›› 2013, Vol. 34 ›› Issue (S1): 293-300.

• Geotechnical Engineering • Previous Articles     Next Articles

Seismic stability of anchored rock slope using pseudo-dynamic method

RUAN Xiao-bo1，SUN Shu-lin2, 3，LIU Wen-liang3   

  1. 1. College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China; 2.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; 3.College of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
  • Received:2013-05-06 Online:2013-08-30 Published:2014-06-09

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Abstract: In seismic prone areas, it is necessary to study seismic stability of anchored rock slope. For anchored typical rock slope, the seismic safety factor of anchored rock slope against sliding and overturning failures is deduced by pseudo-static method and pseudo-dynamic method, respectively, in the different working conditions, considering both horizontal and vertical seismic forces, depth of water in tension crack, surcharge, dip angle of rock bolt, rock bolt position, tension force of rock bolt, and both hydrostatic and hydrodynamic pressures. The conclusions can be drawn that the upward vertical seismic force is conducive to the stability of anchored rock slope against sliding failure; but the downward vertical seismic force is conducive to the stability of anchored rock slope against overturning failure; in the same working conditions, the pseudo-dynamic and pseudo-static safety factors are all the same as the amplification factor is equal to 1.0; but the pseudo-dynamic safety factor is more and more obvious less than the pseudo-static safety factor as the amplification factor gradually increases. In seismic design, it will be beneficial to the safety design of anchored rock slope by appropriately considering the amplification factor.

Key words: rock slope, seismic stability, pseudo-dynamic method, anchorage, hydrodynamic pressure

CLC Number: 

  • TU457
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