土工基础

›› 2013, Vol. 27 ›› Issue (1): 41-42.

• 工程实录 • 上一篇    下一篇

浅议桩基承载力计算公式

章晓余 1，尚继发 2   

  1. （1.中煤科工集团南京设计研究院，南京 210031;2.广东省电力设计研究院，广州 510663）
  • 收稿日期:2012-07-03 出版日期:2013-02-28 发布日期:2013-03-05
  • 作者简介:章晓余(1973-)，男，安徽太湖人，高级工程师，注册岩土工程师，大学本科，研究方向为岩土工程勘察、设计。

Discussions on the Pile Axial Capacity Estimation Formulas

ZHANG Xiaoyu1， SHANG Jifa2   

  1. （1.Nanjing Design & Research Institute, China Coal Technology & Engineering Group, Nanjing, 210031；
    2.Guandong Electric Power Design Institute, Guangzhou 510663）
  • Received:2012-07-03 Online:2013-02-28 Published:2013-03-05

摘要： 通过对试验桩基的受力传递机理分析，认为单桩承载力特征值计算公式中桩端阻力、侧摩阻力特征值分别取其极限值除以安全系数2不符合实际受力情况，应分别采用不同的安全系数计算其特征值，但目前对其研究还不够成熟，桩基承载力按照极限值除以综合安全系数计算更为合适。

关键词: 侧摩阻力, 桩端阻力, 标准值, 特征值, 经验值

Abstract: The load transfer mechanism in an axial loaded pile is studied through the static loading tests on instrumented piles. In the allowable axial capacity estimation formula, the allowable capacity is obtained by using the limiting values of shaft and tip resistance divided by an uniform factor of safety of 2. This approach is not consistent with the actual load transfer mechanism. The ideal pile allowable capacity should be obtained by the limiting values divided by different safety factors. However, at current stage, it is appropriate to use one comprehensive safety factor to obtain the allowable pile capacity since the load transfer mechanism between the pile shaft and the tip are not clear.

Key words: Pile Shaft Resistance, Pile Tip Resistance, Standard Capacity, Allowable Axial Capacity, Empirical Capacity Formulas