Abstract
The performance of highway subgrade is affected not only by soil type but also by other parameters such as water and temperature. Distribution and variation of temperature in subgrade affect the stability of highway subgrade in seasonal frozen area. In seasonal frozen areas, water accumulation in highway subgrade can cause frost heave and thaw settlement, which will finally affect the function of road structures. Due to its waterproof performance, geosynthetic clay liner (GCL) is mainly used in engineering practice as an effective material for sealing, isolation and leakage prevention. So it may be introduced into highway subgrade to provide possible moisture and temperature adjustment. Through water and heat coupling analysis of two kinds of subgrade models, following conclusions can be drawn. GCL can effectively prevent rainfall infiltration and adjust moisture field of subgrade. GCL in the subgrade can significantly decrease the maximum freezing depth and thereby reduce the frost damage risk of the highway subgrade in Seasonal frozen soil area.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Rainwater NR (1999) Comprehensive monitoring systems for measuring subgrade moisture conditions. J Transp Eng 125(5):439–448
Sheng DC, Zhang S, He Z (2014) Assessing frost susceptibility of soils. Chin J Rock Mech Eng 33(2):594–605 (in Chinese)
Tai B et al (2017) Numerical modelling of anti-frost heave measures of high-speed railway subgrade in cold regions. Cold Reg Sci Technol 141:28–35
Harlan RL (1973) Analysis of coupled heat-fluid transport in partially frozen soil. Water Resour Res 9(5):1314–1323
Xu J, Niu FJ, Li AM et al (2010) Analysis of the prevention effect of thermal-insulation method on frost heave of railway subgrade in seasonal frozen regions. J China Railw Soc 32(6):124–131 (in Chinese)
Xu SH, Chen DL (2002) Suitability of models describing soil water retention curve. Acta Pedologica Sinica 39(4):498–504 (in Chinese)
van Genuchten MT (1980) A closed-form equation for predicting the hydraulic conductivity of un-saturated soil. Soil Sci Soc Am J 44(5):892–898
Rowe RK, Rentz AK, Brachman RWI et al (2016) Effect of GCL type on downslope erosion in an exposed composite liner. J Geotech Geoenvironmental Eng 142(12):04016074
Liu Y, Cai M, Ju W (2007) Thermal properties of buffer material for high-level radioactive waste disposal. Chin J Rock Mech Eng 26:3891–3896 (in Chinese)
Jia H (2015) Analysis and calculation of groundwater resources in the Southern Valley of Inner Mongolia Autonomous Region Ulanhot. Master thesis, China University of Geosciences (in Chinese)
Acknowledgement
This research was sponsored by the National Natural Science Foundation of China (No. 41672280, 41330641). The authors are also grateful for the financial supports from Traffic Science and technology projects of Inner Mongolia and Jilin Province.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Liu, F., Liu, Z., Yin, F., Zhang, S., Wang, Y. (2019). Effect of GCL on Moisture and Temperature Fields of Highway Subgrade Through Numerical Analysis. In: Zhan, L., Chen, Y., Bouazza, A. (eds) Proceedings of the 8th International Congress on Environmental Geotechnics Volume 2. ICEG 2018. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-2224-2_75
Download citation
DOI: https://doi.org/10.1007/978-981-13-2224-2_75
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-2223-5
Online ISBN: 978-981-13-2224-2
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)