扩底短桩承载力时间效应分析

赵楠

扩底短桩承载力时间效应分析 English Version

赵楠

郑州大学土木建筑工程学院,化学工业部郑州基础工程研究检测中心,河南郑州 450002

详细信息

作者简介:
赵楠 (1957 – ) ,男,河南孟津人,硕士,高级工程师,主要从事地基基础质量检测、建筑结构检测等方面的工作。

中图分类号: TU47
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出版历程
- 收稿日期: 2011-08-27
- 发布日期: 2011-12-06

Time effect analysis of bearing capacity of belled short pile

ZHAO Nan

Civil Engineering School, Zhengzhou University, Research and Inspection Centre of Foundation Engineering, Ministry of Chemistry, Zhengzhou 450002, China

摘要

摘要: 通过对同一场地、相同桩型、不同桩体时隔 40 天的静载试验 <> Q – <> s 曲线的对比分析,论述了人工挖孔类的混凝土桩的承载力不会随着时间的推移而有所提高,即承载力不存在时间效应问题。通过对同一扩底短桩的两次静载试验的承载力比较,认为其承载力的提高,完全是由于桩侧和桩端土体的压实重塑导致土体强度的提高所引起的。同一桩的二次静载试验存在着时间效应,与第一次试验的时间间隔越长,桩的承载力会有不同程度的提高。
- 扩底短桩 /
- 承载力 /
- 时间效应 /
- 双层地基
Abstract: Field tests are carried out on a group of piles in the same site with the same type. Static loading <>Q – <> s curves obtained from piles before and after an interval of 40 days are compared and analyzed. It is found that the bearing capacity of reinforced concrete piles with the manual digging holes does not increase with the time, i.e., no time effect exists. Twice static loading tests are carried out on the same belled short pile. It is found that the bearing capacity increases because of the compaction of soil on the lateral surface and the bottom of the pile. There is time effect on the same pile before and after certain time interval. The longer the interval is, the more the bearing capacity increases.
- belled short pile /
- bearing capacity /
- time effect /
- bi-layer soil

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参考文献(7)

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扩底短桩承载力时间效应分析 English Version

作者简介: 赵 楠 (1957 – ) ,男,河南孟津人,硕士,高级工程师,主要从事地基基础质量检测、建筑结构检测等方面的工作。

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Time effect analysis of bearing capacity of belled short pile

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作者简介:
赵楠 (1957 – ) ,男,河南孟津人,硕士,高级工程师,主要从事地基基础质量检测、建筑结构检测等方面的工作。