›› 2011, Vol. 32 ›› Issue (S1): 66-71.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Mesoscopic study of interface properties of geogrid-reinforced soil

CHEN Jian-feng1, LI Hui-li2, LIU Jun-xiu1, ZHOU Jian1   

  1. 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China； 2. Shanghai Institute of Geological Survey, Shanghai 200072, China
  • Received:2010-08-14 Online:2011-05-15 Published:2011-05-16

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Abstract: A large-size reinforced soil pull-out test was carried out and was simulated by particle flow code(PFC) to investigate the microscopic properties of geogrid-soil interface. The results show that the behavior of trigonometric group particles developed based on “clump” inherent in PFC is close to that of practical sand particles. The upper and lower geogrid-soil interfaces are not symmetrical such that the disturbed area of lower interface is higher than that of upper interface. Under the condition of low compactness of sand as well as low normal stress, the thickness of geogrid-soil interface decreases with increase of normal stress, exhibiting negative linear relationship.

Key words: geogrid, interface properties, particle flow code, pull-out test

CLC Number: 

  • TU 44
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