›› 2007, Vol. 28 ›› Issue (5): 1031-1034.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Test study on interaction characteristics between two-way geogrids and clay

ZHANG Wen-hui1, 2, WANG Bao-tian1, 2, ZHANG Fu-hai1, 2, LI Shou-de1, 2   

  1. 1.Key Laboratory for Geotechnical Engineering of Ministry of Water Resources, Hohai University, Nanjing 210098, China； 2.Institute of Geotechnical Engineering, Hohai University, Nanjing 21098, China
  • Received:2006-04-06 Online:2007-05-10 Published:2013-09-10

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Abstract: The interaction characteristics between reinforcements and soil are the key index in reinforced earth, which determines the stability of reinforced earth. Pullout test results show that the quantity of apparent frictional resistance between two-way geogrids and clay increases with the normal stress increasing. The failure format between two-way geogrids and clay is the entirety two-way geogrids pulled out when the normal stress is lower, but as long as the normal stress is higher than some certain quantity, the failure format between two-way geogrids and clay is changed from entirety pulled out to longitudinal gill pulled out. The apparent cohesion of entirety pulled out failure format is less than that of longitudinal gill pulled out failure format; and the apparent friction angle is reverse.

Key words: two-way geogrids, pullout test, apparent frictional resistance, apparent cohesion, apparent friction angle

CLC Number: 

  • TU 41
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