典型文献
Safety evaluation of a vehicle-bridge interaction system using the pseudo-excitation method
文献摘要：
A method for analysing the vehicle-bridge interaction system with enhanced objectivity is proposed in the paper,which considers the time-variant and random characteristics and allows finding the power spectral den-sities(PSDs)of the system responses directly from the PSD of track irregularity.The pseudo-excitation method is adopted in the proposed framework,where the vehicle is modelled as a rigid body and the bridge is modelled using the finite element method.The vertical and lateral wheel-rail pseudo-excitations are established assuming the wheel and rail have the same displacement and using the sim-plified Kalker creep theory,respectively.The power spectrum function of vehicle and bridge responses is cal-culated by history integral.Based on the dynamic respon-ses from the deterministic and random analyses of the interaction system,and the probability density functions for three safety factors(derailment coefficient,wheel unload-ing rate,and lateral wheel axle force)are obtained,and the probabilities of the safety factors exceeding the given limits are calculated.The proposed method is validated by Monte Carlo simulations using a case study of a high-speed train running over a bridge with five simply supported spans and four piers.
文献关键词：
中图分类号：
作者姓名：
Nan Zhang;Ziji Zhou;Zhaozhi Wu
作者机构：
School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China
文献出处：
引用格式：
[1]Nan Zhang;Ziji Zhou;Zhaozhi Wu-.Safety evaluation of a vehicle-bridge interaction system using the pseudo-excitation method)[J].铁道工程科学（英文）,2022(01):41-56
A类：
Kalker,derailment,unload
B类：
Safety,evaluation,vehicle,bridge,interaction,system,using,pseudo,method,analysing,enhanced,objectivity,proposed,paper,which,considers,variant,random,characteristics,allows,finding,power,spectral,sities,PSDs,responses,directly,from,track,irregularity,adopted,framework,where,modelled,rigid,body,finite,element,vertical,lateral,wheel,excitations,are,established,assuming,have,same,displacement,plified,creep,theory,respectively,spectrum,by,history,integral,Based,dynamic,deterministic,analyses,probability,density,functions,three,safety,factors,coefficient,rate,axle,force,obtained,probabilities,exceeding,given,limits,calculated,validated,Monte,Carlo,simulations,case,study,high,speed,train,running,over,five,simply,supported,spans,four,piers
AB值：
0.529981
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
