Understanding the anchor’s behaviour when placed as single, double or multiple in soil and predicting the ultimate capacity under uplift loading are essential in foundation design. In this study, the undrained uplift capacity of the anchor is evaluated using finite element (FE) method for single, double, and multiple strip anchors embedded in clay at different depths. The vertical uplift loading conditions are assigned to a rigid anchor plate which is rough at the top and smooth at bottom to evaluate the uplift capacity at ultimate failure conditions. This study considers only the contribution of soil cohesion. Other factors like installation, flexibility of anchor, self-weight, etc., are not considered. The present study results are compared with those available in the literature. The present study FE results revealed that the behaviour of anchor or anchors under uplift loading depends on the anchor embedment depth, the properties of soil and spacing between the anchors. This analysis provides beneficial results, which are represented as normalized design charts to benefit its usage in the professional practice of soil anchor problem.

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FE Evaluation of Undrained Uplift Capacity of Single, Double, and Multiple Strip Anchors in Clay

  • Jaymin M. Hadiyol,
  • Jitesh T. Chavda

摘要

Understanding the anchor’s behaviour when placed as single, double or multiple in soil and predicting the ultimate capacity under uplift loading are essential in foundation design. In this study, the undrained uplift capacity of the anchor is evaluated using finite element (FE) method for single, double, and multiple strip anchors embedded in clay at different depths. The vertical uplift loading conditions are assigned to a rigid anchor plate which is rough at the top and smooth at bottom to evaluate the uplift capacity at ultimate failure conditions. This study considers only the contribution of soil cohesion. Other factors like installation, flexibility of anchor, self-weight, etc., are not considered. The present study results are compared with those available in the literature. The present study FE results revealed that the behaviour of anchor or anchors under uplift loading depends on the anchor embedment depth, the properties of soil and spacing between the anchors. This analysis provides beneficial results, which are represented as normalized design charts to benefit its usage in the professional practice of soil anchor problem.