Investigation of the Insulation Effect of Thermal Insulation Layer in the Seasonally Frozen Region Tunnel: A Case Study in the Zuomutai Tunnel, China
Joint Authors
Chen, Jianxun
Zhao, Pengyu
Luo, Yanbin
Chen, Lijun
Li, Yao
Wang, Chuanwu
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-09-30
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
In this study, a field temperature test was performed to reveal the insulation effect of the thermal insulation layer installed at lining surface.
The thermal insulation layer is made of polyphenolic, and the thickness is 7 cm.
According to the test results, the temperature of the thermal insulation layer and lining continuously changes with the air temperature in the tunnel in an approximately trigonometric function.
The temperature of tunnel lining without thermal insulation layer is close to the air temperature, which results in the lining frost in winter.
The maximum temperature difference between the two sides of the thermal insulation layer can be 27°C.
In the section whose buried depth is more than 11.4 m, the temperature of lining with thermal insulation layer in winter is mainly influenced by the cold air in the tunnel.
When the monthly mean and lowest daily mean air temperature are lower than −10°C and −14.3°C in the coldest month, the temperature at the inner side of the thermal insulation layer is below 0°C.
When the buried depth is less than 11.4 m, the temperature of lining is also influenced by the low temperature at ground surface.
The temperature of lining is lower.
The thicker thermal insulation layer and even active heat measure are needed.
Therefore, the design of thermal insulation layer thickness should consider the air temperature distribution and tunnel buried depth along the tunnel length.
American Psychological Association (APA)
Zhao, Pengyu& Chen, Jianxun& Luo, Yanbin& Chen, Lijun& Li, Yao& Wang, Chuanwu. 2019. Investigation of the Insulation Effect of Thermal Insulation Layer in the Seasonally Frozen Region Tunnel: A Case Study in the Zuomutai Tunnel, China. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1116371
Modern Language Association (MLA)
Zhao, Pengyu…[et al.]. Investigation of the Insulation Effect of Thermal Insulation Layer in the Seasonally Frozen Region Tunnel: A Case Study in the Zuomutai Tunnel, China. Advances in Civil Engineering No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1116371
American Medical Association (AMA)
Zhao, Pengyu& Chen, Jianxun& Luo, Yanbin& Chen, Lijun& Li, Yao& Wang, Chuanwu. Investigation of the Insulation Effect of Thermal Insulation Layer in the Seasonally Frozen Region Tunnel: A Case Study in the Zuomutai Tunnel, China. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1116371
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116371