Vehicle-Turnout Coupled Dynamics and Improvement Measures for Heavy Haul Lines
-
摘要: 为了保障车辆过岔的安全性并延长道岔使用寿命,基于刚柔耦合方法建立了精细化的车辆-道岔动力分析模型,研究了过岔方式、行车速度对车岔系统动力特性的影响规律,并对岔区设置轨距拉杆、改变岔区轨底坡、加宽尖轨及心轨断面3种措施的效果进行了评估.研究表明:设置轨距拉杆最大可以降低43.0%的轮轨横向力及5.1%的轮轨垂向力;当岔区轨底坡从1:40增加至1:20,直股线路 可降低10.7%的轮轨横向力及4.0%的轮轨垂向力,侧股线路轨可降低16.7%的轮轨横向力及14.8%的轮轨垂向力;尖轨、心轨断面宽度增加2 mm时引起的轮轨相互作用增幅最大为8.3%,但可降低18.8%的钢轨动弯应力.Abstract: To ensure that heavy-haul vehicle safely passes the turnout zone and increase turnout service life, a refined vehicle-turnout dynamic model was established based on the rigid-flexible coupling modeling method. The effects of the directions of vehicle passing turnout and vehicle speed on the dynamic characteristics of the vehicle-turnout system were analyzed. The performance of three improvement measures including setting track gauge bars, changing rail cant and increasing the widths of switch rail and nose rail were evaluated. Results show that setting track gauge bars in turnout zone decreases 43% wheel-rail lateral force and 5.1% wheel-rail vertical force respectively; changing the rail cant from 1:40 to 1:20 reduces 10.7% wheel-rail lateral force and 4.0% wheel-rail vertical force in the main route, and reduce 16.7% wheel-rail lateral force and 14.8% wheel-rail vertical force in the divergent route; increasing the width of the switch rail and nose rail with 2mm enlarges the wheel-rail interaction by 8.3%, but reduces18.8% rail dynamic bending stress.
-
Key words:
- turnout /
- rigid-flexible coupling /
- dynamic characteristics /
- improvement measures
-
高亮. 轨道工程 [M]. 北京:中国铁道出版社,2010: 3-5. 任尊松,刘志明,金学松. 心轨轨顶降低值对轮岔动态相互作用影响研究 辛涛. 高速铁路高架桥上无砟道岔动力特性研究 曾志平. 高速铁路桥上无缝道岔伸缩力及列车-道岔-桥梁系统空间振动研究 [J]. 铁道学报,2009,31(2): 79-83. REN Zunsong, LIU Zhiming, JIN Xuesong. Study on the influence of the nose rail height on the wheel-turnout interaction dynamics [J]. Journal of the China Railway Society, 2009, 31(2): 79-83. 赵国堂. 高速铁路道岔区动力响应的模拟研究 KASSA E. Simulation of dynamic interaction between train and railway turnout 李苍楠. 基于刚柔耦合联合仿真的高速铁路桥上无砟道岔动力学研究 [D]. 北京:北京交通大学,2011. 翟婉明. 车辆-轨道耦合动力学 罗雁云,谭大正,施董燕. 基于刚柔结合建模技术的道岔区轮轨动力学仿真分析 [D]. 长沙:中南大学,2006. 吴安伟,罗赟. 变截面道岔振动特性研究 [J]. 中国铁道科学,1996,17(4): 90-94. ZHAO Guotang. Computer simulation of the dynamic behavior of a vehicle passing a turnout in high-speed railways 刘哲,王平,陈嵘,等. 道岔动力参数设计法及其在转辙器设计中的应用 KASSA E, NIELSEN J C O. Dynamic train turnout interaction in an extended frequency range using a detailed model of track dynamics [J]. China Railway Science Journals, 1996, 17(4): 90-94. GONZLEZ F J, SUAREZ B, PAULIN J, et al. Safety assessment of underground vehicles passing over highly resilient straight track in the presence of a broken rail 杨春雷. 重载货车轴重与速度匹配关系研究 [J]. Vehicle System Dynamics, 2006, 44(3): 247-285. [D]. 北京:北京交通大学,2011. [M]. 北京:科学出版社,2007: 392-393. [J]. 城市轨道交通研究, 2010,13(2): 18-22. LUO Yanyun, TAN Dazheng, SHI Dongyan. Dynamic analysis of wheel/rail system for turnout based on rigid flexible hybrid modeling [J]. Urban Mass Transit, 2010, 13(2): 18-22. [J]. 铁道建筑,2006(4): 82-85. WU Anwei, LUO Yun. Research on vibration performance of turnout with variable cross-section [J]. Railway Engineering, 2006(4): 82-85. [J]. 西南交通大学学报,2012,47(4): 611-617. LIU Zhe, WANG Ping, CHEN Rong, et al. Dynamic parameter design method for turnout and its application in switch design [J]. Journal of Southwest Jiaotong University, 2012, 47(4): 611-617. [J]. Journal of Sound and Vibration, 2009, 320(4): 893-914. [J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2008, 222(1): 69-84. [D]. 成都:西南交通大学,2013.
点击查看大图
计量
- 文章访问数: 850
- HTML全文浏览量: 70
- PDF下载量: 594
- 被引次数: 0