New recognition of collapsibility evaluation and remnant collapse of loess

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	New recognition of collapsibility evaluation and remnant collapse of loess
	Yao, Zhi-Hua 1; Huang, Xue-Feng 1,3; Chen, Zheng-Han 1; Fang, Xiang-Wei 1; Miao, Qiang-Qiang 1,2; Zhang, Jiang-Shui 1
刊名	Yantu Lixue/Rock and Soil Mechanics
	2014-04-01
卷号	35 期号:4 页码:998-1006
关键词	Rock mechanics Soil mechanics Collapsibility coefficient Collapsible loess Computed collapse Depth corrections Overburden pressures Remnant collapse
ISSN号	10007598
英文摘要	Based on summarized results of several large-scale soaking tests, some new recognition about methodology of collapsibility evaluation and reasonable limit of remnant collapse are proposed to modify difference between computed collapse under overburden pressure and measured value, and to decrease the collapsible loess treatment depth. When acquiring the computed collapse under overburden pressure, a depth correction factor ξ is suggested to make computed collapse under overburden pressure and the computed collapse of laboratory tests approximate measured collapse of in-situ tests; and it will decrease remnant collapse of collapsible loess in deeper position in some degree. When obtaining computed collapse, a scheme amplifying coefficient threshold of collapsibility (0.015) is presented, the method combined with depth correction factor ξ can reach the expected goal to enlarge the computed collapse and decrease remnant collapse of deeper collapsible loess. The conception "critical collapsibility depth" of dead weight collapse loess with heavy section is proposed; the critical collapsibility depth is set as 20-25 m temporarily according to some test data. In combination with the method of depth correction factor and amplifying coefficient threshold of collapsibility, the conception of critical collapsibility depth can decrease effectively remnant collapse of collapsible loess. The research results will be of interest for similar projects in the area of dead weight collapse loess and be useful to revise "standard for building construction in collapsible loess regions".
WOS研究方向	Engineering
语种	中文
出版者	Academia Sinica
WOS记录号	WOS:000409737400013
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113626]
专题	兰州理工大学
作者单位	1.Department of Architectural Engineering, Logistic Engineering University of PLA, Chongqing 401311, China; 2.Chongqing Communications Research and Design Institute, Chongqing 400067, China 3.School of Civil Engineering, Lanzhou University of Science and Technology, Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Yao, Zhi-Hua,Huang, Xue-Feng,Chen, Zheng-Han,et al. New recognition of collapsibility evaluation and remnant collapse of loess[J]. Yantu Lixue/Rock and Soil Mechanics,2014,35(4):998-1006.
APA	Yao, Zhi-Hua,Huang, Xue-Feng,Chen, Zheng-Han,Fang, Xiang-Wei,Miao, Qiang-Qiang,&Zhang, Jiang-Shui.(2014).New recognition of collapsibility evaluation and remnant collapse of loess.Yantu Lixue/Rock and Soil Mechanics,35(4),998-1006.
MLA	Yao, Zhi-Hua,et al."New recognition of collapsibility evaluation and remnant collapse of loess".Yantu Lixue/Rock and Soil Mechanics 35.4(2014):998-1006.