Experimental Study on Mechanical Properties of Artificial Frozen Soil in Marine Sedimentary Soft Clay
详细信息
- 责任者：Xu Li (College of Architectural Civil Engineering and Environment ; Ningbo University ; Ningbo 315211 ; China) ; Liu Ganbin
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2011
- 卷期：38(2)
- 关键词：冻土 ; frozen ground ; 压缩试验 ; compression tests ; 剪切试验 ; shear tests ; 冻结法 ; freezing methods
- 页码：p.73-78
- 图表：5 illus., 6 tables, 8 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
In this paper, the uniaxial compressive strength and shear strength test of frozen soil of the ② ～ ⑤ layer marine sedimentary soft clay for the passway of tunnels in the line 1, Ningbo urban rail transit project are executed. The results show that the mechanical parameters of ② ～ ⑤ stratums are improved greatly after freezing due to the high water content. The uniaxial compressive strength and shear modulus linearly increase with the decrease temperature, but there is a little influence of decrease temperature on the decrease of Poisson ratio. The internal friction angle and cohesion at -10 ℃ increase remarkably in comparison with the undisturbed soil in the soft clay, and the increase of internal friction angle in ③1 sand layer is small.