Analysis of Laterally Loaded Fixed-Headed Single Pile in Multilayered Soil Using P-Y Approach

Structures resting on pile foundation are generally subjected to lateral loads and moments acting on the pile head in addition to vertical loads. Horizontal forces originate due to wind, traffic, earth pressure, water wave, and seismic forces or their combination. Analysis and design of piles subjected to lateral forces and moments is very important for ensuring the stability and serviceability of structure. In designing laterally loaded piles, the pile head deflection is very important which depends on soil type, pile installation, pile flexibility (or pile stiffness), loading condition, and type of fixity of pile with pile cap. The flexural behavior of a pile is a function of the interaction between the soil and the pile and is governed by the properties of both. In the present study, lateral load behavior of single piles in layered soils, i.e., alternate layer of clay and sand is conducted. The analysis is carried out considering fixed-headed pile and floating tip at the base. Since soil response is complex idealized models are used for the analysis. Analysis based on generated nonlinear P-Y curves representing the soil behavior using OASYS ALP v19.2 has been elucidated. Flexural response of the pile along with lateral pile capacity, moment and length of fixity is estimated considering all the analysis with different pile diameters.