EFFECT OF SHAPE, SIZE AND JOINT RIGIDITY ON UPLIFT CAPACITY OF PLATE ANCHORS

Abstract

A plate anchor consist of an arrangement in which plate is attached to rod at one end and this end is embedded in to soil while another end is subject to load. Horizontal plate anchors are used to resist uplift force generating in transmission towers, anchored bulkhead, supports of pipelines running under water and in structures near shore. Plate anchors are most suitable and economical solutions in the above situations. Forces in plate anchor is quite different as compared to compressive force in footings, piles and stone columns, so these has special application of resisting uplift forces. This uplift resistance of these anchors in sand depends mainly upon angle of internal friction of sand, relative density of sand, shape of anchor plate, geometry of anchor plate and depth of embedment. In this study, A series of pull out tests has been carried on plate anchors with different shape and size embedded in sand at different depths. Their pull-out capacities have been compared by varying shape, size, embedment depth and joint rigidity.