›› 2010, Vol. 31 ›› Issue (12): 3861-3866.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis of shear stress along pressure-type anchorage cable in weathered rock mass

XIA Yuan-you1, YE Hong 1, 2, LIU Xiao-he3, CHEN Jie1   

  1. 1. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; 2. Department of Transportation Engineering, Wuhan Technical College of Communications, Wuhan 430065, China; 3. Qinhuangdao Glass Design & Research Institute, Qinhuangdao, Hebei 066001, China
  • Received:2010-04-15 Online:2010-12-10 Published:2010-12-21

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Abstract:

The physical properties of rock would be varied with its weathering process levels. Combining with the stress state of anchorage cable in homogeneous rock mass and distributing rule of shear strength in transverse isotropy elastomer under interior symmetry load, the distributing equations of shear strength of anchorage cable in transversely isotropy elastic rock mass are deduced. Assuming that the elastic modulus of weathered rock changes with exponential function, the analysis results show that: ① The shearing strength of anchorage section would increase (or decrease) with the increase (or decrease) of the elastic modulus which change with the depth of weathered rock. ② The shearing strength of anchorage section near to the load-bearing plate would increase with the decrease of anchorage cable boring radius. And the shearing strength changes obviously with the shear modulus of weathered rock. ③ The shearing strength on anchorage section interface close to the load-bearing plate would change with the shear modulus which is in the surface perpendicular to the surface of rock. The research results will provide references to design of anchorage cable in practical projects.

Key words: non-homogeneous rock, anchorage cable, shearing stress, interface, transverse isotropy

CLC Number: 

  • TU 470
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