Dynamic track-soil interaction——calculations and measurements of slab and ballast tracks
[轨道-土体动态相互作用——板式轨道和有砟轨道的计算和测量]作者机构:Federal Institute of Material Research and TestingBerlin 12200Germany
出 版 物:《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报(英文版)A辑(应用物理与工程))
年 卷 期:2021年第22卷第1期
页 面:21-36页
核心收录:
学科分类:12[管理学] 08[工学] 0810[工学-信息与通信工程] 083002[工学-环境工程] 1204[管理学-公共管理] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0837[工学-安全科学与工程] 0805[工学-材料科学与工程(可授工学、理学学位)] 0814[工学-土木工程] 0812[工学-计算机科学与技术(可授工学、理学学位)] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程]
主 题:Slab track Ballast track Train passage Hammer impact Track-soil interaction
摘 要:The dynamic behaviour of slab and ballast tracks was investigated using measurements and *** impacts and train passages were analysed and measurements were made using geophones(velocity transducers)which had been time-integrated to *** calculations were carried out in the frequency-wavenumber domain for multi-beamon-continuous soil *** characteristics of the different tracks and track elements were established in theory and by *** frequency-dependent compliances(displacement transfer functions)showed clear rail-on-railpad resonances or highly damped track-soil *** to the rail and sleeper,the track slab had much lower *** slab track usually had the highest rail amplitudes due to soft *** passage yielded track displacements which were a superposition of the axle loads from the two neighbouring axles of a bogie and from the two bogies of two neighbouring *** global behaviour was characteristic of the track slab of the slab track,whereas the rails of the slab and the ballast tracks behaved more locally with only one bogie of *** measurements agreed very well with the theory of continuous soil in the case of the six measured slab tracks and acceptably well for the six measured ballast *** measurements allowed us to find appropriate model parameters and to check the *** example,the Winkler model of the soil was found to be less appropriate because it reacted more locally.