NDLI: Experimental study on shear characteristics of sand under high pressure

Content Provider	IEEE Xplore Digital Library
Author	Lu Yong Zhou Guoqing Zhou Jie Xia Hongchun
Copyright Year	2011
Description	Author affiliation: School of Civil Engineering, Liaocheng University, 252059, China (Xia Hongchun) \|\| State Key Laboratory for GeoMechanics and Deep Underground Engineering (CUMT), Xuzhou 221008, China (Lu Yong; Zhou Guoqing; Zhou Jie)
Abstract	For mastering the strength and deformation properties of sand under high pressure, DRS-1 high pressure direct shear test system was used in shear test of Fujian standard sand under 12 to 15 MPa. Through analysis of the test results, we obtained that shear properties of standard sand under high pressure show strain hardening, it is consistent with Duncan-Chang hyperbolic model. There is a proportional relationship between shear stress τ and vertical stress σn while εs becomes infinite, which is obtained from the relationship between εs/τ and εs. Under high pressure, the friction coefficient of standard sand's shear failure surface increases with shear strain. The value does not change with vertical stress σn and the final stable value is about 0.46. Shear properties of standard sand under high pressure show volume contraction which can also simulated by Duncan-Chang hyperbolic model. The relationship between volume contraction εv and σn is similar to Mohr - Coulomb criterion when the sand sample is damaged.
Starting Page	5035
Ending Page	5039
File Size	903747
Page Count	5
File Format	PDF
ISBN	9781457702891
e-ISBN	9781457702907
DOI	10.1109/ICETCE.2011.5774332
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid modeling Hardening Friction Duncan-Chang hyperbolic model Soil Mohr - Coulomb Rocks Stress Volume contraction Strain High pressure direct shear
Content Type	Text
Resource Type	Article

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