土工基础

›› 2016, Vol. 30 ›› Issue (1): 5-8.

• 工程实录 • 上一篇    下一篇

钻孔灌注咬合桩和锚索在某基坑工程中的应用与探讨

褚 为1，雷美清2   

  1. （1.武汉中力岩土工程有限公司，武汉 430071； 2.中科院武汉岩土力学研究所，武汉 430071）
  • 收稿日期:2015-01-20 出版日期:2016-02-20 发布日期:2016-03-02
  • 作者简介:褚 为（1986-），男，硕士，研究方向为岩土工程勘察，基坑工程设计。

Application of the Cast-in-Place Concrete Secant Pile and Ground Anchors in a Deep Excavation

CHU Wei1，  LEI Meiqing2   

  1. （1.Wuhan Zhongli Geotechnical Engineering Co., Ltd., Wuhan 430071;
    2.Wuhan Institute of Rock and Soil Mechanics, Wuhan, 430071）
  • Received:2015-01-20 Online:2016-02-20 Published:2016-03-02

摘要： 某基坑工程开挖深度15.0 m，地下室占地面积4260 m2，大体呈正方形。场地至汉江干流水平距离不足300 m，承压水水头位于地面下3.0 m；基坑支护需实现挡土、止水、减压防止突涌等功效。采用钻孔灌注咬合桩+锚索+深井降水的综合支护方案，在江汉平原深厚卵砾石层地区得到了成功应用，有推广应用的价值。

关键词: 钻孔灌注咬合桩, 锚索, 基坑工程

Abstract: The paper presents a successful project utilizing jet grouting secant piles with ground anchors and dewatering well for deep excavation in Jianghan Plain alluvial soil. The project is located in the District of Fancheng, Xiangyang City and it involves constructing 3floor underground basement of 4260 square meters with an excavation depth of 15 meters. The subsurface consists of mainly Jianghan Plain alluvial overburden with exposed gravel layer within the limits of excavation. The project location is only 300 meter away from Hanjiang River and the ground water table is about 3.0 meter below the existing ground. The support of excavation requires to consider retaining soils, seepage control, bottom heave or boiling, and etc.

Key words: Cast-In-Place Concrete Secant Piles, Ground Anchors, Deep Excavations