PULLOUT CAPACITY OF ANCHOR PLATES SUBJECTED TO INCLINED LOADING

Abstract

The study aims to provide with technical support for the design of offshore structures supported by anchor plates. Specifically, the study presented here provide the bearing capacity of plate anchors embedded in clays and sand to withstand the forces transmitted by inclined loading. To find the bearing capacity of these anchor plate a finite element simulation has been carried out using PLAXIS 3D. The behavior of anchor plate in clay and sand has been modelled using Mohr Coulomb model. The results are presented in the form of charts which can be used in hand calculation for estimating the bearing capacity. The bearing capacity of different shapes is found out. The effect of elasticity of soil, unit weight and all the parameters are compiled and the results are shown in chart form hence this can be used as a solution to all the soil problem. The problem has been modelled and introduced in the software PLAXIS 3D in which different condition has been analyzed. In this research immediate breakaway and no break way condition has been shown for the vertical embedded anchors and immediate breakaway condition has been shown for all the other conditions. This condition is nothing but it defines the interaction between the soil and the plate has been considered in this also called as vented and attached condition respectively. In the first condition the plate anchor is separated from the soil just to the loading condition. Therefore, this is the situation where no suction or adhesion occurs between the soil and the plate. Whereas, the plate and the soil are fully bonded and the plate is in contact with the soil all the times in the attached condition. Cases are analysed with different shape of plate and different embedment depth at different inclined loading for the vented conditions to test the behavior of the plate in all these different conditions. The pullout capacity for all of this condition has been reported and compared with previous available results. The results are shown for sand and clay. And the effort has been made to compile all the parameters that affect the pullout behavior and to take into account all the parameters in a single term