Investigation of Thermal Cooling Effectiveness of RRVCS for Permafrost Protection under Wide Expressway Embankment
Joint Authors
Ma, Tao
Wang, Hao
Tang, Tao
Xiao, Qiuming
Xu, Guangji
Huang, X.
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-19
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
In order to improve the thermal stability of wide embankment for the Qinghai-Tibet Expressway (QTE) to be constructed in permafrost zones on Qinghai-Tibet plateau, a new kind of reflective-resistant-ventilated coupling structure (RRVCS) was proposed and designed.
A numerical model was then developed through ABAQUS to investigate the influences of RRVCS on the thermal regime of wide embankment.
The temperature field and thawing depth of normal wide embankment without protective measures, wide embankment with crushed stone layer, and wide embankment with RRVCS were compared to verify the cooling effectiveness of RRVCS based on numerical analysis.
Vermiculite powder has great influences on the thermal property of asphalt mixture, and it can be reduced by 22.8%, 29.5%, 37.3%, and 50.6% after the addition of 4%, 6%, 8%, and 10% vermiculite powder, respectively.
Under the same condition, the temperature of RRVCS embankment is the lowest and its thermal stability is the best.
Setting crushed stone layer can improve the thermal stability of embankment.
However, the improvement is limited for wide embankment with width exceeding 26 m.
RRVCS has the best protective effects on the thermal stability of wide embankment and is recommended as a protective measure for wide embankment of expressway in permafrost regions of Qinghai-Tibet Plateau.
American Psychological Association (APA)
Tang, Tao& Ma, Tao& Huang, X.& Xiao, Qiuming& Wang, Hao& Xu, Guangji. 2018. Investigation of Thermal Cooling Effectiveness of RRVCS for Permafrost Protection under Wide Expressway Embankment. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1115596
Modern Language Association (MLA)
Tang, Tao…[et al.]. Investigation of Thermal Cooling Effectiveness of RRVCS for Permafrost Protection under Wide Expressway Embankment. Advances in Civil Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1115596
American Medical Association (AMA)
Tang, Tao& Ma, Tao& Huang, X.& Xiao, Qiuming& Wang, Hao& Xu, Guangji. Investigation of Thermal Cooling Effectiveness of RRVCS for Permafrost Protection under Wide Expressway Embankment. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1115596
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115596