铁道科学与工程学报2025，Vol.22Issue(11)：4761-4771,11.DOI:10.19713/j.cnki.43-1423/u.T20250194
高速铁路震致残余不平顺简化计算方法研究
Simplified calculation method for seismic-induced residual track irregularity of high-speed railways
摘要
Abstract
Seismic events significantly compromise track surface smoothness in high-speed railway track-bridge systems,posing substantial risks to operational safety.Post-earthquake residual track irregularity serves as a critical parameter for evaluating railway safety after seismic events.Consequently,accurate assessment of seismic-induced residual track irregularity is essential for effective post-earthquake management of high-speed railway infrastructure.This study established a simplified method for calculating seismic-induced residual irregularities in high-speed railway bridges.A finite element model comprising a 7-span simply supported bridge with China Railway Track System II(CRTS II)ballastless track was constructed using OpenSees.The study incorporated 200 seismic records from the PEER strong ground motion database,categorized by site classification and calibrated to various peak ground acceleration(PGA)levels.Through nonlinear time history analysis,a comprehensive database of seismic-induced peak and residual track lateral irregularities was established.Distribution characteristics of the irregularity samples were analyzed using the Kolmogorov-Smirnov method and Shapiro Wilk metrhod,enabling determination of irregularity thresholds across diverse site conditions and PGA intensities.Based on this analysis,a simplified calculation approach for the seismic-induced residual irregularity ratio was formulated for four distinct site classifications.The findings demonstrate that both peak and residual track irregularities under stochastic seismic excitation exhibit normal distribution properties and increase proportionally with PGA magnitude.Analysis further revealed that irregularity amplitudes correlate directly with site soil softness.Notably,an approximately linear relationship was identified between peak and residual irregularity amplitudes,facilitating efficient assessment of residual irregularity upper limits through peak irregularity evaluation.关键词
高速铁路/桥梁工程/轨道不平顺/地震动强度/场地条件Key words
high-speed railway/bridge engineering/track irregularity/seismic motion intensity/site conditions分类
交通工程引用本文复制引用
彭康,彭梦颖,周旺保,张以沫,刘昊,熊利军..高速铁路震致残余不平顺简化计算方法研究[J].铁道科学与工程学报,2025,22(11):4761-4771,11.基金项目
国家自然科学基金资助项目(52578619,52178180) （52578619,52178180）
湖南省科技人才托举工程(2022TJ-Y10) （2022TJ-Y10）
中南大学前沿交叉研究项目(2023QYJC006) （2023QYJC006）
澳门特别行政区科学技术发展基金资助项目(SKL-IOTSC(UM)-2024-2026) （SKL-IOTSC(UM）
