真空排水预压下土体变形的应力路径分析

李丽慧; 王清; 王剑平; 王年香

真空排水预压下土体变形的应力路径分析

1.
长春科技大学环境与建设工程学院,长春130026;
2.
南京水利科学研究院,南京210024

基金项目:

国家自然科学基金资助(编号;49972089)资助

详细信息

作者简介:
李丽慧(1976-),女,汉,硕士,岩土工程专业.Email:cwgd@public.cc.jl.cn

中图分类号: TU435
计量
- 文章访问数: 3511
- HTML全文浏览量: 255
- PDF下载量: 990
出版历程
- 收稿日期: 2000-06-11
- 修回日期: 2000-09-19
- 刊出日期: 2001-04-21

ANALYSIS OF STRESS PATH SOILS DEFORMATION UNDER THE VACUUM DRAINAGE PRELOADING

1.
Changchun University of Science &|Technology, Changchun 130026;
2.
Nanjing Hydrology Research Institute of Water Conservancy, Nanjing 210024

摘要

摘要: 通过室内试验, 对真空排水预压下土体变形特性进行了应力路径分析, 测定软土地基在真空预压加固后应力路径的改变对沉降量的影响, 论证真空排水预压加固软土地基不能消除其剪应力引起的剪切变形, 结合实例, 计算其后期沉降量与固结沉降量的比值, 并推算软土地基在真空预压下其最终沉降量计算公式的修正系数。
- 真空预压 /
- 土体变形 /
- 应力路径
Abstract: The properties of soil deformation under vacuum drainage preloading are analyzed through the stress path in the paper , then the influences of the stress path change on the settlement is induced when the soil foundation is used after its consolidation by vacuum preloading. It also calculated the value of the residual settlement compared to the consolidation settlement. Finally, a formula for evaluating the final settlement is given.
- Vacuum drainage preloading /
- Soils deformation /
- Stress path

HTML全文

参考文献(1)

[1] K jellman,W.Consolidation of Clay Soil by Mean of AtmosphericPressure
[A].Pro.Conf.on Soil St abil izat ion,Massachusett s Institute of Technology
[C],1952.

[2] 林孔锱.预压地基从观测资料推算固结度与固结系数的方法
[R],1992.Lin KongZi.The Method of Calculating the Degree and Coefficient ofConsolidation of Preloading Foundation from the Measured Dat a,1992.

[3] 南京水利科学研究院.真空排水预压加固软土地基的理论与实践.1988,28~36.Nanjing Hydraulic R esearch Institute.The Theory and Pract ice of Improving Soft Foundation by Vacuum Preloading,1988,28~36.

[4] 殷宗泽.限制侧向变形的方法在地基加固中的应用
[J].河海大学学报,1999,27:9~12.YinZongZe.Application of Lat eral Deformation Restriction Method inFoundation Improvement,Journal of Hohai University,1999,27(Special Issue),9~12.

[5] 尚世佳等.真空预压法加固地基在工民建中的应用
[A].第三届塑料板排水法加固软基技术研讨会论文集
[C].南京:河海大学出版社,1996,189~196.Shang ShiJia.Applicat ion of Vacuum Preloading Method in Foundation Improvement of Industry and Civilian Const ruction,Proc.of the3rd Symp.on Weak Ground Improvement Using PrefabricatedDrains,NanJing:Hehai University Press,1996,189~196.

[6] G.R.,Loughney,et al..Vacuum Stabilizat ion of Subsoil BeneathRunway Extension at Philadelphia International A irport Halton
[A].Proc.)Intel.Conf.On Soil M ech.And Found.Eng.
[C],Montreal,Cannada,1965 62~65.

[7] 黄汉盛等.深圳机场软基处理的研究
[J].工程地质学报,1998,6(2):186~192.HuangHanSheng.The research of the soft soil?s foundat ion treatmentof ShenZhen airport,J.of Eng.Geo.,1998,6(2):186~192.