桩承地基处理大面积软基的现场测试及分析

强小俊; 张长生; 刘峰

doi:10.13204/j.gyjz201204020

桩承地基处理大面积软基的现场测试及分析

doi: 10.13204/j.gyjz201204020

1.
1. 中国铁道科学研究院深圳研究设计院广东深圳 518034;
2.
2. 北京工业大学北京 100124

详细信息

作者简介:
强小俊，男，1981年出生，博士，助理研究员。

中图分类号: TU473.1
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- 文章访问数: 61
- HTML全文浏览量: 3
- PDF下载量: 115
- 被引次数: 0
出版历程
- 收稿日期: 2011-06-25
- 刊出日期: 2012-04-20

FIELD TEST AND ANALYSIS OF REINFORCED PILE- SUPPORTED FOUNDATION IN LARGE AREA OF SOFT GROUND

1.
1. Shenzhen Research and Design Institute of China Academy of Railway Sciences,Shenzhen 518034,China;
2.
2. Beijing University of Technology,Beijing 100124,China

摘要

摘要: 为了解桩承地基的工作机理,对深圳机场停机坪大面积桩承地基处理区域的桩顶沉降、桩间土沉降以及孔隙水压力进行现场测试,并对测试结果进行详细的分析和比较。结果表明:桩承地基能够有效地减小地基总沉降和桩土沉降差,桩土沉降差在19～25 mm;路堤填土中存在明显的土拱效应,土拱高度集中在0.83～1.04倍桩净间距,平均为0.94的桩净间距;桩土沉降差与土拱效应发挥程度密切相关,桩土沉降差是产生土拱效应的前提条件。
- 桩承地基 /
- 现场测试 /
- 土拱效应 /
- 地基处理
Abstract: In order to investigate the working mechanism of reinforced pile-supported foundation,field tests in Shenzhen Airport Apron had been performed. The test results of settlement and pore water pressure were analyzed and compared in detail. The results showed that the reinforced pile-supported foundation could reduce the total settlements and differential settlements,the differential settlements were 19 ～ 25 mm. The soil arching effect existed within the embankment. The height of soil arching was about 0. 83 ～ 1. 04 times the pile clear spacing. The average height of soil aching was about 0. 94 times the pile clear spacing. The differential settlement was closely related to soil arching effect,and the differential settlement was the prerequisite to produce soil arching.
- reinforced pile-supported foundation /
- field test /
- soil arching effect /
- foundation treatment

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参考文献(6)

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[6] 中国铁道科学研究院深圳研究设计院. 深圳机场南停机坪扩建工程地基处理施工图设计[R]. 深圳:中国铁道科学研究院深圳研究设计院，2007.

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