Citation: | GAO Yuan, YANG Dongsheng, WANG Shuguo. Influence of Stress-Free Temperature Difference on Force Characteristics of Seamless Turnouts in Plateau Areas[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230222 |
To investigate the feasibility of laying seamless turnouts in plateau areas and the influence of plateau climate on the stability of seamless turnouts across areas, the effect of stress-free temperature difference on the force characteristics of seamless turnouts under different climates, elevations, and structural types was analyzed. First, based on the physic-geographical environment and operating conditions of railways in plateau areas, the typical seamless turnouts of the Qinghai−Xizang line during upgrading were selected as research objects, and then the parameter tests of key force transmission components with force characteristics in turnouts under different structural types were conducted, clarifying the influence of the low temperature of plateau climate on resistance force of fasteners and ballast beds. At last, the calculation model of seamless turnouts considering the multi-field coupling effect and plastic resistance force was established, and the relationship between stress-free temperature difference and stress deformation of seamless turnouts was revealed. The results show that when the temperature difference is high, the growth rate of temperature additional force induced by stress-free temperature difference increases from 4.5 kN/℃ (Daqiongguo Station) to 6 kN/℃ (Tanggulabei Station); the stress-free temperature difference between seamless turnouts and adjacent lines or adjacent turnouts has great impact on stress formation of seamless turnouts, and the growth rate of lateral displacement caused by the stress-free temperature difference of the line/turnout rail section increases from 0.010 mm/℃ (Daqiongguo Station) to 0.011 mm/℃ (Tanggulabei Station). The impact of the stress-free temperature difference between left/right or straight/side rails on turnout stability is small. In plateau areas, the turnout involves the locking of multiple strands of rail, which is easy to cause a large stress-free temperature difference. To increase safety redundancy, the stress-free temperature difference should be controlled within ±3 ℃, while that of the adjacent rail section should be no more than 5 ℃.
[1] |
卢耀荣. 无缝线路研究与应用[M]. 2版. 北京:中国铁道出版社,2010:1-94.
|
[2] |
叶军. 寒冷地区小半径曲线无缝线路设计研究[D]. 北京:北京交通大学.
|
[3] |
李媛. 青藏铁路多年冻土区无缝道岔力学特性研究[D]. 兰州:兰州交通大学,2021.
|
[4] |
王平,肖杰录,陈嵘. 高速铁路桥上无缝线路技术[M]. 北京:中国铁道出版社,2016.
|
[5] |
AN R, LUO Y Y, LEE L. Analysis of relationship between lateral stability and dynamic characteristic of continuous welded rail track[J]. Applied Mechanics and Materials, 2014, 488/489: 1027-1030. doi: 10.4028/www.scientific.net/AMM.488-489.1027
|
[6] |
BANI M M, MANJUNATH D Y M, NANDY M P P. Effect of temperature gradient on continuous PSC bridge for straight and curved profile[J]. International Journal of Engineering Research and Technology, 2017, V6(5): 362-371.
|
[7] |
SHU D, GUO L, YIN L A, et al. Research on global and local stability of continuous welded rail based on finite element analysis and discrete short-time Fourier transform[J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2016, 230(4): 1351-1362. doi: 10.1177/0954409715596193
|
[8] |
KISH A, ATEN J. A “smart systems” approach for better managing cwr thermal forces at extreme temperature[C]//Rail: the Core of Integrated Transport, Conference on Railway Engineering. Perth: IEEE, 2012: 71-79.
|
[9] |
ZHAO G Y, CAI X P, LIU W L, et al. Mechanical properties and structural optimization of continuous welded rail on super-long-span suspension bridges for high-speed railway[J]. Applied Sciences, 2021, 12(1): 305. doi: 10.3390/app12010305
|
[10] |
刘浩,谢铠泽,王平,等. 道床阻力区域分布及退化对钢轨纵向力的影响[J]. 西南交通大学学报,2017,52(1): 98-105. doi: 10.3969/j.issn.0258-2724.2017.01.014
LIU Hao, XIE Kaize, WANG Ping, et al. Effect of regional distribution and degradation of ballast resistance on longitudinal force of rail[J]. Journal of Southwest Jiaotong University, 2017, 52(1): 98-105. doi: 10.3969/j.issn.0258-2724.2017.01.014
|
[11] |
高亮,张雅楠,吕宝磊,等. 千米级以上超大跨径桥上无缝线路梁轨相互作用分析及应用[J]. 北京交通大学学报,2021,45(4): 9-18. doi: 10.11860/j.issn.1673-0291.20210111
GAO Liang, ZHANG Yanan, LYU Baolei, et al. Analysis and application of continuous welded rail’s beam-track interaction on ultra-large span bridges above one kilometer[J]. Journal of Beijing Jiaotong University, 2021, 45(4): 9-18. doi: 10.11860/j.issn.1673-0291.20210111
|
[12] |
徐浩,林红松,田春香,等. 100m简支钢桁梁桥无缝线路伸缩力影响因素研究[J]. 铁道工程学报,2022,39(2): 46-51. doi: 10.3969/j.issn.1006-2106.2022.02.009
XU Hao, LIN Hongsong, TIAN Chunxiang, et al. Research on the influence factors of expansion and contraction force of CWR on 100 m simply supported steel truss bridge[J]. Journal of Railway Engineering Society, 2022, 39(2): 46-51. doi: 10.3969/j.issn.1006-2106.2022.02.009
|
[13] |
RUGE P, BIRK C. Longitudinal forces in continuously welded rails on bridgedecks due to nonlinear track-bridge interaction[J]. Computers & Structures, 2007, 85(7/8): 458-475.
|
[14] |
王平,陈嵘,徐井芒,等. 高速铁路道岔系统理论与工程实践研究综述[J]. 西南交通大学学报,2016,51(2): 357-372. doi: 10.3969/j.issn.0258-2724.2016.02.015
WANG Ping, CHEN Rong, XU Jingmang, et al. Theories and engineering practices of high-speed railway turnout system: survey and review[J]. Journal of Southwest Jiaotong University, 2016, 51(2): 357-372. doi: 10.3969/j.issn.0258-2724.2016.02.015
|
[15] |
REN J J, LI X Y. Occasional forces and displacements of longitudinally coupled ballastless jointless turnout on bridges[J]. Science Journal of Transportation, 2010(2): 38-46.
|
[16] |
王树国,高原,杨东升. 高原铁路铺设跨区间无缝线路可行性研究与试验方案[J]. 中国铁路,2022(8): 22-28.
WANG Shuguo, GAO Yuan, YANG Dongsheng. Feasibility study and test scheme of trans-section CWR track laid on plateau railway[J]. China Railway, 2022(8): 22-28.
|
[17] |
郭云龙,王新雨,廉栋,等. 摩擦型轨枕道床的横向阻力研究[J]. 西南交通大学学报,2022,57(2): 301-305,368. doi: 10.3969/j.issn.0258-2724.20200464
GUO Yunlong, WANG Xinyu, LIAN Dong, et al. Lateral resistance of frictional sleeper ballast bed[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 301-305,368. doi: 10.3969/j.issn.0258-2724.20200464
|
[18] |
陈政,郭春,谌桂舟,等. 基于MEC-BP高海拔隧道供氧浓度与劳动强度规律[J]. 西南交通大学学报,2023,58(3): 622-629. doi: 10.3969/j.issn.0258-2724.20210669
CHEN Zheng, GUO Chun, CHEN Guizhou, et al. Oxygen supply concentration and labor intensity of high altitude tunnel based on MEC-BP[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 622-629. doi: 10.3969/j.issn.0258-2724.20210669
|
[19] |
张晓阳,王树国. 客货共线铁路60 kg/m钢轨9号与12号道岔统型与结构优化[J]. 铁道建筑,2022,62(10): 1-7,16.
ZHANG Xiaoyang, WANG Shuguo. System type and structure optimization of 60 kg/m rail No. 9 and No. 12 turnout on passenger-freight common railway[J]. Railway Engineering, 2022, 62(10): 1-7,16.
|
[20] |
杨东升. 高原铁路道岔无缝化关键技术研究[R]. 北京:中国铁道科学研究院集团有限公司,2022.
|
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