dewatering is also discussed. The design of flexible wall and the ground anchors are also verified by the project monitored data. This project also demonstrates the advantages of the cost effectiveness and the construction schedule of the flexible wall with prestressed ground anchors.

Key words: Flexible Retaining Wall, Pre-stressed Ground Anchors, Deep Excavation, Groundwater Cut-off, Retaining Structures