DOI: 10.1007/s11069-020-04049-x
论文题名: Experimental study on the evolution of the drained mechanical properties of soil subjected to internal erosion
作者: Chen L. ; He J. ; Yang S. ; Dou S. ; Su D.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 1 起始页码: 1565
结束页码: 1589
语种: 英语
中文关键词: Drained mechanical properties
; Internal erosion
; Loss of fine particles
; Modified Duncan–Chang model
英文关键词: numerical model
; particle size
; shear test
; soil erosion
; soil mechanics
; soil structure
; stress-strain relationship
; triaxial test
英文摘要: Internal erosion can cause geotechnical structures to fail due to the loss of fine particles, which is induced by internal erosion that can weaken the mechanical properties of soil. Few studies have focused on the effect of internal erosion on the mechanical properties of soil. Accordingly, the present paper studies the evolution laws of the drained mechanical properties of soil due to internal erosion by conducting a series of triaxial consolidated drained shear tests and using the fine particle elimination method. The main conclusions of the study are as follows. Under the same confining pressure, the strain-softening phenomenon of the stress–strain curve will decrease with an increasing loss of fine particles, and a soil sample with a lower loss rate of fine particles will have a more dilative response. The loss of fine particles decreases the drained failure strength and drained internal friction angle. Mathematical relationships between the drained failure strength and the loss rate of fine particles and between the drained internal friction angle and the loss rate of fine particles have been established. A modified Duncan–Chang model that considers the loss of fine particles induced by internal erosion has been established. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168429
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, College of Civil and Transportation Engineering, Hohai University, No. 1 of Xikang Road, Nanjing, 210098, China; Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing, China; Nanjing Water Planning and Designing Institute.Corp.Ltd, Nanjing, 210022, China
Recommended Citation:
Chen L.,He J.,Yang S.,et al. Experimental study on the evolution of the drained mechanical properties of soil subjected to internal erosion[J]. Natural Hazards,2020-01-01,103(1)