Analysis of Uplift Capacity and Non Linear Behaviour of Failure Surface on Single Belled Anchor Pile in Sand and Layered Soils

Abstract

The compressive strength of soil and related theories are well defined in comparison to the tensile strength of soil, which is appreciably less that can be safely ignored as negligible for safe design. Among different types of anchors, belled anchor piles are generally suggested by geotechnical engineers when foundations have to provide both considerable load-bearing capacity and tension anchorage for uplift resistance of foundations in on-land and off-shore structures. For radar tower, television tower, power pole, road-side sign posts and outdoor sign pools, imbalanced horizontal forces are mainly due to severe wind velocity, and in such cases, the resultant uplift load is more than their self-weight. Silos, overhead water tank and tall chimneys are not only concerned about large compressive load transmission in subsoil profile, but also governed by uplift or over-turning load and moment considerations. newlineThis present experimental study explains the uplift capacity of single belled anchors using 3D model, performed in sand and locally available silty-clay deposit to evaluate the contribution of embedment ratios of 3, 4 and 5, diameter ratios of 0.28, 0.33, 0.38 and 0.46, and bell angles of 45°, 54°, 63° and 72°. Two different types of sands and locally available silty-clay are used as the foundation material to prepare the buried media.