Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (3): 426-430.DOI: 10.12068/j.issn.1005-3026.2018.03.024

• Resources & Civil Engineering • Previous Articles     Next Articles

Mechanical Response of Anchored Pile Supporting Deep Excavation Influenced by Local Anchor Failure

HAN Jian-yong, ZHAO Wen, JIA Peng-jiao, CHEN Yang   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2016-11-28 Revised:2016-11-28 Online:2018-03-15 Published:2018-03-09
  • Contact: ZHAO Wen
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Abstract: Under the engineering background of anchored pile supporting excavation in sand layers, numerical models were established using the FEM program Plaxis to simulate excavations under two local anchor failure conditions of one-row and two-row anchor cable failures. The effect of prestressed anchor failures on mechanical response of retaining structures was studied. Besides, the load transfer response to the anchor failures was revealed. The results obtained from the numerical simulations show that the influence of two-row anchor cable failure on deformation and internal force of retaining structure was larger than that of one-row anchor cable failure. Under the most unfavorable condition of group anchor failures, the bending moments and displacements of retaining piles were 1.66 and 1.74 times of those under the normal construction condition, respectively, and the increase ratio of the bending moment of the retaining piles was the crucial determining factor of the piles failure.

Key words: anchored pile supporting, anchor failure, mechanical response, load transfer, excavation stability, deep excavation

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