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| 重载车辆-道岔耦合动力特性及岔区加强研究 | |
| 引用本文： | 侯博文,高亮,刘启宾. 重载车辆-道岔耦合动力特性及岔区加强研究[J]. 西南交通大学学报, 2015, 28(4): 604-609. DOI: 10.3969/j.issn.0258-2724.2015.04.005 |
| 作者姓名： | 侯博文 高亮 刘启宾 |
| 基金项目： | 中国铁路总公司科技管理部资助项目(2011G028-A-3)中国铁路总公司科技管理部资助项目(2014G005-C) |
| 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. |
| 关 键 词： | 道岔 刚柔耦合 动力特性 加强措施 |
| 收稿时间： | 2014-12-25 |
Vehicle-Turnout Coupled Dynamics and Improvement Measures for Heavy Haul Lines |
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| HOU Bowen,GAO Liang,LIU Qibin. Vehicle-Turnout Coupled Dynamics and Improvement Measures for Heavy Haul Lines[J]. Journal of Southwest Jiaotong University, 2015, 28(4): 604-609. DOI: 10.3969/j.issn.0258-2724.2015.04.005 | |
| Authors: | HOU Bowen GAO Liang LIU Qibin |
| 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. |
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