›› 2009, Vol. 30 ›› Issue (11): 3256-3260.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of mechanical behaviour of soil-structure interface by ring shear test

YANG You-lian1, 2，ZHU Jun-gao1, 2，YU Ting3，WU Xiao-ming4   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098 China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 3.Chengdu Hydroelectric Investigation and Design Institute, Chengdu 610072, China; 4. Daduhe Hydropower Development Co., Ltd, Chengdu 610016, China
  • Received:2008-08-12 Online:2009-11-10 Published:2010-01-07

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Abstract:

The mechanical behaviour of soil-structure interface was investigated by using ring shear apparatus. The different interfaces include three types. The test results show that the stress-strain behaviour of different interfaces is apparently different. Mud-cake can change the contacting properties of interface. For the case without mud-cake, failure plane may occur in soil or on soil-structure interface. For that with mud-cake, for example drilling pore pile, failure plane is always taking place in mud-cake. In all tests, the relationship between average shear stress and normal stress is linear; and the shear strength of interface may be described with Mohr-Coulomb criterion. Friction angle of interface with mud-cake is only 63.4 % of that without mud-cake.

Key words: ring shear apparatus, interface, mud-cake, stress-strain relationship

CLC Number: 

  • TU 411
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