Structures subjected to uplift and lateral loads, like transmission line towers, compound walls, patrolling structures, windmills, sheet pile walls, retaining walls, etc. are often provided with anchors as a foundation system to withstand these loads. In this study, the undrained uplift capacity of circular and strip anchors embedded in layered clay is evaluated using the finite element (FE) method. The present study FE results are validated by comparing them with the available numerical results, and then undrained uplift capacity factors for layered clay are evaluated. Two types of layered clays are considered in the study: (1) hard clay over soft clay and (2) soft clay over hard clay. The undrained uplift capacity factor is determined for various H/B ratios of anchor in clayey soil considering different clay layer thickness ratios. The FE results of this study are represented as design charts and tables. The study provides normalised design charts for engineering calculations and the design of the strip and circular anchors for structures subjected to lateral and uplift loads.

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FE Evaluation of Undrained Uplift Capacity of Strip and Circular Anchors in Layered Clays

  • Jaymin M. Hadiyol,
  • Jitesh T. Chavda

摘要

Structures subjected to uplift and lateral loads, like transmission line towers, compound walls, patrolling structures, windmills, sheet pile walls, retaining walls, etc. are often provided with anchors as a foundation system to withstand these loads. In this study, the undrained uplift capacity of circular and strip anchors embedded in layered clay is evaluated using the finite element (FE) method. The present study FE results are validated by comparing them with the available numerical results, and then undrained uplift capacity factors for layered clay are evaluated. Two types of layered clays are considered in the study: (1) hard clay over soft clay and (2) soft clay over hard clay. The undrained uplift capacity factor is determined for various H/B ratios of anchor in clayey soil considering different clay layer thickness ratios. The FE results of this study are represented as design charts and tables. The study provides normalised design charts for engineering calculations and the design of the strip and circular anchors for structures subjected to lateral and uplift loads.