中南大学学报（自然科学版）2024，Vol.55Issue(3)：1231-1240,10.DOI:10.11817/j.issn.1672-7207.2024.03.033
减基法在轨道-隧道-土体系统谐响应分析中的应用
Application of reduced basis method in harmonic analysis of track-tunnel-soil system
摘要
Abstract
In order to improve the prediction efficiency of railway-induced vibration,the harmonic analysis method of the track-tunnel-soil system was proposed based on the reduced basis method.The reduced basis method was applied in the harmonic analysis of the track-tunnel-soil system.Combining the finite element method and the theoretical analytical method,the resampling calculation of the frequency response function of the system in the original solution domain was realized on the basis of the existing calculation frequency samples.The proposed method in this paper was compared with the finite element method and linear interpolation method.The results show that in any models with different scales,the calculation errors of the proposed method are obviously lower than those of linear interpolation.Meanwhile,compared with the finite element method,the proposed method can maintain high calculation accuracy and efficiency under different threads.With the increase of model scale,the acceleration ratio of the proposed method is higher than that of the finite element method,and the maximum acceleration ratio can exceed 2 000.关键词
轨道交通/环境振动/振动预测/传递函数/减基法Key words
rail transit/environmental vibration/vibration prediction/transfer function/reduced basis method分类
交通工程引用本文复制引用
王森,辛涛,王朋松,杨燚,戴传青,滕明利..减基法在轨道-隧道-土体系统谐响应分析中的应用[J].中南大学学报（自然科学版）,2024,55(3):1231-1240,10.基金项目
国家重点研发计划项目(2023YFB2604300) （2023YFB2604300）
111引智基地项目(B20040)(Project(2023YFB2604300)supported by the National Key Research and Development Program of China （B20040）
Project(B20040)supported by the 111 Project) （B20040）
