干旱区生态环境知识资源中心(Arid): 寒旱区路基冻融风蚀复合侵蚀机理试验研究

Arid

	寒旱区路基冻融风蚀复合侵蚀机理试验研究
其他题名	EXPERIMENTAL STUDIES ON EROSION MECHANISM OF EMBANKMENTS SUBJECTED TO WIND AND FREEZE-THAW COMPOUND EROSION IN COLD AND ARID REGIONS
	李驰; 葛晓东; 高利平; 马云峰; 黄保生
来源期刊	工程力学
ISSN	1000-4750
出版年	2015
卷号	32 期号:10 页码:177-182,238
中文摘要	寒旱区路基常年受到风沙侵蚀,同时由于强烈温差变化造成路基填料因积雪融水入渗而引起冻融循环侵蚀破坏。路基会因风蚀和冻融侵蚀的复合作用引起结构损伤下抗剪强度的持续衰减。以内蒙古那-苏省际大通道锡林郭勒盟桑根达来段的风沙土填方路段为例,考虑不设边坡防护的裸边坡为最不利情况,通过冻融风蚀风洞试验研究路基在冻融循环和风蚀循环前后填料土体抗剪强度的变化规律,将路基填料土体抗剪强度的变化作为其抗复合侵蚀能力的表征,分析冻融循环侵蚀和风蚀作用对填料土体侵蚀机理的不同,以及两种不同侵蚀作用受填料含水率的影响,揭示寒旱区路基冻融风蚀复合侵蚀机理。
英文摘要	Wind-snow compound erosion is a combined effect of the wind, melting snow, and temperature in a natural environment, reflected in the interaction between wind erosion and freeze-thaw erosion. An embankment is subjected to wind erosion year-round, and suffered from freeze-thaw cycle erosion due to severe temperature variation driving snowmelt infiltration the filler in cold and arid regions. This research studies an unprotected embankment filled with Aeolian sandy soil located in a section of Sanggendalai in the Xilingol League, along the Inner Mongolia-Sue provincial highway. The shear strength variation of filler is analyzed before and after freeze-thaw cycles and wind erosion cycles simulated through wind erosion tunnel tests. A shear strength variation model is proposed for the characterization of compound erosion resistance. Wind and freeze-thaw erosion have different erosion mechanisms, and the influence of moisture contents on the filler is different for different erosion mechanisms. A compound erosion mechanism of wind and freeze-thaw erosion is presented through analysing the experimental results.
中文关键词	冻融风蚀 ; 抗复合侵蚀能力 ; 复合侵蚀机理 ; 风洞试验 ; 寒旱区路基
英文关键词	wind and freeze-thaw compound erosion compound erosion resistance compound erosion mechanism wind tunnel test subgrade in cold and arid regions
语种	中文
国家	中国
收录类别	CSCD
WOS类目	TRANSPORTATION
WOS研究方向	Transportation
CSCD记录号	CSCD:5537288
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232838
作者单位	内蒙古工业大学土木工程学院, 呼和浩特, 内蒙古 010051, 中国
推荐引用方式 GB/T 7714	李驰,葛晓东,高利平,等. 寒旱区路基冻融风蚀复合侵蚀机理试验研究[J],2015,32(10):177-182,238.
APA	李驰,葛晓东,高利平,马云峰,&黄保生.(2015).寒旱区路基冻融风蚀复合侵蚀机理试验研究.工程力学,32(10),177-182,238.
MLA	李驰,et al."寒旱区路基冻融风蚀复合侵蚀机理试验研究".工程力学 32.10(2015):177-182,238.