华中科技大学学报（自然科学版）2025，Vol.53Issue(2)：47-52,87,7.DOI:10.13245/j.hust.250880
基于随机场理论的无砟轨道荷载效应分析研究
Research on load effect analysis of slab track based on random field theory
摘要
Abstract
To simulate the internal discreteness of the slab track structures and accommodate more authentic operational scenarios,the establishment of a refined finite element model for the random field of slab track materials was achieved by integrating the theories of random fields,ABAQUS,Matlab,and Python.Subsequently,relevant subroutines were developed to explore the random distribution characteristics of load effects on concrete components of the slab track.The calculated results reveal that the Latin hypercube sampling presents a more efficient and objective sampling approach,enhancing the model's ability to accurately portray the random distribution relationship of load effects on the slab track.As the variation coefficient of concrete material parameters increases,all load effects develop toward the most unfavorable situation.Specifically,with an increase in the variation coefficient from 0.02 to 0.10,the maximum longitudinal tension stress of the slab exhibits a significant rise from 1.38 MPa to 1.76 MPa.关键词
无砟轨道/随机场理论/荷载效应/拉丁超立方抽样/数值模拟Key words
slab track/random field theory/load effect/Latin hypercube sampling/numerical simulation分类
交通运输引用本文复制引用
任娟娟,张琦,邓世杰,刘延龙..基于随机场理论的无砟轨道荷载效应分析研究[J].华中科技大学学报（自然科学版）,2025,53(2):47-52,87,7.基金项目
国家重点研发计划资助项目(2023YFB2604301) （2023YFB2604301）
国家自然科学基金资助项目(52278461,52308467) （52278461,52308467）
高速铁路无砟轨道设计与维护四川省青年科技创新研究团队项目(2022JDTD0015). （2022JDTD0015）
