›› 2007, Vol. 28 ›› Issue (5): 1015-1020.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study on fractal character of shear surface of rock-soil aggregate mixture

DONG Yun1, 2, CHAI He-jun3   

  1. 1. Department of Civil Engineering, Huaiyin Institute of Technology, Huaian 223001, China; 2. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210097, China; 3. Chongqing Communications Research and Design Institute, Chongqing 400067, China
  • Received:2005-06-06 Online:2007-05-10 Published:2013-09-10

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Abstract: Rock-soil aggregate mixture is broadly used in roadbed, dykes and dams for its favorable engineering properties. Shear strength of the mixture becomes the most important mechanical index for stabilization and deformation analysis because it always occurrs shear failure along the weakness surface in filler. However, it is difficult to determine the shear strength for the complexity composition, non-regularity frame distributing of the mixture, and restriction of current measure instrument. This study carried out shear test on different kinds’ and different dmax rock-soil aggregate mixtures by using the improved shear test instrument, determined the intensity of the mixture conveniently; meanwhile, reappeared the actual shear surface; and further more, directly measured the gurgitation data of the surface. According to the principle of fractal geometry, the surface has well fractal property; the gurgitation data was used to calculate the fractal dimension of the shear surface by program that based on cover method of triangle prism superficial area. Finally, the relationship, between shear strength of the mixture and the fractal dimension of shear surface, is established so as to forecast the strength of the mixture quickly.

Key words: rock-soil aggregate mixture, shear test, shear surface, fractal dimension, shearing strength

CLC Number: 

  • TU 458
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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