Stability analysis of Contiguous pile

Abstract

Nowadays in modern construction, large-scale structures with greater heights that need deeper excavation are more popular. At present, the new structures from residential buildings to commercial complexes are keen on adopting basement floors for more underground utilities. These new structures with the need for basements are going for deeper excavation close to the existing buildings surrounding the proposed site of construction. In this case, understanding the behavior of soil profile based on load-bearing capacity, settlement, density, and angle of friction are important to safeguard the adjacent structures from being damaged. Very often deep excavations are supported by pile wall systems. In the literature, it appeared that pile walls are analyzed and designed for active and passive earth pressures. Recent investigations paved the way for my research to consider and implement the contiguous piles based on soil-structure interaction to eradicate soil sliding from the adjacent large buildings during the process of deeper excavation at the worksite. In the present study, the pile is analyzed by considering active and passive earth pressures using Rankine’s theory and Brinch Hansen’s technique respectively. Together with passive earth pressure, horizontal subgrade modulus is also considered using Trezaghi’s concept. With these forces, the stability of the pile is analyzed using the STAAD. Pro software. For parametric study three different pile diameters of 0.45m, 0.6m and 0.9m are considered. Deflections, shear force, and bending moment of the pile are computed. It is inferred that 0.9m diameter pile wall is stable for the given loadings.