Analyzing the Influence of Soil-Structure Interaction on High-Speed Rail Embankments: A Plaxis 3D Simulation Study

Tokirhusen I. Shaikh; Manish V. Shah

doi:10.37591/ttea.v10i1.7070

Abstract

The introduction of high-speed rail (HSR) in India has seen an increase in travel demand and areduction in travel time. However, the stability and deformation characteristics of railwayembankments and soil structure interaction behavior under high-speed design requirements forIndian soil conditions need to be predicted using simplified 3-D finite element modelling. Theobjective of this research is to analyze the rigid ballast-less and flexible ballast-based high-speed railtrack embankments for various critical conditions using software. These conditions include staticcondition, moving train condition, sudden brake application, and derailment case. The studyconsiders input parameters such as soil type, thickness of the relevant strata, unit weight, young’smodulus, Poisson’s ratio, undrained cohesion, friction angle, dilatancy angle, modulus of subgradereaction, design speed, and other relevant data. The guidelines of Eurocode 1, Eurocode 7, Eurocode3, NHSRCL feasibility report are followed in this study. The analysis aims to predict the stability anddeformation characteristics of railway embankments and soil structure interaction behavior forIndian soil conditions under high-speed design requirements. The results of this study will aid indesigning safe and efficient high-speed rail tracks in India. Overall, this research provides valuableinsights into the design and construction of HSR tracks, and the study's findings can contribute to theadvancement of transportation infrastructure in India.