中国铁道科学2018，Vol.39Issue(1)：66-74,9.DOI:10.3969/j.issn.1001-4632.2018.01.09
基于分离迭代和耦合时变的列车—轨道—桥梁耦合系统高效动力分析混合算法
An Efficient Hybrid Algorithm for Dynamic Analysis of Train-Track-Bridge Coupled System Based on Separation Iterative Method and Coupled Time-Varying Method
摘要
Abstract
In order to increase the computational efficiency for the dynamic analysis of the train-track-bridge coupled system,a hybrid algorithm was proposed based on the Coupled Time-varying Method (CTM) and the Separation-Iteration Method (SIM).The train-track-bridge coupled system was separated into the train-track subsystem and the bridge subsystem by hybrid algorithm.The stiffness coefficient matrix of train-track subsystem was updated at every time step according to train position,thus the traintrack subsystem is time-varying.The dynamic coefficient matrix of bridge subsystem remained unchanged during the whole dynamic analysis process.The train-track subsystem and bridge subsystem were coupled by the equilibrium iteration of the forces between the rail and the bridge.The feasibility of hybrid algorithm was validated by comparing field data of a 32 m simply-supported beam bridge on Shuo-Huang heavy haul railway and the analysis results calculated by the hybrid algorithm.The dynamic responses of a train passing through the Longmen Yellow River Bridge on Meng-Hua heavy haul railway were calculated by the CTM and the hybrid method,respectively.Results show that,by applying the same time step,the two methods have the same computational accuracy,but the hybrid algorithm is more efficient than CTM.The computational time of the hybrid method is 75 ％ shorter than that of the CTM.关键词
列车轨道桥梁耦合系统/动力学计算/动力响应/混合算法/分离迭代法/耦合时变法/计算效率Key words
Train-track-bridge coupled system/Dynamic calculation/Dynamic response/Hybrid algorithm/Separation iterative method/Coupled time-varying method/Computational efficiency分类
交通工程引用本文复制引用
朱志辉,龚威,张磊,余志武,蔡成标..基于分离迭代和耦合时变的列车—轨道—桥梁耦合系统高效动力分析混合算法[J].中国铁道科学,2018,39(1):66-74,9.基金项目
国家重点研发计划项目(2017YFB1201204) （2017YFB1201204）
国家自然科学基金资助项目(51378511,51678576) （51378511,51678576）
中南大学牵引动力国家重点实验室开放课题(TPL1601) （TPL1601）
