American Society of Civil Engineers


Numerical Simulation of Embankment Deformation Caused by Southern and Northern Slopes in Seasonally Frozen Ground Region


by Weina Wang, (Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Nanerhuan Road, Xi’an, China, 710064. E-mail: wwn0816@yeah.net), Xilan Zhi, (Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Nanerhuan Road, Xi’an, China, 710064. E-mail: gl19@chd.edu.cn), Xuesong Mao, (Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Nanerhuan Road, Xi’an, China, 710064. E-mail: xuesongxian@yahoo.com.cn), and Zhongjie Hou, (Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Nanerhuan Road, Xi’an, China, 710064. E-mail: zhongjiehou@126.com)
Section: Traffic Infrastructure Design and Construction, pp. 3222-3233, (doi:  http://dx.doi.org/10.1061/41186(421)320)

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Document type: Conference Proceeding Paper
Part of: ICCTP 2011: Towards Sustainable Transportation Systems
Abstract: Highway embankment nonuniform deformation related to temperature field and moisture field has caused serious distresses. In seasonally frozen ground region, due to the southern and northern slopes of embankment, the nonuniform deformation often occurs. This paper chooses Jixi region in Heilongjiang Province, China as a seasonally frozen ground region for analysis. By the finite element method, the process of freeze-thaw phase transition of the embankment with mixed boundary conditions of the 2nd and 3rd types is considered. The variations of temperature field and the temperature differences between southern and northern slopes in seasonally frozen ground region are also analyzed. Based on the temperature field and the position and shape of freezing front, freezing coefficient and thawing coefficient are introduced and the embankment deformation caused by the temperature differences is presented. The results may provide scientific basis for road construction and maintenance in seasonally frozen ground region.


ASCE Subject Headings:
Simulation
Embankments
Soil deformation
Slopes
Frozen soils
Highways and roads
China