›› 2014, Vol. 28 ›› Issue (2): 102-104.

• 工程实录 • 上一篇    下一篇

浅析天津地区超长钻孔灌注桩承载性状

韩 立1,孙立华2   

  1. (1.天津华兴勘察设计有限公司,天津 300241;2.天津市地质工程勘察院,天津 300191)
  • 收稿日期:2013-11-26 出版日期:2014-04-21 发布日期:2014-04-25
  • 作者简介:韩立(1980-),男,工程师,研究方向为岩土工程勘察与设计。

Review of the Extra Long Cast In Place Concrete Piles in Tianjin Area

HAN Li1, SUN Lihua2   

  1. (1.Tianjin Huaxin Investigation and Design Co., Ltd., Tianjin 300241;
    2.Tianjin Geological and Engineering Investigation Institute, Co., Tianjin 300191)
  • Received:2013-11-26 Online:2014-04-21 Published:2014-04-25

摘要: 通过对超长桩载荷试验的研究,分析了超长桩的承载性状与普通钻孔桩之间的区别,并总结了超长桩的承载特性及荷载传递机理:①桩长是有限度的;②桩侧摩阻力和桩端阻力发挥是不同步的;③当达到设计荷载或允许沉降时,桩侧阻力还未发挥完全;④超长桩桩端阻力所占比例极小;⑤桩侧阻力呈现出完整的抛物线形态;⑥沉降曲线为缓变型,没有明显的拐点。

关键词: 超长桩, 承载性状, 传递机理

Abstract: The static loading tests are performed on the extralong cast in place concrete piles. The performance differences between the extralong piles and the conventional piles are evaluated. The characteristics and the loading transfer mechanism of the extralong piles are summarized in the paper.

Key words: Extra Long Piles, Bearing Capacity, Loading Transfer