›› 2005, Vol. 26 ›› Issue (4): 664-666.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Modification of formula estimating ultimate bearing capacity of rock foundation based on Hoek-Brown strength criterion

LI Pei-yong，YANG Qing，LUAN Mao-tian   

  1. School of Civil and Hydraulic Engineering, and State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2003-12-19 Online:2005-04-09 Published:2013-12-19

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Abstract: To estimate the ultimate bearing capacity of the rock foundation is very important for the safety of the structure engineering. The purpose of this paper is to research the formula based on Hoek-Brown strength criterion, which estimates the ultimate bearing capacity of rock foundation under shear failure model. After estimating normal stress on the potential failure plane, instantaneous internal friction angle and deadweight of rock masses were calculated. On the basis of Hoek-Brown strength criterion and limiting equilibrium method, the formula was derived again. A modified formula is put forward, including the deadweight and instantaneous internal friction angle. Finally, the modified formula is verified by an engineering example. The results show that the modified formula is more reliable.

Key words: Hoek-Brown strength criterion, instantaneous internal friction angle, ultimate bearing capacity of rock foundation, shear failure

CLC Number: 

  • TU 456
  • 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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