Experimental analysis of  horizontal frost heaving force of loess in Lanzhou City of Gansu Province Area

ZHANG Zheng; MA Xuening; ZHU Qiyou

doi:10.16031/j.cnki.issn.1003-8035.2021.01.14

2021 Vol. 32, No. 1

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Article navigation > The Chinese Journal of Geological Hazard and Control > 2021 > 32(1): 102-107

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ZHANG Zheng, MA Xuening, ZHU Qiyou. Experimental analysis of horizontal frost heaving force of loess in Lanzhou City of Gansu Province Area[J]. The Chinese Journal of Geological Hazard and Control, 2021, 32(1): 102-107. doi: 10.16031/j.cnki.issn.1003-8035.2021.01.14

Citation:

ZHANG Zheng, MA Xuening, ZHU Qiyou. Experimental analysis of horizontal frost heaving force of loess in Lanzhou City of Gansu Province Area[J]. The Chinese Journal of Geological Hazard and Control, 2021, 32(1): 102-107. doi: 10.16031/j.cnki.issn.1003-8035.2021.01.14

Experimental analysis of horizontal frost heaving force of loess in Lanzhou City of Gansu Province Area

College of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu　730070, China

More Information

Corresponding author: MA Xuening, mxn1974@163.com

Received Date: 13 November 2019

Revised Date: 02 March 2020

Publish Date: 25 February 2021

Abstract

Abstract

In order to study the variation of temperature field and horizontal frost heaving force during the one-dimensional freezing and melting process of loess with different water content, the one-dimensional freezing and melting test under closed system was carried out on the loess from Lanzhou Area. The results show that the cooling process of the soil can be divided into four stages. The temperature drop rate of the soil at each depth is faster when the temperature is frozen. When the temperature drops to 0.4 ℃, the cooling curve shows a turning point, and the depth of the soil decreases. A plateau that is nearly parallel to the abscissa; the temperature of the soil at each depth is slower at the late stage of freezing. The maximum horizontal frost heaving force changes little along the soil depth, then increases to the maximum and finally decreases. The maximum value of horizontal frost heaving force changes obviously with the water content. The higher the water content is, the greater the horizontal frost heaving force is, while the other values are less affected by the water content. The maximum value of horizontal frost heaving force appears at the relative depth of 0.6 to 0.8.
- horizontal frost heave force /
- model test /
- frozen soil /
- temperature field /
- frost heave

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References

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