Analysis on Displacement and Porewater Pressure of Soft Soil Foundation Undervacuum-Surcharge Preloading
详细信息
- 责任者：Wei Jiaming (Jilin University College of Construction Engineering ; Changchun 130021 ; China) ; Wang Qing
- 刊名：Journal of Engineering Geology
- 出版年：2012
- 卷期：20(1)
- 关键词：地基 ; foundations
- 页码：p.116-122
- 图表：7 illus., 2 tables, 12 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
This paper is based all kinds of soft soil foundation monitoring results of a first-class highway.The monitoring data of the foundation surface settlement,porewater pressure,soil horizontal displacement variation rules of time and space are analyzed in detail.The results show that about 65 percents of the total settlement of foundation is due to the silt layer.The horizontal displacement of low liquid limit clay layer(under 15 m) is smaller.It is related to its bigger soil intensity.Excessive fast filling velocity can make the general excessive porewater pressure above zero.Therefore close observation of the data of pore pressure is needed in surcharge preloading process in order to prevent the foundation instability.