›› 2013, Vol. 34 ›› Issue (9): 2541-2545.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of frost heave and thawing settlement of soilbags under different freeze-thaw cycles

LI Zhuo1, 2，LIU Si-hong3，WANG Liu-jiang3，ZHANG Kai3，KONG Wei-yao3   

  1. 1. Nanjing Hydraulic Research Institute, Nanjing 210029, China; 2. Dam Safety Management Center of the Ministry of Water Resources, Nanjing 210029, China; 3. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
  • Received:2012-03-11 Online:2013-09-11 Published:2013-09-13

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Abstract: In order to reveal anti-frost heaving mechanism of soilbags under different freeze-thaw cycles in seasonally frozen regions, comparative model experiments on soilbags and soil are carried out under different freeze-thaw cycles, to investigate the frost heave relationship and the thawing settlement relationship between soilbags and soil, both in open and close systems. The results show that: Frost heave of soilbags is less than that of soil; thawing settlement of soilbags is also less than that of soil after experiencing 4 freeze-thaw cycles in closed system. Frost heave of soil is 1.9 times that of soilbags; thawing settlement of soil is 2.2 times that of soilbags in open system. Groundwater recharge for soilbags is far less than that for soil in open system. It is concluded that soilbags can efficiently prevent building foundation from frost heave collapse, and it can provide references to frost heave prevention of canal linings.

Key words: freeze-thaw cycles, soilbags, frost heave, thawing settlement, seasonally frozen regions

CLC Number: 

  • TU 411
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