上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (01): 84-88.

• 建筑科学 • 上一篇    下一篇

人工挖孔桩施工对紧邻基坑围护结构的影响

金国龙，王勇，顾开云   

  1. (中船第九设计研究院工程有限公司， 上海 200063)
  • 出版日期:2012-01-30 发布日期:2012-01-30

Influence of Constructing Hand-Dug Piles Closing to Retaining Wall

 JIN  Guo-Long, WANG  Yong, GU  Kai-Yun   

  1. (China Shipbuilding NDRI Engineering Co. Ltd., Shanghai 200063, China)
  • Online:2012-01-30 Published:2012-01-30

摘要： 以某工程为研究背景，通过二维和三维数值模拟，分析了人工挖孔桩的施工过程对紧邻基坑围护结构的影响，并根据计算结果对其进行专项设计.结果表明：人工挖孔桩施工过程中的空间拱效应明显；在直径3.0 m的挖孔桩距离围护结构约5.0 m的情况下，仅需采取简单的设计措施，即可保证围护结构的安全性.

关键词: 深基坑, 人工挖孔桩, 施工, 数值分析

Abstract: Based on an engineering case, 2D and 3D finiteelement tools were employed to analyze the mutual impact of constructing hand-dug piles close to retaining wall. Combined with the analysis data, some measures were implemented. The results show that the hand-dug piles have obvious space arch effect. When the net distance between 3 meter diameter handdug piles and retaining wall is 5 meters, only simple design measures are needed to ensure the safety of the foundation pit.
 

Key words: foundation pit, hand-dug pile, construction, numerical analysis

中图分类号: