中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Experimental and numerical investigation on temperature characteristics of in-cuts roadbed in Qinghai-Tibetan railway

文献类型:期刊论文

作者Zhang, Mingyi; Lai, Yuanming; Zhang, Jianming; Li, Shuangyang
刊名COLD REGIONS SCIENCE AND TECHNOLOGY
出版日期2006-11-01
卷号46期号:2页码:113-124
关键词temperature characteristics in-cuts roadbed insulation crushed rock imported fill Qinghai-Tibetan railway
ISSN号0165-232X
DOI10.1016/j.coldregions.2006.07.005
通讯作者Lai, Yuanming(ymlai@lzb.ac.cn)
英文摘要By analyzing the temperature characteristics and damages of the experimental in-cuts roadbed at Beiluhe site of Qinghai-Tibetan railway, we find that it is difficult to ensure the stability of the in-cuts roadbed in warm permafrost regions if it is filled with coarse-grained soil with a low water content at the roadside slopes and bottom, and insulation is only embedded in its bottom imported fill layer. Therefore, in this paper, two in-cuts roadbed structures, i.e., insulated structure with insulation embedded in imported fill layers at the bottom and side slopes, and crushed-rock structure with insulation only embedded in imported fill layer at the side slopes and crushed rock filled at the bottom, are proposed. The numerical analyses indicate that, in the areas where the mean annual air temperature is -4.0 degrees C and under the assumption that the mean annual air temperature will be warmed by 1.0 degrees C in the future 50 years, the insulated structure can ensure the stability of its side slopes, however, the bottom settlement can not be effectively controlled; The crushed-rock structure can not only keep the permafrost table in the imported fill layer and ensure the stability of the side slopes, but also cool down the underlying permafrost and control the bottom settlement. Therefore, when the in-cuts roadbed must be constructed in warm permafrost regions, the crushed-rock structure can be an effective approach to ensure the safety of roadway. (c) 2006 Elsevier B.V. All rights reserved.
收录类别SCI
WOS关键词PERMAFROST REGIONS ; EMBANKMENTS ; CONVECTION
WOS研究方向Engineering ; Geology
WOS类目Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary
语种英语
WOS记录号WOS:000241937500003
出版者ELSEVIER SCIENCE BV
URI标识http://www.irgrid.ac.cn/handle/1471x/2555830
专题寒区旱区环境与工程研究所
通讯作者Lai, Yuanming
作者单位Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Mingyi,Lai, Yuanming,Zhang, Jianming,et al. Experimental and numerical investigation on temperature characteristics of in-cuts roadbed in Qinghai-Tibetan railway[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2006,46(2):113-124.
APA Zhang, Mingyi,Lai, Yuanming,Zhang, Jianming,&Li, Shuangyang.(2006).Experimental and numerical investigation on temperature characteristics of in-cuts roadbed in Qinghai-Tibetan railway.COLD REGIONS SCIENCE AND TECHNOLOGY,46(2),113-124.
MLA Zhang, Mingyi,et al."Experimental and numerical investigation on temperature characteristics of in-cuts roadbed in Qinghai-Tibetan railway".COLD REGIONS SCIENCE AND TECHNOLOGY 46.2(2006):113-124.

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来源:寒区旱区环境与工程研究所

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