土工基础

›› 2013, Vol. 27 ›› Issue (2): 50-53.

• 工程实录 • 上一篇    下一篇

双排支护桩排距与锚固深度研究

 廖 萍1，杨 雷2   

  1. (1.江苏泛亚联合建筑设计有限公司，江苏无锡 214015；2.青海华鑫水电开发有限公司，西宁 810000）
  • 收稿日期:2012-07-24 出版日期:2013-04-20 发布日期:2013-04-26
  • 作者简介:廖萍(1979-),女,一级注册结构师，研究方向为建筑结构设计和基坑支护与稳定性分析。

Studies on the Spacing and Embedment Depth of Double Rowed  Soldier Piles in the Deep Excavation Support

LIAO Ping1，YANG Lei2   

  1. (1.Jiangsu Pan Asia Joint Architectural Design Co., Ltd., Wuxi, Jiangsu   214015;2.Qinghai Huaxin Hydropower Development Co Ltd., Xining, 810000)
  • Received:2012-07-24 Online:2013-04-20 Published:2013-04-26

摘要： 在不适合采用锚杆支护的情况下，双排支护桩在深基坑支护应用领域前景十分广阔。主要分析了双排桩的基本特点，从力学的角度提出了双排桩的理论支护排距和锚固深度。结果表明：当前后桩最大剪力相等时，两桩间距为最佳排距；运用极限平衡分析方法以桩底为支点计算桩的理论锚固深度，并通过现场实例进行了验证。

关键词: 双排支护桩, 深基坑, 主动土压力, 排距, 锚固深度

Abstract: Doublerowed soldier piles have a wide application potential in providing support for the deep excavations when the adjacent conditions do not permit the use of ground anchors. The paper introduces the basic characteristics of the doublerowed soldier piles. The optimum spacing and the minimum embedment depth are analyzed. The results indicate that the optimum spacing is at the condition when the shear forces within the front pile and the rear pile are approximately equivalent. The minimum embedment depth of the doublerowed soldier piles is derived from the limit equilibrium analysis and is verified by a case history.

Key words: DoubleRowed Soldier, Deep Excavations, Active Earth Pressures, Pile Spacing, Embedment Depth