A Model Study on Batter Pile Group Subjected to Lateral Loading in Sandy Soil

Single pile and groups are subjected to lateral loads due to impact of ship, wave action, wind and earthquake forces, so it is important to know the Lateral load resistance of a pile foundation. Modal tests are conducted to determine the lateral loading capacity of vertical and batter piles. The tests are conducted in cohesion less uniform fine sand. For batter piles the angle of pile is kept as 25â—¦. After conducting the tests it is observed to that the negative batter piles showed more resistance to lateral loads of a pile for a constant deflection subjected to later loads and positive batter piles showed less resistance as compared to pile. Similar effect is observed in the case of pile groups. The experimental result conducted show more deflections as compared to theoretical relations given by various researchers. Normally vertical piles are used in foundation to take vertical loads and small lateral loads. When the horizontal load per pile exceeds the limiting value, suitable batter piles are used in combination with vertical piles. Batter piles are also known as inclined piles or rank piles. An experimental investigation of the shaft resistance of single vertical and batter piles pushed into sand is conducted. A prototype laboratory setup is designed for testing relatively large model piles, inclined at an angle that varied between zero and 30degrees with the vertical. Two model piles having diameters of 38 and 76 mm are tested at a ratio of the pile's length to diameter up to 40, and subjected to axial compression loading. The pile models are instrumented to allow direct measurements of the shaft resistance. A theoretical model is developed to take into account the asymmetrical earth pressure distribution around the pile shaft, the level of mobilization of the angle of friction between the pile shaft and the sand, and the pile diameter. The results predicted by the theory developed agreed well with the experimental results of the present investigation as well as other experimental and field results available in the literature.