›› 2010, Vol. 31 ›› Issue (6): 1813-1816.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of pullout tests of recoverable anchors

PANG You-shi1, 2, 3，LIU Han-long1, 2，GONG Yi-jun2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 3. Engineering Institute of Engineering Crop, PLA Univ. of Sci & Tech., Nanjing 210007, China
  • Received:2008-09-28 Online:2010-06-10 Published:2010-06-25

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Abstract:

In order to study on the anchoring mechanism of the recoverable anchors, the p-s curves are obtained based on the pullout tests of the anchors with various lengths. The test results indicate that the recoverable anchor is a compression anchor and has good mechanical properties, high bearing capacity and good anticorrosive properties as well as it has the advantages of easy to be recovered. When the length of the anchor is large than a critical value, the anchor force will not be increased with the increasing of the length. The anchor does not pollute the underground space, especially adapts to be used in temporary strengthening and instantaneous strengthening. The test results verified the rationality and security of the anchor design. The result of this paper is a valuable reference for the future application of recoverable anchors.

Key words: recoverable, anchor, load-transfer mechanism, critical length, pullout tests

CLC Number: 

  • TD 353.6
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