›› 2011, Vol. 25 ›› Issue (5): 20-22.

• 工程实录 • 上一篇    下一篇

锚杆扩孔技术应用于某高层建筑基础加固

陆观宏, 曾庆军, 黄 敏, 肖 芳   

  1. (广东交通职业技术学院,广州 510650) 
  • 收稿日期:2011-08-11 出版日期:2011-10-20 发布日期:2011-11-23
  • 作者简介:陆观宏,男,1970年生,广东人,在读博士研究生,副教授,高级工程师,国家注册土木工程师(岩土)。
  • 基金资助:

    项目基金:本文源自广东省交-08-11通厅科研项目:200709

Applications of Soil Anchor Borehole Enlargement Techniques in the Foundation Rehabilitation of a High-raised Building

LU  Guan  hong, ZENG  Qing  jun, HUANG  Min, XIAO  Fang   

  • Received:2011-08-11 Online:2011-10-20 Published:2011-11-23

摘要: 通过某高层建筑基础加固实例,介绍一种先在建筑物筏板钻小直径孔(Φ150),然后利用锚杆扩孔技术在筏板下施工较大直径(Φ400)桩基础的建筑基础加固方法,该加固方法对原基础的损伤小,成桩直径可控,单桩承载力高,加固速度快,工程实例表明,加固效果理想。

Abstract: In a case study of the foundation rehabilitation of a high\|raised building, small diameter (Φ=150 mm) boreholes were drilled through the mat foundation. These boreholes were expanded into large diameter (Φ=400 mm) cast\|in\|situ concrete piles by utilizing the soil anchor borehole enlargement techniques. This method has the advantages of minimizing the existing foundation damage; controllable pile diameter; reliable single pile capacity; and fast construction. The case study suggests this method has good foundation improvement results.