气候变化领域集成服务门户(CCPortal): 多年冻土地区砂砾路面路堤临界高度数值分析(英文)

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	多年冻土地区砂砾路面路堤临界高度数值分析(英文)
	张明义; 赖远明; 张建明; 齐吉琳
发表日期	2004
期号	S1
中文摘要	In permafrost regions of Qinghai-Tibetan Plateau, the critical embankment height must be considered in the process of the construction of highway, especially for the global climatic warming. In this paper, the two-dimensional numerical analysis for the critical embankment height (for gravel road surface and coarse-grained soil) has been performed by using the finite element method. In the calculation, we think that the service life of the construction is at least 50 years. The mean annual air temperatures applied to the calculation model are -6.5 ℃, -6.0 ℃, -5.5 ℃, -5.0 ℃, -4.5 ℃ and -4.0 ℃, respectively, and the value of temperature rise are taken as 1.10℃ in the coming 50 years. The minimum embankment heights derived from the analysis are 0\^85 m, 0\^92 m, 1\^01 m, 1\^18 m, 1\^60 m and 2\^66 m for the different mean annual air temperatures and the maximum embankment heights are 7\^68 m, 7\^55 m, 7\^34 m, 7\^00 m, 6\^45 m and 5\^85m, accordingly. On condition that the service life of embankment is 50 years, the critical value of the mean annual air temperature is -3\^5 ℃. Namely, in the areas where the mean annual air temperature is higher than -3\^5 ℃, the critical embankment height does not exist.
关键词	critical embankment height gravel road surface mean annual air temperature numerical studies
语种	中文
来源期刊	冰川冻土
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/239673
作者单位	State Key Laboratory of Frozen Soil Engineering; CAREERI; CAS; Lanzhou Gansu 730000; China ;State Key Laboratory of Frozen Soil Engineering; CAREERI; CAS; Lanzhou Gansu 730000; China ;State Key Laboratory of Frozen Soil Engineering; CAREERI; CAS; Lanzhou Gansu 730000; China ;State Key Laboratory of Frozen Soil Engineering; CAREERI; CAS; Lanzhou Gansu 730000; China
推荐引用方式 GB/T 7714	张明义,赖远明,张建明,等. 多年冻土地区砂砾路面路堤临界高度数值分析(英文)[J]. 中国科学院西北生态环境资源研究院,2004(S1).
APA	张明义,赖远明,张建明,&齐吉琳.(2004).多年冻土地区砂砾路面路堤临界高度数值分析(英文).冰川冻土(S1).
MLA	张明义,et al."多年冻土地区砂砾路面路堤临界高度数值分析(英文)".冰川冻土 .S1(2004).