Effect of Soil-pile Interaction on Inclined Pile Group Subjected to Axial and Lateral Loads

High-rise RCC buildings are generally subjected to a combination of gravity and lateral loads. The pile foundation is generally used in high-rise buildings to transfer higher axial loads to the soil at greater depths. Most of the pile systems are studied by considering either axial loads or lateral loads. In practice, groups of piles with different patterns are used by considering the spacing between the piles to avoid the overlapping of pressure bulbs. Inclination of piles leads to an increased resistance to lateral and vertical forces as they produce partial lateral resistance from their axial capacity, hence these piles are more efficient than vertical piles in resisting lateral loads. In the present study, various combinations of inclined piles have been analyzed under the effect of axial and lateral loads for high-rise buildings. Four different angles of inclination are considered for inclined piles with three distinct percentages of pile group combinations to find the optimum angle of inclination and optimum percentage of pile group combination. To study the effect of soil-structure interaction (SSI), a comparison of displacements has been carried out. Inclined pile groups produced better results in terms of vertical and lateral displacements as compared to that of vertical pile groups. The results revealed that 25⁰ inclinations of piles reduce the lateral and vertical displacements to a greater extent.