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地学领域高质量科技期刊分级T2区（2023）

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Volume 41 Issue 2
Mar.  2022
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Article Navigation >  Bulletin of Geological Science and Technology  > 2022  >  41(2): 282-289
Wang Shangshang, Chen Fu, Li Dongxian, Lin Houlai, Liu Zhiliang, Li Liang. Influence of anchor uncertainty on the failure probability of reinforced slope[J]. Bulletin of Geological Science and Technology, 2022, 41(2): 282-289. doi: 10.19509/j.cnki.dzkq.2022.0055
Citation: Wang Shangshang, Chen Fu, Li Dongxian, Lin Houlai, Liu Zhiliang, Li Liang. Influence of anchor uncertainty on the failure probability of reinforced slope[J]. Bulletin of Geological Science and Technology, 2022, 41(2): 282-289. doi: 10.19509/j.cnki.dzkq.2022.0055
shu

Influence of anchor uncertainty on the failure probability of reinforced slope

doi: 10.19509/j.cnki.dzkq.2022.0055
  • Received Date: 19 Apr 2021
    Abstract
  • To explore the influence of anchor uncertainty on the failure probability of reinforced slopes, the uncertainty of anchors is considered through the following two approaches: one assumes that the friction force on the unit surface of the contact surface between the anchor and the anchor solid is a log-normal distribution variable, and the other introduces the attenuation coefficient of the friction force on the unit surfaceof the contact surface between the anchor and the anchor solid to consider the uncertainty of the anchor during construction and maintenance. The limit equilibrium method and Monte Carlo sampling method are used to calculate and compare the variation curve of the failure probability of the reinforced slope through two approaches.Finally, the effectiveness of the proposed method is validated against an example of the slope retaining project of the Shenzhen Holiday Inn foundation pit.The results show that the failure probability of the reinforced slope increases gradually with the increase range in the coefficient of variation of unit surface friction on the contact surface between the anchor and the anchor solid under the same soil statistical parameters, and the increase range is between 18.03% and 41.90% for the first approach. For the second approach, the failure probability of the reinforced slope increases rapidly with the decrease in the attenuation coefficient of the anchor ranging from 1.0 to 0.0, and the increase range is between 55.64% and 124.90%. Under the same attenuation coefficient, the failure probability of the reinforced slope increases with the increase in the number of attenuation anchors. The research results provide decision support for the management of anchors during construction and operation.

     

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