Numerical analysis of high‑speed railway slab tracks using calibrated and validated 3D time‑domain modelling

作     者：A.F.Esen O.Laghrouche P.K.Woodward D.Medina‑Pineda Q.Corbisez J.Y.Shih D.P.Connolly A.F.Esen;O.Laghrouche;P.K.Woodward;D.Medina-Pineda;Q.Corbisez;J.Y.Shih;D.P.Connolly

作者机构：Institute for High‑Speed Rail and System IntegrationUniversity of LeedsLeeds LS29JTUK Institute for Infrastructure and EnvironmentHeriot-Watt UniversityEdinburgh EH144ASUK Alstom TransportSaint‑OuenFrance Birmingham Centre for Railway Research and EducationUniversity of BirminghamBirmingham B152TTUK 

出 版 物：《Railway Engineering Science》 (铁道工程科学（英文版）)

年 卷 期：2024年第32卷第1期

页      面：36-58页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Engineering and Physical Sciences Research Council (EPSRC) is also acknowledged for funding this work under Grant Number EP/N009207/1 

主　　题：High-speed railways Slab track New ballastless track Ballasted track Critical speeds Finite element modelling Calibration of numerical models 

摘      要：Concrete slabs are widely used in modern railways to increase the inherent resilient quality of the tracks,provide safe and smooth rides,and reduce the maintenance *** this paper,the elastic performance of a novel slab trackform for high-speed railways is investigated using three-dimensional finite element modelling in *** is then compared to the performance of a ballasted ***,slab and ballasted track models are developed to replicate the full-scale testing of track *** the models are calibrated with the experimental results,the novel slab model is developed and compared against the calibrated slab track *** slab and ballasted track models are then extended to create linear dynamic models,considering the track geodynamics,and simulating train passages at various speeds,for which the Ledsgard documented case was used to validate the *** travelling at low and high speeds are analysed to investigate the track deflections and the wave propagation in the soil,considering the issues associated with critical *** train loading methods are discussed,and the most practical approach is retained and ***,correlations are made between the geotechnical parameters of modern high-speed rail and conventional *** is found that considering the same ground condition,the slab track deflections are considerably smaller than those of the ballasted track at high speeds,while they show similar behaviour at low speeds.