气候变化领域集成服务门户(CCPortal): Study on the Freeze-Thaw Process of the Lining Structures of a Tunnel on Qinghai-Tibet Plateau with the Consideration of Lining Frost Damage

CCPortal

DOI	10.1155/2021/4921365
	Study on the Freeze-Thaw Process of the Lining Structures of a Tunnel on Qinghai-Tibet Plateau with the Consideration of Lining Frost Damage
	Yu, Hong; Zhang, Kun; Zhu, Xiaoming; Tian, Zhizhuo; Zhang, Qinglong
通讯作者	Zhang, K (通讯作者)，Gansu Prov Transportat Res Inst Grp Co Ltd, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	1687-8434
EISSN	1687-8442
卷号	2021
英文摘要	In seasonally frozen ground, there are many frost problems in highway road tunnel after its excavation due to the heat exchange between the cold air and lining structure inside the tunnel. To mitigate these frost-related damages, thermal insulation layer is widely used at entrance and exit sections of the tunnel. In this study, a coupled mathematical model of heat, moisture, and stress was built for tunnels in seasonally permafrost regions. Then, based on the field-observed air temperature inside a roadway tunnel at Altun Mountain on the Qinghai-Tibet Plateau (QTP), seasonal freeze-thaw process of the surrounding rocks (SR) and lining structures were numerically investigated with the consideration of insulation methods: without insulation (WTIL) and laying the insulation layer on the inner surface of the second lining structure (STIL). Combined with the principle of Miner damage accumulation, the stress regimes of the lining structures of tunnel were investigated in WTIL and STIL. The results show that there was a significantly thermal disturbance of the SR after the tunnel excavation. In the 5(th) year of the operation period, the maximum seasonal freeze depth (MSFD) of the SR can reach 1.6 m at the vault of the arch and that at the inverted arch was only 1.0 m due to the pavement inside the tunnel. Then, both the absolute maximum value of the maximum principal stress (MAPS) and minimum principal stress (MIPS) in cold season were bigger than those in warm season comparing the value of the stress filed of the lining structure. In the same way, both the MAPS and MIPS of the lining structure in WTIL are bigger than those in STIL in numerical simulation. The positions of the maximum tensile stress of the primary lining structure in STIL and WTIL were inverted arch. For the lining structures, the greater tensile stress was generally harmful. Thus, the inverted arch of the tunnel should be laid on the insulation layer.
关键词	HYDRAULIC CONDUCTIVITY NONLINEAR-ANALYSIS INSULATION LAYER COUPLED HEAT COLD REGIONS MODEL SOIL TEMPERATURE TRANSPORT ROCK
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000675751800001
来源期刊	ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254716
作者单位	[Yu, Hong] Gansu Prov Highway Traff Construct Grp Co Ltd, Lanzhou 730030, Peoples R China; [Yu, Hong] Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Zhang, Kun; Tian, Zhizhuo; Zhang, Qinglong] Gansu Prov Transportat Res Inst Grp Co Ltd, Lanzhou 730000, Peoples R China; [Zhu, Xiaoming] Gansu Prov Transport Planning Survey & Designing, Lanzhou 730030, Peoples R China
推荐引用方式 GB/T 7714	Yu, Hong,Zhang, Kun,Zhu, Xiaoming,et al. Study on the Freeze-Thaw Process of the Lining Structures of a Tunnel on Qinghai-Tibet Plateau with the Consideration of Lining Frost Damage[J]. 中国科学院西北生态环境资源研究院,2021,2021.
APA	Yu, Hong,Zhang, Kun,Zhu, Xiaoming,Tian, Zhizhuo,&Zhang, Qinglong.(2021).Study on the Freeze-Thaw Process of the Lining Structures of a Tunnel on Qinghai-Tibet Plateau with the Consideration of Lining Frost Damage.ADVANCES IN MATERIALS SCIENCE AND ENGINEERING,2021.
MLA	Yu, Hong,et al."Study on the Freeze-Thaw Process of the Lining Structures of a Tunnel on Qinghai-Tibet Plateau with the Consideration of Lining Frost Damage".ADVANCES IN MATERIALS SCIENCE AND ENGINEERING 2021(2021).