Study on Thawing Settlement and its Influenced Factors of Embankment in Seasonal Frost Area

Abstract:

Frost heaving and thawing settlement were the common diseases in seasonal frost area. In order to study the influenced factors of the subgrade thawing settlement, a series investigation were done on the subgrade of the Beijing-Baotou-Lanzhou railway line at the Chasuqi and Wulate qianqi sections from January to June. It was found that thawing settlement existed in embankment had great influence on the safety of subgrad running. This was less influenced by the even settlement, but was dangerous under the uneven state because of the track irregularity and its divorce from the ballast. The main factors affected the embankment thawing settlement included soil composition, water content and kind, environment temperature and the loading on soil. The larger thawing settlement would observed in the soil with large amount of silt particle, at the regions of low underground water level, with the kind of salt sensitive to frozen, at the atmosphere of the higher negative temperature sustaining a long time.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 756-760
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.756
• Online since: November 2013
• Authors: Li Yun Peng*, Jian Kun Liu, Ya Hu Tian
• Keywords: Embankment, Influenced Factors, Seasonal Frost Area, Settlement Investigation, Thawing Settlement

References

[1] Chen Xiaobai, Liu Jiankun, Liu hongxu, Frost Action of Soil and Foundation Engineering [M], Beijing: Science Press. (2006).

[2] Cheng Aijun, The study on frost heave classification of railway subgrade [D], Beijing: China Academy of Railway Sciences. (2006).

[3] Liu Jiankun, Tong Changjiang, Fang Jianhong, Introduction in geotechnical engineering [M], Beijing: Railroad Publication House of China. (2004).

[4] Wang Changsheng, Study of road frost boiling model of Changchun City [D], Jilin: Jilin University. (2006).

[5] Bergan,A. T, Fredlund,D. G, Characterization of freeze-thaw efects on subgrade soils[A], Proc. Symp. On frostmAction in Soil, Organization for economic Cooperation and Development, Oslo, Norway. (1972).

[6] Simonsen,E., Janoo. VC, Isacsson. U, Prediction of pavement response during freezing and thawing using a finite element approach[J], ASCE. Cold Regions Eng., 11(4), 308~324. (1997).

DOI: 10.1061/(asce)0887-381x(1997)11:4(308)