降水预压软基处理技术中孔隙水压力效应研究

吉随旺; 张倬元

降水预压软基处理技术中孔隙水压力效应研究

吉随旺¹,
张倬元²

1.
四川省交通厅公路规划勘察设计研究院,成都610042;
2.
成都理工学院工程地质研究所,成都610059

详细信息

作者简介:
吉随旺(1961-), 男, 副教授, 现为博士研究生, 研究方向:软基处理.Email:jisuiwang@263.net

中图分类号: TU463
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出版历程
- 收稿日期: 2000-02-23
- 修回日期: 2000-06-03
- 刊出日期: 2001-12-22

STUDY ON THE EFFECT OF PORE WATER-PRESSURE IN TECHNOLOGY OF DEWATERING SOFT SOIL FOUNDATION TREATMENT

JI Suiwang¹,
ZHANG Zhuoyuan²

1.
Institute of Highway Planning Survey Design, Comunications Department of Sichuan Province, Chengdu 610042;
2.
Institute of Engineering Geology, Chengdu University of Technology, Chengdu 610059

摘要

摘要: 降水预压是通过降低地下水位而加固软土地基的一种软基处理技术。这项处理技术的中孔压变化与堆载预压的孔压变化有所不同, 它是在通过降水减小静水压力增大有效正应力, 从而使土体固结沉降。通过上海浦东某工程降水预压试验的孔压测试, 本文分析了降水预压加固软土地基原理及孔隙水压力效应。
- 降水预压 /
- 孔隙水压力 /
- 效应 /
- 监测
Abstract: Dewatering is a new technology in soft soil foundation treatment. By dewatering, hydrostatic pressure decreases and effective normal stress correspondingly increases. Then the soft soil is consolidated and subded . In this paper, by analyzing pore-water pressure monitoring data of the dewatering and preloading test on a project in Pudong , the mechanism and pore water effect of dewatering foundation reinforcement are briefly discussed.
- Detwering reinforcement /
- Pore water pressure effect /
- Monitoring /

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参考文献(1)

[1] 　叶书麟等.地基处理与技术
[M].北京:中国建筑出版社, 1994, 220.Ye Shulin.Ground treatment and underpinning technology.Beijing:China Construction Publication 1994, 220.

[2] 　缪俊发等.抽水与注水引起的土层变形特征及应力应变本构规律
[J].军工勘察, 1994, (3):37～42.Miu Junfa.The soil deformations and stress-strain relationship bypumping and injecting water test.Site Investigation and SurveyingPractice, 1994, (4):37～42.

[3] 　胡展飞.降水预压改良坑底饱和软土的理论和实践
[J].岩土工程学报, 1998, (3):27～30.Hu Zhanfei.Research on strengthened saturated soft soils by dewateringand its engineering practice.Chinese Journal of Geotechnical Engineering, 1998, (3):27～30.

[4] 　高志义.真空预压法机理
[J].岩土工程学报, 1989, (4):45～55.Gao Zhiyi.Analysis on mechanics of vacuum preloading method.Chinese Journal of Geotechnical Engineering, 1989, (4):45～55.

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