CRTSⅡ型板式轨道参数对车辆频率响应的影响

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摘要摘要：研究目的：为研究CRTSⅡ型板式无砟轨道结构参数对高速车辆运行品质的影响，本文建立高速车辆-CRTSⅡ型板式轨道垂向耦合系统动力分析模型，将频率分析法与辛数学方法相结合进行求解，分析轨道板厚度、混凝土支承层厚度、扣件系统刚度和阻尼、CA砂浆弹性模量和阻尼对高速车辆频率响应的影响。研究结论：（1）轨道结构参数对车体、转向架振动的影响较小，对轮轨垂向力和轮对垂向加速度的影响较大；（2）轨道板厚度不宜过大或过小，若过大则在50~70 Hz范围内的轮对垂向加速度、轮轨垂向力的频率响应增大，若过小则在 30~50 Hz范围内的频率响应增大；（3）在满足轨道结构强度的前提下，适当减小混凝土支承层的厚度，可降低轮对垂向加速度和轮轨垂向力；（4）在满足轨道几何形位和轨道动位移的前提下，采用小刚度、大阻尼的扣件系统，可降低轮对垂向加速度和轮轨垂向力；（5）本研究成果可为CRTSⅡ型板式轨道的设计提供理论依据。

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	徐金辉1
	汪鑫2
	黄大维1
	王彪3

关键词 ：关键词：CRTSⅡ型板式无砟轨道, 轨道结构参数, 高速车辆, 频率响应

Abstract：Abstract：Research purposes： To study the effects of structural parameters of CRTSⅡ slab track on the operation quality of vehicles, a dynamic analysis model of high speed vehicle - CRTSⅡ slab track vertical coupling system was established. Frequency analysis method and symplectic method were combined to solve the frequency responses of the coupling system, and the influence on frequency responses of high speed vehicle of slab thickness, concrete supporting layer thickness, stiffness and damping of fastening system, elastic modulus and damping of CA mortar was studied.  Research conclusions： (1)The track parameters have negligible influence on the vibration of car-body and bogie, but have large influence on wheel-rail vertical force and wheel-set vertical acceleration. (2)The thickness of slab should not be too large or too small. If the thickness of slab is too large, the vibration in the range of 50~70 Hz of wheel-set vertical acceleration and wheel-rail vertical force will be increased. In turn, if the thickness of slab is too small, the vibration in the range of 30~50 Hz of wheel-set vertical acceleration and wheel-rail vertical force will be increased too. (3)Under the premise of satisfying track structure strength, appropriately reducing the thickness of concrete supporting layer can decrease wheel-set vertical acceleration and wheel-rail vertical force. (4)Under the premise of satisfying track geometry and track dynamic displacement, adopting fastening system with small stiffness and large damping can decrease wheel-set vertical acceleration and wheel-rail vertical force. (5) The research results can provide a theoretical basis for the design of CRTS II slab track and promote the development of China's high speed railway. 

Key words： Key words: CRTSⅡslab track parameters of track high speed vehicle frequency response

收稿日期: 2017-08-07

作者简介: 徐金辉，1987年出生，男，讲师。

引用本文:

徐金辉1,汪鑫2,黄大维1,王彪3. CRTSⅡ型板式轨道参数对车辆频率响应的影响[J]. 铁道工程学报, 2018, 35(1): 62-69.
XU Jin-hui1, WANG Xin2, HUANG Da-wei1, WANG Biao3. Effects of Parameters of CRTS Ⅱ Slab Track on Frequency Responses of High-speed Vehicle. Journal of Railway Engineering Society, 2018, 35(1): 62-69.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2018/V35/I1/62