Assessment for Vertical Earth Pressure of Roadbeds Applied to Slab Track Structure by Real-scale Loading Tests

실대형 재하시험을 통한 슬래브궤도 노반의 연직토압 평가

Recently, concrete slab track is mostly used to satisfy requirements for safety of high-speed train operation and economical efficiency of maintenance. Due to structural characteristics of ballast track structures, roadbeds under the ballast experience a state of high stress. In case of slab track structures, however, its roadbeds place on a condition of low stress less than roadbeds of ballast track structures as increasing of the loading area. In this study, vertical earth pressure under slab track structures was investigated through real-scale loading tests and theoretical analysis to compare with each other.