柔性基础下复合地基沉降规律研究

吕文志; 李春智; 俞建霖; 刘超

doi:10.13204/j.gyjz201009016

柔性基础下复合地基沉降规律研究

doi: 10.13204/j.gyjz201009016

1.
1. 浙江大学软弱土与环境土工教育部重点实验室,杭州310058;
2.
2. 长江科学院水利部岩土力学与工程重点实验室,武汉430010;
3.
3. 山东滨州市建筑设计研究院设计一所,山东滨州256600

基金项目:

国家自然科学基金项目(50708093);东南大学混凝土及预应力混凝土结构教育部重点实验室项目(200608)

详细信息

作者简介:
吕文志，男，1975出生，博士，高级工程师。E－mail:lwz13871282176@163.com

中图分类号: TU433
计量
- 文章访问数: 115
- HTML全文浏览量: 7
- PDF下载量: 55
- 被引次数: 2
出版历程
- 收稿日期: 2010-04-18
- 刊出日期: 2010-09-20

STUDY ON THE SETTLEMENT LAW OF THE COMPOSITE GROUND UNDER A FLEXIBLE FOUNDATION

1.
1. Key Laboratory of Soft Soils and Geoenvironmental Engineering,Ministry of Education,Zhejiang University,Hangzhou 310058,China;
2.
2. Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China;
3.
3. Binzhou Academy of Building Research and Design,Binzhou 256600,China

摘要

摘要: 柔性基础下复合地基已广泛应用于公路和铁路路堤、水利土石坝、尾矿坝及各类堆场等工程领域，但其理论尚落后于工程实践。结合解析法研究现状分析，对所推导的柔性基础下复合地基沉降的简化解析解给予介绍，并通过工程实例对该解析解的可靠性进行验证。然后，基于该解析解和标准算例，对系统8个影响因素与等沉面高度、中性点位置、向上和向下的刺入变形及桩和土的沉降等内在联系作了分析。结果表明:系统8个因素对各沉降特性指标都有不程度的影响，必须重视对系统上、下部共同作用的深入研究。
- 柔性基础下复合地基 /
- 解析解 /
- 沉降特性 /
- 影响因素 /
- 共同作用
Abstract: The theory lags far behind the engineering practice,though the composite ground under flexible foundation has been widely applied to several engineering fields,such as embankments of highway and railway,dams,tailing dams,stack yards.Combined with the present situation analysis of analytical method,the settlement characteristics of the composite ground under flexible foundation was summarized firstly.Then,a simplified analytical solution was presented briefly.The fellowing verification by an engineering case indicates that the solution can more accurately reflect the working behavior of the composite ground under a flexible foundation.And then,on a basis of a standard example,the relationships among eight influence factors and the height of the equal settlement plane,the depth of the neutral point,the stab deformation,the settlement of pile and soil etc.were studied through the solution.It can be concluded that the factors of the four components of the system can all affect the settlement characteristics more or less.It is necessary to pay more attention to the composite ground under flexible foundation based on super-sub structure interaction.
- composite ground under flexible foundation /
- analytical solution /
- settlement characteristics /
- influence factors /
- interaction

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参考文献(15)

[2] Alamgir M，Mjura N，Poorooshasb H B.Deformation Analysis ofSoft Ground Reinforced by Columnar Inclusions[J].Computersand Geotechnics，1996(4):267-290.

龚晓南.广义复合地基理论及工程应用[J].岩土工程学报，2007，29(1): 1-13.

[3] 杨涛.路堤荷载下柔性悬桩复合地基的沉降分析[J].岩土工程学报，2000，22(6): 741-743.

[4] 李海芳，温晓贵，龚晓南.路堤荷载下复合地基加固区压缩量的解析算法[J].土木工程学报，2005，38(3): 77-80.

[5] 刘吉福.路堤下复合地基桩、土应力比分析[J].岩石力学与工程学报，2003，22(4):674-677.

[6] 陈仁朋，许峰，陈云敏，等.软土地基上刚性桩－路堤共同作用分析[J].中国公路学报，2005，18(3): 7-13.

[7] Chen R P，Chen Y M，Xu Z Z.Interaction of Rigid Pile-Supported Embankment on Soft Soil[G].Advances in EarthStructures: Rearch to Practice.Geotechnical Special PublicationNo.153，ASCE，2006: 231-238.

[8] 王春美.柔性桩复合地基加固区的压缩量计算[J].扬州大学学报:自然科学版，2007，10(4):66-70.

[9] Hiroshi Miki1，Mitsuo Nozu.Design and Numerical Analysis ofRoad Embankment with Low Improvement Ratio Deep MixingMethod[J].ASCE Geotechnical Engineering for TransportationProjects，2004: 1395-1402.

[10] Raithel M，Kirchner A，Schade C.Foundation of Constructions onVery Soft Soils with Geotexile Encased Columns:State of the Art[C]∥ ASCE Innovations in Grouting and Soil Improvement.2005.

[11] 郑伟.柔性基础下复合地基荷载传递机理及变形特性研究[D].杭州: 浙江大学，2006.

[12] 吕文志，俞建霖，郑伟，等.基于上、下部共同作用的柔性基础下复合地基解析解的研究[J].工业建筑，2009，39 (4):77 －83.

[13] 刘超.柔性基础下复合地基的工作性状分析[D].杭州: 浙江大学，2007.

[14] Terzaghi K，Peck R B.Soil Mechanics in Engineering Practice[M].2nd Edn.New York: Wiley，1967.

[15] 史佩栋.实用桩基工程手册[M].北京:中国建筑工业出版社，1999.

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