Analysis on wetting deformation properties of silty clay

作者：Liu Xinrong; Qi Dahe^*; Yu Yu; Yang Zhongping

来源：Journal of Engineering Science and Technology Review, 2014, 7(3): 39-44.

DOI：10.25103/jestr.073.06

• Different confining pressures
• Duncan Chang model
• Foundation pit engineering
• Hydraulic engineering
• Silty clay
• Theoretical research
• Triaxial apparatus
• Wetting deformations

Changes in water level that cause deformation and stability problems often occur in foundation pit engineering. Water damage is one of the main problems that will lead to disasters in foundation pit engineering. Research findings with regard to properties of wetting deformation due to water damage can be applied not only in foundation pit engineering, slope engineering, hydraulic engineering, and mining engineering but also in related issues in the field of theoretical research and practice. In this study, the characteristics of silty clay deformation after wetting are examined from the perspective of the effect of wetting on the side wall of foundation pit, and wetting experiments on silty clay of a selected areas stratum located in Chongqing Municipality are conducted under different confining pressures and stress levels through a multi-function triaxial apparatus. Then, laws of silty clay wetting deformation are obtained, and the relationship between wetting stress level and wetting deformation amount is also figured out. The study reveals that the maximum values of wetting deformation under different confining pressures have appear at a particular stress level; therefore, the related measures should be taken to avoid this deformation in the process of construction.

• 出版日期2014
• 单位The University of Arizona