Rock and Soil Mechanics ›› 2018, Vol. 39 ›› Issue (S2): 202-208.doi: 10.16285/j.rsm.2018.1242

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A method for calculating ultimate pullout force of recoverable under-reamed prestressed anchor cable

WANG Zhe1, WANG Qiao-kan1, MA Shao-jun2, XUE Yi3, XU Si-fa1   

  1. 1. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China; 2. Zhejiang Province Institute of Architectural Design and Research, Hangzhou, Zhejiang 310006, China; 3. Zhejiang Poly Real Estate Development Co., Ltd., Hangzhou, Zhejiang 310016, China
  • Received:2018-07-10 Online:2018-12-21 Published:2019-01-04

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Abstract: Based on the limit equilibrium theory, a new formula is proposed to calculate the ultimate pullout force of anchor cable. The influence of soil pressure on distal of the bonding segment is considered in the formula. Prestressed anchor cables in three practical engineering cases are investigated. The values of ultimate pullout force calculated by the formula proposed are compared with those by the existing formula and measured values, respectively. The results show that distal soil pressure of the bonding segment in cohesive soil has evident influences on ultimate pullout force of anchor cable. Also it is shown that the ultimate pullout force can be calculated by both the formula of this paper and the existing formula when anchor cable used in sandy soil; but it should use the formula of this paper when anchor used in cohesive soil.

Key words: anchor cable, under-reamed, recoverable, ultimate pullout force

CLC Number: 

  • TU473
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