Effects of time-effect of pile’s bearing capacity on pile-soil interaction and on settlement of pile-raft foundation

ZHENG gang; REN Yan-hua

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Effects of time-effect of pile’s bearing capacity on pile-soil interaction and on settlement of pile-raft foundation

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- Effects of time-effect of pile’s bearing capacity on pile-soil interaction and on settlement of pile-raft foundation
- Vol. 24, Issue 1, (2003)
- 作者机构：
  
  1. ．天津大学土木工程系,天津,300072
  2. 天津市勘察院,天津,300191
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：27 August 2014，
  
  Published：2003
- 稿件说明：
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ZHENG gang, REN Yan-hua. Effects of time-effect of pile’s bearing capacity on pile-soil interaction and on settlement of pile-raft foundation[J]. 2003, 24(1).
DOI：

ZHENG gang, REN Yan-hua. Effects of time-effect of pile’s bearing capacity on pile-soil interaction and on settlement of pile-raft foundation[J]. 2003, 24(1). DOI：

摘要

对软土中两根47 m长灌注桩分别在成桩28 d和1 750 d后进行了承载力试验，其极限承载力提高幅度达到30％左右。分析了单桩承载力随时间提高(称为时效)的机理，提出了单桩承载力时效对桩筏基础桩土相互作用影响的分析方法，并结合工程实例进行了分析。

Abstract

Pile loading tests of two bored piles of length 47m in soft soil are carried out for 28 days and 1 750 days after they are constructed. In-situ test shows that the ultimate bearing capacity of these two single piles increased about 30 %. The mechanism of time-effect of bearing capacity of pile is analyzed; and method of analyzing the effects of the time-effect of a pile’s bearing capacity on pile-soil interaction of pile-raft foundation is discussed with an engineering example.

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