SOME STUDIES ON ANCHOR PLATES IN SAND

Abstract

A number of laboratory tests on pullout resistances of square and rectangular model anchors made of aluminium plates in loose sand have been taken up for this investigation. The main purpose of this paper is to present some recent model test results for square and rectangular plates in sand at constant compactive effort and outlines the pullout resistance of anchor plates with a vertical axis of different sizes and a load displacement relationship of the model tests. Moreover, the ultimate anchor resistance has been expressed in terms of nondimensional force coefficient and breakout factor. For rectangular and square anchors, the breakout factor increases with relative depth of embedment ratio to a certain extent and then tends to approximately constant at greater depths. The critical embedment ratio for rectangular anchors is about five while there is no meaningful results in case of square anchors. An attempt has also been focussed to understand the basic behavior of embedded anchors. The depth of embedment, size of anchors and the relative density of the sand are also important factors in this investigation.