基于随机有限元的无砟轨道服役可靠性分析

PDF(1637 KB)

振动与冲击 ›› 2019, Vol. 38 ›› Issue (16) : 239-244.

论文

基于随机有限元的无砟轨道服役可靠性分析

李再帏1，张斌2，雷晓燕2，高亮3

作者信息 +

Reliability analysis of ballastless track based on a stochastic finite element method

LI Zaiwei1, ZHANG Bin2, LEI Xiaoyan2, GAO Liang3

Author information +

文章历史 +

摘要

无砟轨道结构的服役可靠性是影响高速列车的行车安全的关键性因素之一。采用随机有限元和人工智能混迭建模的方法分析轨道不平顺对无砟轨道服役的可靠性影响。通过轮轨动力学随机因素构建无砟轨道服役极限状态方程。利用有限元理论建立CRTS II 型板式无砟轨道单元模型和CRH 3 车辆单元模型，采用交叉迭代法进行求解。将实测轨道不平顺数据作为输入，轮轨动力学响应作为输出，采用三层BP神经网络模型进行轮轨关系的映射,并与有限元蒙特卡洛联合建模，计算轨道不平顺作用下的无砟轨道服役可靠性及失效概率。利用实测轨道不平顺数据进行轨道谱的拟合与反演，将混迭建模结果与传统计算结果进行比较分析，结果表明：采用混迭模型计算的结果可以有效地表征无砟轨道服役的可靠性，建议采用此方法进行相应的无砟轨道结构服役安全性检算。

Abstract

The reliability of ballastless track structure is one of the key factors that affect the safety of high-speed trains. The influence of track irregularity on the reliability of ballastless track was analyzed by a hybrid modeling method of stochastic finite element and artificial intelligence. The limit state equation of service safety of ballastless track was established by random factors of wheel rail coupling dynamics. The CRTS II slab track unit model and the CRH 3 vehicle unit model were established by the finite element method and solved by a cross iteration method. The measured track irregularities were taken as input and the wheel rail dynamic response was taken as the output. The three-layer BP neural network model was used to map the wheel-rail relationship which was used to calculate the effect of track irregularities and the reliability index by a finite element Monte Carlo method. The fitting and inversion of the track spectrum were using the measured track irregularities data. The results of the hybrid modeling and the traditional calculation were compared and analyzed. The results indicate that the condition of the ballastless track can be evaluated by the hybrid modeling method, the exist ballastless track structure of high speed railway satisfies the safety requirement of high speed trains. The probabilistic analysis should be considered in track structural design and railway maintenance. 

导出引用

李再帏1，张斌2，雷晓燕2，高亮3. 基于随机有限元的无砟轨道服役可靠性分析[J]. 振动与冲击, 2019, 38(16): 239-244

LI Zaiwei1, ZHANG Bin2, LEI Xiaoyan2, GAO Liang3. Reliability analysis of ballastless track based on a stochastic finite element method[J]. Journal of Vibration and Shock, 2019, 38(16): 239-244

参考文献

[1] 李再帏, 练松良, 刘晓舟. 基于HHT的车辆-轨道系统垂向振动的时频分析. 振动、测试与诊断, 2013, 33(5): 799-803.
LI Zaiwei, LIAN Songliang, LIU Xiaozhou. Time-frequency Analysis of Vehicle-Track vertically Coupling System Based on Hilbert-Huang Transform. Journal of Vibration, Measurement & Diagnosis, 2013, 33(5): 799-803.
[2] 李斌, 刘学毅. 混凝土轨枕抗力的影响因素及其计算方法研究[J]. 铁道学报, 2011, 33(06): 94-98.
LI Bin, LIU Xueyi. Study on the Influence Factors and Calculation Method of Section Resistance of PC Sleeper. Journal of the China Railway Society, 2011, 33(06): 94-98.
[3] 李怀龙, 赵坪锐, 刘志彬. CRTSⅡ型板式无砟轨道轨道板横向可靠度的计算方法研究[J]. 铁道建筑, 2015, (3): 98-102.
LI Huailong, ZHAO Pingrui, LIU Zhibin. Research on calculation method of track slab horizontal reliability for CRTSⅡ slab-type ballastless track, Railway Engineering, 2015, (3): 98-102.
[4] 赵磊, 孙璐. 基于可靠度的 CRTS Ⅱ型无砟轨道板在列车荷载作用下的失效研究[J]. 建筑结构学报, 2016, 37(S1): 328-334.
ZHAO Lei, SUN Lu. reliability-based risk analysis of CRTS Ⅱ ballastless track slab under train load. Journal of Building Structures, 2016, 37(S1): 328-334.
[5] 刘海涛, 王继军, 贾宝红, 等. 高速铁路CRTS Ⅲ 型轨道结构RAMS研究[J]. 铁道建筑, 2017, (1): 34-39.
LIU Haitao, WANG Jijun, JIA Baohong, et al. Research of RAMS (reliability，Availability，Maintainability and Safety) for CRTS Ⅲ Track Structure of High Speed Railway. Railway Engineering, 2017, (1): 34-39.
[6] Shengyang Zhu, Chengbiao Cai, and Wanming Zhai. Interface Damage Assessment of Railway Slab Track Based on Reliability Techniques and Vehicle-Track Interactions[J]. Journal of Transportation Engineering, 2016, 142(10): 04016041-1- 04016041-12.
[7] 欧祖敏, 孙璐. 冻融损伤混凝土的弯曲疲劳寿命可靠性分析[J]. 浙江大学学报(工学版), 2017, 51(6): 1074-1081.
OU Zumin, SUN Lu. Flexural fatigue-life reliability of frost-damaged concrete[J]. Journal of Zhejiang University (Engineering Science), 2017, 51(6): 1074-1081.
[8] Q/CR 9007-2014. 铁路工程结构可靠性设计统一标准[S].
Q/CR 9007-2014. Unified Standard for Reliability Design of Railway Engineering Structures (Trial).
[9] 张明, 金峰. 结构可靠度计算[M]. 北京: 科学出版社, 2015.
ZHANG Ming and JIN Feng. Structural Reliability Computations. Beijing: Science Press, 2015.
[10] 冯青松, 成功, 雷晓燕, 等. 有砟与板式无砟轨道结构对高速铁路地基振动的影响分析[J].振动与冲击, 2015, 34(24): 153-159.
FENG Qingsong, CHENG Gong, LEI Xiao-yan, et al. Influences of ballasted track and slab ballastless track structures on ground vibration of high speed railway[J]. Journal of Vibration and Shock, 2015, 34(24): 153-159.
[11] 雷晓燕. 高速铁路轨道动力学: 模型、算法与应用[M]. 北京: 科学出版社, 2015.
LEI Xiaoyan. High Speed Railway Track dynamic: Model, Algorithm and Application. Beijing: Science Press, 2015.
[12] 邓建, 朱合华. 基于神经网络的岩土工程结构随机有限元分析[J]. 同济大学学报, 2002, 30(3): 269-272.
DENG Jian , ZHU He-hua. Finite Element Monte-Carlo Method Using Neural Networks for Geotechnical Reliability Analysis Journal of Tongji University, 2002, 30(3): 269-272.
[13] 张斌, 雷晓燕, 罗雁云. 基于Newmark格式的车辆−轨道耦合迭代过程的改进算法[J]. 中南大学学报(自然科学版), 2016, 47(1): 298-306.
ZHANG Bin, LEI Xiaoyan, LUO Yanyun. Improved algorithm of iterative process for vehicle-track coupled system based on Newmark formulation. Journal of Central South University (Science and Technology), 2016, 47(1): 298-306.
[14] 雷晓燕, 张斌, 刘庆杰. 列车-轨道系统竖向动力分析的车辆轨道单元模型[J]. 振动与冲击, 2010, 29(03): 168-173+ 212.
LEI Xiaoyan, ZHANG Bin and LIU Qingjie. Model of vehicle and track elements for vertical dynamic analysis of vehicle-track system[J]. Journal of Vibration and Shock, 2010, 29(03): 168-173+ 212.
[15] 李再帏, 雷晓燕, 高亮. 高架轨道交通无砟轨道谱特性分析[J]. 铁道科学与工程学报, 2015, 12(1): 40-45.
LI Zaiwei, LEI Xiaoyan and GAO Liang. Fitting and Characteristic Analysis of Unballasted Track Irregularity Spectrum for Urban Viaduct Rail Transit[J]. Journal of Railway Science and Engineering, 2015, 12(1): 40-45.