Abstract：The stability of steel switch sleepers is low due to excessive vibration under moving train load. In order to improve the applicability of steel switch sleepers in turnouts, the effects of the geometric parameters of the steel sleeper and stiffness of the fastening and ballast are analyzed according to the vibration characteristics and dynamic response of the structure under train load. The key factors affecting the vibration of steel sleeper are found out and suggestions for structure optimization are put forward. The results show that the steel switch sleeper has low structural stiffness and is prone to torsional deformation and warpage due to the opening characteristics of the cross-section. By increasing the thickness of the bottom plate of steel sleeper, the cross-sectional stiffness will be improved, and the dynamic response of steel sleeper caused by cross-section deformation can be suppressed. In addition, the vibration response of steel sleeper is closely related to the stiffness of fastening and sleeper support. Uneven dynamic stiffness under rail can cause resonance of the steel sleeper-concrete turnout sleeper. In order to achieve the homogenization of dynamic stiffness, reasonable fastening stiffness and sleeper support stiffness can be designed according to the mass of the steel sleeper so as to reduce the vibration response of the steel sleeper. Finally, the vibration reduction effect of the optimized structural parameters and fastening stiffness of the steel switch sleeper is verified according to the vehicle-turnout dynamic coupled model.
王树国，易强，王猛，王璞. 钢岔枕振动特性及结构优化研究[J]. 振动与冲击, 2022, 41(17): 18-24.
WANG Shuguo, YI Qiang, WANG Meng, WANG Pu. Vibration characteristics and structural optimization of steel switch sleeper. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(17): 18-24.
[1] 侯爱滨. 道岔用钢岔枕的设计[J]. 铁道标准设计, 2002(4): 51−52.
HOU Aibin. Design of steel sleeper for turnout[J]. Railway Standard Design, 2002(4):51−52.
[2] 王平. 钢岔枕的力学特性分析及其改进措施[J]. 铁道建筑, 2000, (01):8−10.
WANG Ping. Mechanics characteristics analysis and improvement measures of steel switch sleepers[J]. Railway Engineering, 2000(1): 8−10.
[3] 汪盈盈. 钢岔枕振动特性分析与参数研究[D]. 西南交通大学, 2007.
WANG Yingying. Analysis of steel switch sleeper’s vibration performance and study of parameter[D]. Southwest Jiaotong University, 2007.
[4] 张大伟，王开云，翟婉明，等.重载铁路轨枕空吊对轮轨动力相互作用的影响研究[J].振动与冲击, 2017, 36(18): 1−7.
Dawei Zhang, Kaiyun Wang, Wanming Zhai, et al. Effect of unsupported sleepers on wheel/rail dynamic interaction in heavy-haul railway. Journal of Vibration and Shock, 2017, 36(18): 1−7.
[5] 王树国，王猛，葛晶，等. 复合材料式钢岔枕[P]. 中国：CN201785678U.
WANG Shuguo, WANG Meng, GE Jing, et al. Composite steel switch sleeper[P]. CHINA：CN201785678U.
[6] Jabbar-Ali Zakeri, Roshan Talebi. Experimental investigation into the effect of steel sleeper vertical stiffeners on railway track lateral resistance[J]. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2017, 231(1): 104−110.
[7] 高速铁路有砟轨道钢岔枕和铰接装置技术研究报告[R]. 中铁工程设计咨询有限责任公司, 2014.
Technical Research Report of steel switch sleepers and articulated devices for high speed railway ballasted track [R]. China Railway Engineering Design Consulting Co., Ltd, 2014.
[8] Guoqing Jing, Hao Fu, Peyman A. Lateral displacement of different types of steel sleepers on ballasted track[J]. Construction and Building Materials, 2018, 186: 1268−1275.
[9] 庞玲，强伟乐，周强，等. 新型钢枕道床横向阻力试验与分析[J]. 铁道工程学报, 2020, 37(2) :40−45.
PANG Ling, QIANG Weile, ZHOU Qiang, et al. Test and Analysis of Lateral Resistance of Innovated Steel Sleeper[J]. Journal of Railway Engineering Society, 2020, 37(2) :40−45.
[10] Kaewunruen S, Remennikov A M. Investigation of free vibrations of voided concrete sleepers in railway track system[J]. Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail and Rapid Transit, 2007, 221(4): 495−50
[11] Esmaeili M, Majidi-Parast S, Hosseini A. Comparison of dynamic lateral resistance of railway concrete, wooden and steel sleepers subjected to impact loading[J]. Road Materials & Pavement Design, 2019, 20(8): 1779−1806.
[12] 易强，王平，赵才友，等.有砟轨道结构弹性波传播特性研究[J].铁道学报, 2019, 41(6): 137−145.
YI Qiang, WANG Ping, ZHAO Caiyou, et al. Study on Elastic Wave Propagation Properties of Ballast Track Structure[J]. Journal of the China Railway Society, 2019, 41(6): 137−145.
[13] Tien Hoang, Denis Duhamel, Gilles Foret. Wave finite element method for waveguides and periodic structures subjected to arbitrary loads[J]. Finite Elements in Analysis and Design, 2020,179: 103437.
[14] Remennikov A, Kaewunruen S. Investigation of vibration characteristics of prestressed concrete sleepers in free-free and in-situ conditions[J]. 2007, 221: 495−507.
[15] 翟婉明. 车辆－轨道耦合动力学[M]. 科学出版社, 2015.
ZHAI Wanming. Vehivcel-Track Coupled Dynamics. [M]. Science Press, 2015.
