Field experimental study on long-term cooling performance of sun-shaded embankments at the Qinghai-Tibet Railway, China

doi:10.1016/j.coldregions.2017.09.010

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Field experimental study on long-term cooling performance of sun-shaded embankments at the Qinghai-Tibet Railway, China
	Luo, Jing 2; Niu, Fujun 1,2; Wu, Libo 2; Lin, Zhanju 2; Liu, Minghao 2; Hou, Yandong 3; Miao, Qi 2
刊名	COLD REGIONS SCIENCE AND TECHNOLOGY
	2018-01
卷号	145 页码:14-20
关键词	Permafrost Qinghai-Tibet Railway Sun-shaded embankment Cooling performance
ISSN号	0165-232X
DOI	10.1016/j.coldregions.2017.09.010
英文摘要	Sun sheds were once used as an effective roadbed cooling technique in permafrost regions. Numerical and indoor-experiment results have confirmed the cooling effects of the sun-shaded embankments, but field-monitored data are still necessary to evaluate their long-term performance. This paper discusses the cooling effects of a sun shed over a section of the Qinghai-Tibet Railway embankment, by examining near-surface air and ground temperatures and the permafrost table depth at the shaded section, at an unshaded embankment section, and in surrounding natural ground. Monitoring results from 2006 to 2010 indicate that the sun shed has lowered near-surface air temperatures and underlying permafrost temperatures beneath the embankment, and promoted permafrost aggradation. The estimated annual heat budget of the permafrost beneath the sun-shaded embankment section has been negative over the past nine years, indicating the sustained cooling performance of the sun shed. This study confirms the utility of sun sheds as an effective design and maintenance concept for infrastructure embankments in warm permafrost regions, provided that the structure can resist harsh environmental conditions.
资助项目	State Key Laboratory of Frozen Soils Engineering[SKLFSE-ZT-32] ; State Key Laboratory of Frozen Soils Engineering[SKLFSE-ZQ-37]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000415834800002
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32936]
专题	土木工程学院
通讯作者	Niu, Fujun
作者单位	1.South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Guangdong, Peoples R China 2.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 3.Lan Zhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Luo, Jing,Niu, Fujun,Wu, Libo,et al. Field experimental study on long-term cooling performance of sun-shaded embankments at the Qinghai-Tibet Railway, China[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2018,145:14-20.
APA	Luo, Jing.,Niu, Fujun.,Wu, Libo.,Lin, Zhanju.,Liu, Minghao.,...&Miao, Qi.(2018).Field experimental study on long-term cooling performance of sun-shaded embankments at the Qinghai-Tibet Railway, China.COLD REGIONS SCIENCE AND TECHNOLOGY,145,14-20.
MLA	Luo, Jing,et al."Field experimental study on long-term cooling performance of sun-shaded embankments at the Qinghai-Tibet Railway, China".COLD REGIONS SCIENCE AND TECHNOLOGY 145(2018):14-20.