›› 2009, Vol. 30 ›› Issue (6): 1549-1554.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Slope safety factor by methods of particle flow code strength reduction and gravity increase

ZHOU Jian 1, 2，WANG Jia-quan 1, 2，ZENG Yuan3，JIA Min-cai 1,2   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai, 200092, China; 3. CCCC Third Harbor Consultants Co.,Ltd., Shanghai 200032, China
  • Received:2007-07-09 Online:2009-06-10 Published:2011-03-09

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Abstract:

trength reduction method and gravity increase method are introduced into the discrete element method for experimental study of slope safety factor. The research of slope stability is carried on by using particle flow code (PFC) software and adopting strength reduction and gravity increase methods, and the result is close to the calculation results of finite element method and slice method. The method opens a new way for calculating slope stability. If using PFC to solve the slope safety factor, slice method is not needed, namely it does not need to make an assumption of the inter-slice force. And at the same time, it does not need to assume the position and the shape of the sliding surface, because the particles adjust their positions according to their received contact forces; and finally, the shear failure of the slope occurs on the weakest surface of shear strength. Different viewpoints are put forward about inequality proportion reduction of strength reduction method, which provide new speculations for future research.

Key words: particle flow code(PFC), discrete element method, strength reduction method, gravity increase method, safety factor

CLC Number: 

  • TU 457

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