Ladder Sleeper Lateral Resistance Test and Contribution Analysis of Ballasted Track
-
摘要: 梯形轨枕具有稳定性好、振动小的优点，并能减弱传递给轨道的动荷载，使得梯形轨枕在高速铁路、重载铁路、城市轨道交通中均有较好表现，但是其横向阻力一直未进行系统试验研究. 本文研究了不同砟肩宽度（200、300、400、500 mm）梯型轨枕道床横向阻力，分析了阻力构成，并与Ⅲc型轨枕对比. 结果表明，在砟肩宽度均为500 mm道床上，平肩式梯形轨枕与平肩式及砟肩堆高150 mm、Ⅲc型轨枕相比，阻力分别提升了约55%、14%，并且，平肩式道床砟肩宽度由200 mm增加至500 mm过程中，梯形轨枕道床横向阻力无明显增长，其横向阻力主要由3部分构成，其中轨枕底面与道床摩擦提供约34%，枕心部位提供约47%，轨枕端部提供约19%. 试验表明，采用梯形轨枕，可选用较小截面尺寸的道床，从而大幅节约建设用地及道砟用量.Abstract: The ladder sleeper with the advantages of good stability, less vibration, and reduction of the dynamic load transferred to the ballast can be used in high-speed, heavy-haul, and urban railways, but its lateral resistance has not been systematically studied yet. In this work, the lateral resistance of different shoulder widths （200, 300, 400 mm, and 500 mm） using the ladder sleeper was measured, and the contribution of lateral resistance was analysed and compared with that of a Chinese Ⅲc sleeper. The results show that for ballasted track with a 500 mm shoulder height and a flat shoulder, the lateral resistance of the ladder sleeper, comparing with the Chinese Ⅲc sleeper, increases 14% and 55%, respectively. The ladder sleeper lateral resistance is identical when the shoulder width increases from 200 to 500 mm. Additionally friction between the bottom of the ladder sleeper and ballast provides 34% of the total lateral resistance, leaving 47% provided by the crib and 19% provided by the end. This test shows that the ladder sleeper can be used in a smaller-section-size ballasted bed and it can largely decrease the construction area and the ballast usage.
-
Key words:
- ladder sleeper /
- lateral resistance /
- ballasted track /
- shoulder width
-
图 5 砟肩宽度对梯形轨枕道床横向阻力的影响
Figure 5. Influence of shoulder width on ladder sleeper lateral resistance
表 1 工况类型
Table 1. Test condition
工况 砟肩宽度/mm 砟肩堆高/mm 枕心高差 轨枕类型 R1 500 150 饱满 Ⅲc型 R2 500 0 饱满 Ⅲc型 A1 500 0 饱满 梯形 A2 400 0 饱满 梯形 A3 300 0 饱满 梯形 A4 200 0 饱满 梯形 B1 饱满 梯形 B2 降低40 mm 梯形 B3 降低50% 梯形 B4 0 梯形 
下载: 导出CSV
表 2 梯形轨枕阻力分担
Table 2. Ladder sleeper lateral-resistance constitution
阻力部分 计算来源 横向阻力/（kN•m–1） 所占比例/% 总值 A1 18.31 100 枕底 B4 6.21 34 端部 A1、B1的差值 3.55 19 枕心 B1、B4的差值 8.55 47
下载: 导出CSV
-
井国庆. 铁路有砟道床[M]. 北京: 中国铁道出版社, 2012: 140-141 KISH A. On the fundamentals of track lateral resistance[R]. Maryland: AREMA, 2011 国家铁路局. 高速铁路设计规范: TB 10621—2014[S]. 北京: 中国铁道出版社, 2014 铁道部运输局. 2012 高速铁路有砟轨道线路维修规则（试行）: TG/GW116—2013[S]. 北京: 中国铁道出版社, 2012 井国庆,王子杰,林建. 基于力学平衡原理飞砟机理与防治研究[J]. 铁道科学与工程学报,2014(6): 96-101 doi: 10.3969/j.issn.1672-7029.2014.04.017JING Guoqing, WANG Zijie, LIN Jian. Mechanical equilibrium analysis of ballast flight mechanis and counteracting measures[J]. Journal of Railway Science and Engineering, 2014(6): 96-101 doi: 10.3969/j.issn.1672-7029.2014.04.017 HAJIME W, NOBUYUKI M, HIROYUKI O. Performance and application of ballast ladder track[J]. New Railway Structure, 2002, 52(4): 32-34 HAJIME W, NOBUYUKI M, HIROYUKI O. Structure and design of ladder sleeper[J]. New Railway Structure, 2006, 56(3): 26-28 HAJIME W, NOBUYUKI M. Performance test of ballasted ladder trackat TTCI and floating ladder track in Japan[C]//Washington D. C.: Transportation Research Board Annual Meeting, 2002: 209-216 HIROYUKI O, MASAMICHI S, NOBUYUKI M, HAJIME W. Environmental performance improvement of way structural system using ladder track[J]. Nihon Sanka Fujinka Gakkai Zasshi, 2003, 46(8): 1-4 葛辉,王平. 时速120 km地铁梯形轨枕轨道现场测试与分析[J]. 铁道标准设计,2017,61(4): 38-42GE Hui, WANG Ping. Test and analysis of ladder sleeper track for 120 km/h metro[J]. Railway Standard Design, 2017, 61(4): 38-42 XIA H, DENG Y, ZOU Y. Dynamic analysis of rail transit elevated bridge with ladder track[J]. Frontiers of Architecture and Civil Engineering, 2009, 3(1): 3-8 YAN ZQ, MARKINE VL, GU AJ, et al. Dynamic optimization of ladder track components to minimize the subway vibration[C]//Proceedings of the Eleventh International Conference on Computational Structures Technology. Stirlingshire: Civil-Comp Press, 2012: 1967-1984 肖宏,高亮,侯博文. 基于离散元分析的高速铁路桥上轨枕选型[J]. 西南交通大学学报,2015,50(5): 811-816 doi: 10.3969/j.issn.0258-2724.2015.05.007XIAO Hong, GAO Liang, HOU Bowen. 3D discrete element analysis of selection of sleeper types on high-speed railway bridge[J]. Journal of Southwest Jiaotong University, 2015, 50(5): 811-816 doi: 10.3969/j.issn.0258-2724.2015.05.007 IORIO AD, GRASSO M, PENTA F. Transverse strength of railway tracks:part 2. Test system for ballast resistance in line measurement[J]. Frattura Ed Integrità Strutturale, 2014, 30: 578-592 doi: 10.3221/IGF-ESIS.30.69 杨全亮,朱彬. Ⅲ型混凝土轨枕道床纵、横向阻力试验分析[J]. 铁道标准设计,2010,54(3): 4-6 doi: 10.3969/j.issn.1004-2954.2010.02.002YANG Quanliang, ZHU Bin. Analysis on tests for longitudinal and horizontal resistance of In-typed concrete track bed[J]. Railway Standard Design, 2010, 54(3): 4-6 doi: 10.3969/j.issn.1004-2954.2010.02.002 杨艳丽. Ⅲ型混凝土轨枕有砟道床纵横向阻力设计参数试验研究[J]. 铁道工程学报,2010,27(10): 49-51 doi: 10.3969/j.issn.1006-2106.2010.10.011YANG Yanli. Experimental study on design parameters of longitudinal and lateral resistance of ballast bed for Ⅲ-type concrete sleeper[J]. Journal of Railway Engineering Society, 2010, 27(10): 49-51 doi: 10.3969/j.issn.1006-2106.2010.10.011 PEN L, POWRIE W. The contribution of base,crib and shoulder ballast to the lateral sliding resistance of railway track; a geotechnical perspective[J]. Proceedings of the Institution of Mechanical Engineers Part F:Journal of Rail & Rapid Transit, 2011, 225(2): 113-128 PEN LE, BHANDARI A R, POWRIE W. Sleeper end resistance of ballasted railway tracks[J]. Journal of Geotechnical &Geoenvironmental Engineering, 2014, 140(5): 04014004-1-04014004-14 KOIKE Y, NAKAMURA T, HAYANO K. Numerical method for evaluating the lateral resistance of sleepers in ballasted tracks[J]. Soils and Foundations, 2014, 54(3): 502-514 doi: 10.1016/j.sandf.2014.04.014 -
下载:
点击查看大图
图(7) / 表(2)
计量
- 文章访问数: 485
- HTML全文浏览量: 237
- PDF下载量: 15
- 被引次数: 0