Uplift capacity of plate anchors in sloped clayey ground

Plate anchors are the popular type of anchors used in civil engineering construction both on land and offshore. In this paper, the uplift capacity of plate anchor in a sloped clayey ground has been brought out with the help of an experimental programme, carried out on a 50 mm diameter model plate anchor. The tests have been conducted at slopes of 0°, 15°, 30° and 45°. From the test results, it is found that in the case of shallow anchor, as the slope is increasing from 0° to 45°, there seems to be a reduction in uplift capacity. Simple expressions are suggested to arrive at the uplift capacities in sloped ground. The mechanisms involved in the reduction of capacity with slope are explained based on the observed behaviour.