Evaluation of Design Methods for Vertical Anchor Plates

Abstract

Design methods for vertical anchors subjected to horizontal pullout forces are reviewed. Theoretical predictions are compared with results from conventional tests on 2 in. (50 mm) models and centrifugal tests representing 39.4 (1 m) prototypes in dense sand. Good agreement is found between force coefficients from theories for 39.4 in. (1 m) anchors, provided a mobilized friction angle in the mass is used in the analyses. A lack of consistent agreement for 2 in. (50 mm) anchors is attributed to inherent difficulties in obtaining reliable data for small models at low stress levels. Anchor geometry is adequately accounted for by a theoretical shape factor derived by the writers.