Abstract: - The rapid growth of transportation infrastructure and increasing demand for safe and durable bridge structures have made it essential to study the behaviour of bridge foundations under dynamic loading conditions. The present research work focuses on the finite element analysis and design of bridge pier pile foundation subjected to dynamic moving load and induced vibration. The study aims to evaluate the structural performance of bridge systems considering seismic loading, moving loads, and soil–structure interaction (SSI) using advanced numerical techniques. A three-dimensional finite element model of the bridge structure along with pile foundation and surrounding soil is developed using ANSYS software. The analysis is carried out by applying time-history seismic loading corresponding to different earthquake zones (Zone III, IV, and V). In addition to seismic loads, the effect of dynamic moving loads is also considered to simulate real traffic conditions. The behaviour of the structure is analysed in terms of displacement, stress distribution, bending moment, shear force, vibration characteristics, and factor of safety. A comparative study is performed using three different materials, namely structural steel, carbon fibre reinforced steel, and epoxy fibre reinforced steel, to determine the most suitable material for pile foundation under dynamic conditions. The results indicate that the bridge structure exhibits nonlinear behaviour under seismic loading, with deformation increasing as the intensity of the earthquake increases. Maximum displacement and stress are observed in structural steel, while carbon fibre reinforced steel shows minimum deformation, better stress distribution, and higher energy absorption capacity. The pile foundation analysis reveals that soil–structure interaction plays a significant role in reducing vibration and improving stability. The maximum stress concentration occurs at the pile–soil interface, and the displacement increases with increasing seismic intensity. The factor of safety is found to be 2.1 for structural steel, 3.1 for epoxy fibre reinforced steel, and 3.8 for carbon fibre reinforced steel, indicating that carbon fibre reinforced material provides the highest safety and reliability.
Patle et al. (Mon,) studied this question.