Experiments Study on Longitudinal and Lateral Resistance of Steel Rod Reinforced Sleeper
-
摘要:
为了探究钢棒加强式轨枕的纵横向阻力机理、分担以及钢棒插入深度和砟肩宽度的影响规律，为川藏铁路长大坡道韧性和稳定性增强提供新方法，通过进行一系列纵横向阻力试验得到了钢棒加强式轨枕纵横向阻力的总体特性和分担情况；通过改变钢棒插入深度和砟肩宽度探究了两者对钢棒加强式轨枕纵横向阻力的影响规律. 结果表明：与普通轨枕相比，钢棒加强式轨枕的纵横向阻力都有提高，当砟肩宽度为500 mm，堆高为0，钢棒插入深度为400 mm时，钢棒加强式轨枕纵横向阻力比肩宽为500 mm、堆高为150 mm条件下普通轨枕分别高39.2%和53.7%，枕底部分横向阻力分担比普通轨枕提升8%，纵向阻力提升26%；钢棒插入深度对道床阻力影响较大，在砟肩宽度为500 mm、堆高为0 时，插入深度由100 mm变至400 mm，相较于普通轨枕肩宽为500 mm、堆高为150 mm的工况，纵向阻力增幅由5.1%变至39.2%，横向阻力增幅由6.1%变至53.7%；砟肩宽度变化时，纵向阻力变化较小，横向阻力变化较大.
Abstract:In order to explore the longitudinal and lateral resistance mechanism, contribution and influence of steel rod depth and shoulder width of steel rod reinforced sleeper, and to provide a new method for increasing resilience and stability of the long sharp slope in Sichuan−Tibet railway, a series of longitudinal and lateral resistance tests were carried out. Firstly, the overall characteristics and contribution of the longitudinal and lateral resistance of the steel rod reinforced sleeper were obtained. Then, by changing steel rod depth and shoulder width, the influence of them on the longitudinal and lateral resistance of the steel rod reinforced sleeper was explored. The results show that, compared with ordinary sleepers, the longitudinal and lateral resistance of steel rod reinforced sleeper has increased. With the shoulder with of 500 mm, shoulder height of 0 and insertion depth of 400 mm, the lateral resistance of steel rod reinforced sleeper is 53.7% higher than that of ordinary sleepers with shoulder width of 500 mm and pile height of 150 mm, and longitudinal resistance is 39.2% higher. At the same time, the contribution of sleeper bottom in lateral resistance is 8% higher compared with ordinary sleepers, with 26% higher in longitudinal resistance. The insertion depth of the steel rod exerts a great influence on the resistance. For instance, with shoulder width of 500 mm and shoulder height of 0, when insertion depth changes from 100 mm to 400 mm, the increment of longitudinal is from 5.1% to 39.2%, and that of lateral resistance is from 6.1% to 53.7%, compared with ordinary sleepers with shoulder width of 500 mm and shoulder height of 150 mm. With the change of the shoulder width, the longitudinal resistance changes slightly and the lateral resistance changes more.
-
Key words:
- Sichuan−Tibet railway /
- ballast bed /
- bed resistance /
- steel rod reinforced sleeper
-
表 1 试验工况
Table 1. Test conditions
mm 试验类型 轨枕类型 肩宽 >堆高 插入深度 横向阻力 普通轨枕 500 150 钢棒加强式 500 0 400 500 0 200 500 0 100 400 0 400 300 0 400 纵向阻力 普通轨枕 500 150 钢棒加强式 500 0 400 500 0 200 500 0 100 400 0 400 300 0 400 
下载: 导出CSV
表 2 道床阻力分担
Table 2. Resistance contribution
阻力
部分钢棒加强式 普通轨枕 横向阻力/
kN横向阻力所占
比例/%纵向阻力/
kN纵向阻力所占
比例/%横向阻力/
kN横向阻力所占
比例/%纵向阻力/
kN纵向阻力所占
比例/%枕底 10.24 62 8.62 46 4.49 54 2.60 20 砟肩 3.96 24 1.12 6 2.58 31 1.06 8 枕心 2.31 14 8.99 48 1.24 15 9.54 72 总值 16.51 100 18.73 100 8.31 100 13.2 100
下载: 导出CSV
-
[1] 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,2010,145(10): 49-51. doi: 10.3969/j.issn.1006-2106.2010.10.011YANG Yanli. Experimental study on design parameters of lateral and longitudinal resistance of ballast bed with type Ⅲ concrete sleeper[J]. Journal of Railway Engineering Society, 2010, 145(10): 49-51. doi: 10.3969/j.issn.1006-2106.2010.10.011 [2] 井国庆,贾文利,付豪,等. 高速铁路有砟道床横向阻力特性与固化技术[J]. 西南交通大学学报,2019,54(5): 1087-1092. doi: 10.3969/j.issn.0258-2724.2018.04.009JING Guoqing, JIA Wenli, FU Hao, et al. High-speed ballasted railway track lateral resistance characteristics and reinforcements[J]. Journal of Southwest Jiaotong University, 2019, 54(5): 1087-1092. doi: 10.3969/j.issn.0258-2724.2018.04.009 [3] 刘浩,王源,刘淦中,等. 轨道框架对散粒体道床非线性纵向阻力影响的试验研究[J]. 铁道学报,2017,39(5): 84-89. doi: 10.3969/j.issn.1001-8360.2017.05.013LIU Hao, WANG Yuan, LIU Ganzhong, et al. Experimental study on effect of track frame on nonlinear longitudinal resistance of granular ballast bed[J]. Journal of the China Railway Society, 2017, 39(5): 84-89. doi: 10.3969/j.issn.1001-8360.2017.05.013 [4] 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(3): 4-6. doi: 10.3969/j.issn.1004-2954.2010.03.002 [5] 林红松, 颜华, 刘浩. 川藏铁路跨区间无缝线路适应性分析[C]//川藏铁路建设的挑战与对策——2016学术交流会论文集. 成都: 人民交通出版社, 2016: 493-498. [6] 黄艳磊,邓军桥,张红伟. 川藏铁路限制坡度方案研究[J]. 高速铁路技术,2015,6(3): 97-101. doi: 10.3969/j.issn.1674-8247.2015.03.022HUANG Yanlei, DENG Junqiao, ZHANG Hongwei. Schematic study on limiting gradient of Chengdu−Lhasa railway[J]. High Speed Railway Technology, 2015, 6(3): 97-101. doi: 10.3969/j.issn.1674-8247.2015.03.022 [7] 宋章,张广泽,蒋良文,等. 川藏铁路主要地质灾害特征及地质选线探析[J]. 铁道标准设计,2016,60(1): 64-67.SONG Zhang , ZHANG Guangze , JIANG Liangwen. Analysis of the characteristics of major geological disasters and geological alignment of Sichuan−Tibet railway[J]. Railway Standard Design, 2016, 60(1): 64-67. [8] 卢耀荣. 无缝线路研究与应用[M]. 北京: 中国铁道出版社, 2004: 87. [9] 黄长绥,孙中正. 铁路沥青道床的应用与发展[J]. 铁道工程学报,1991(3): 138-146. [10] JING G Q, ZHANG X, JIA W L. Lateral resistance of polyurethane-reinforced ballast with the application of new bonding schemes:laboratory tests and discrete element simulations[J]. Construction and Building Materials, 2019, 221: 627-636. doi: 10.1016/j.conbuildmat.2019.06.114 [11] JING G Q, AELA P, FU H, et al. Numerical and experimental analysis of single tie push tests on different shapes of concrete sleepers in ballasted tracks[J]. Proceedings of the Institution of Mechanical Engineers,Part F:Journal of Rail and Rapid Transit, 2018, 233: 666-677. [12] ZAKERI J A, MIRFATTAHI B, FAKHARI M. Lateral resistance of railway track with frictional sleepers[J]. Proceedings of the Institution of Civil Engineers-Transport, 2012, 39: 151-155. [13] 井国庆,贾文利,强伟乐,等. 有砟道床梯形轨枕横向阻力试验与构成分析[J]. 西南交通大学学报,2019,54(1): 9-13.JING Guoqing, JIA Wenli, QIANG Weile, et al. Ladder sleeper lateral resistance test and contribution analysis of ballasted track[J]. Journal of Southwest Jiaotong University, 2019, 54(1): 9-13. [14] ESMAEILI M, KHODAVERDIAN A, NEYESTANAKI H K, et al. Investigating the effect of nailed sleepers on increasing the lateral resistance of ballasted track[J]. Computers and Geotechnics, 2016, 71: 1-11. doi: 10.1016/j.compgeo.2015.08.006 -
下载:
点击查看大图
计量
- 文章访问数: 389
- HTML全文浏览量: 203
- PDF下载量: 11
- 被引次数: 0