PULLOUT RESISTANCE OF SOIL ANCHORS IN COHESIONLESS SOIL UNDER VARYING VELOCITIES BY EXPERIMENTAL METHODS

Open Access
Author:
Bychkowski, Michael Edward
Graduate Program:
Civil Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
July 13, 2016
Committee Members:
  • Gordon Patrick Warn, Thesis Advisor
  • Tong Qiu, Committee Member
  • Zoltan Ivan Rado, Committee Member
Keywords:
  • Pullout
  • Soil anchors
  • Velocity
  • Cohesionless
  • Resistance
  • Depth
  • Diameter
Abstract:
An examination of the literature in respect to buried soil anchors shows an existing gap in parameters studied. An in depth study on soil anchors subjected to varying pullout velocities has yet to be studied in detail. This thesis outlines an experimental program to test anchors of two different diameters at various embedment depths and pullout velocities using symmetry. The analyzed data suggests the ultimate pullout resistance is rate dependent and is further influenced by diameter size and embedment depth. Anchors embedded at deeper depths with the larger diameter size showed to be more influenced by pullout velocities than those at shallower depths. Therefore, anchors pulled at high velocities should be considered during design process. Furthermore, results from this study can be used to update existing models to account for strain rate effects in addition to validate and calibrate new numerical models to include anchor foundations in potential applications that are subjected to dynamic loading.