Application of expansion hole theory in fracture grouting of unsaturated loess

doi:10.14006/j.jzjgxb.2018.S1.048

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Application of expansion hole theory in fracture grouting of unsaturated loess
	Zhou, Mingru 1,2; Zhang, Jianbin 1,2; Lu, Guowen 1,2; Chao, Xin 1,2; Cheng, Junxi 1,2
刊名	Jianzhu Jiegou Xuebao/Journal of Building Structures
	2018-09-01
卷号	39 页码:368-378
关键词	Clay Concrete construction Deformation Forecasting Fracture Grouting Sediments Unsaturated polymers Comparison and analysis Fracture grouting General strength criterion Loess Pressure predictions Strength criteria Theoretical calculations Undrained conditions
ISSN号	10006869
DOI	10.14006/j.jzjgxb.2018.S1.048
英文摘要	In order for the application of the hole expansion theory to the unsaturated loess splitting grouting, the soil around the hole is divided into elastic zone and plastic zone. In the elastic region, the hypothesis of small deformation is assumed while the theory of large deformation is assumed in the plastic zone. The general strength criterion of clay soil (SMP, Lade-Duncan, M-C) is adopted. The prediction formulas of splitting grouting pressure under undrained condition in loess area under different theories are deduced. The time history curve of pressure and grouting amount is obtained by field grouting test. On the basis of three-dimensional scatter plot, the comparison and analysis of the theoretical calculation results and field grouting data are conducted. It shows that in the prediction formula of the Loess splitting grouting pressure based on the general strength criterion of the clay soil, the Land-Duncan criterion and the SMP criterion can consider the principle stress. Thus the results are more accurate than the traditional Mohr-Cunlomb method. The mechanism analysis of loess grouting pressure shows that when the pressure is not high, the grout mainly compacts the soil, and when the pressure exceeds the splitting pressure, the soil splits. © 2018, Editorial Office of Journal of Building Structures. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114424]
专题	土木工程学院材料科学与工程学院
作者单位	1.Gansu Provincial Key Laboratory for Disaster Prevention and Reduction of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Northwest Center for Disaster Mitigation in Civil Engineering of China Ministry of Education, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhou, Mingru,Zhang, Jianbin,Lu, Guowen,et al. Application of expansion hole theory in fracture grouting of unsaturated loess[J]. Jianzhu Jiegou Xuebao/Journal of Building Structures,2018,39:368-378.
APA	Zhou, Mingru,Zhang, Jianbin,Lu, Guowen,Chao, Xin,&Cheng, Junxi.(2018).Application of expansion hole theory in fracture grouting of unsaturated loess.Jianzhu Jiegou Xuebao/Journal of Building Structures,39,368-378.
MLA	Zhou, Mingru,et al."Application of expansion hole theory in fracture grouting of unsaturated loess".Jianzhu Jiegou Xuebao/Journal of Building Structures 39(2018):368-378.