土工基础

›› 2011, Vol. 25 ›› Issue (5): 14-16.

• 工程实录 • 上一篇    下一篇

三轴深搅桩在某深基坑围护中的施工组织设计

王晓梅1， 周圆媛2   

  1. （1．江苏省地质调查研究院，南京 210018； 2．武汉大学，武汉 430072）
  • 收稿日期:2011-08-25 出版日期:2011-10-20 发布日期:2011-11-23
  • 作者简介:王晓梅，女，1968年生，高级工程师，研究领域为水工环境。

Three-Axis Soil Mixing Wall Installation Specifications in a Deep Excavation Supporting System

WANG  Xiao  mei1， ZHOU  Yuan  yuan2   

  1. （1. Geological Survey of Jiangsu Province，Nanjing 210018；
    2. Wuhan University，Wuhan 430072, China）
  • Received:2011-08-25 Online:2011-10-20 Published:2011-11-23

摘要： 三轴深搅桩是一种重要的止水和加固工程桩，可改善土体的透水、剪切和压缩特性。其施工组织设计是工程成败的关键。结合某深基坑围护工程，详细介绍了开挖沟槽、搅拌桩机和桩孔定位、搅拌注浆、槽段接头处理及施工质量检验及处理等施工过程和工艺。最后还归纳了三轴深搅桩施工过程中的优缺点，供工程参考。

关键词: 施工组织设计, 三轴深搅桩, SMW工法, 止水帷幕

Abstract: The soil mixing wall (SWM) formed by three\|axis rotary shafts has an important application in the slurry wall and ground strengthening constructions. The soilcrete formed by the SWM reduces the seepage and the compressibility of the soil mass significantly. It also increases the shear strength. The installation specification preparation is the key issue in a successful SWM construction. This paper presents the detail aspects of the SWM construction sequences and procedures in a typical supporting system for a deep excavation. These sequences and procedures includes: trench excavation; equipment positioning and column location determining; soil mixing and grouting, soilcrete joint treatment and construction quality assurance etc. Both advantages and disadvantages in applying the three\|axis formed SWM are also summarized in the paper.

Key words: installation specification preparation, three\, axis formed deep mixing column, soil Mixing Wall, waterproof curtain