Abstract：Research purposes: The basic component of the track structure with isolated rubber floating slab is the concrete slab track born by the elastic element. The research was done on the mechanical properties of the floating slab, the analysis was made for the natural frequencies, mechanical response under dynamic load and damping performance, and the discussion was made on the reasonable thickness of the ballastless track to provide the reference to the track design.
Research conclusions: The research results show that the natural frequency of the track system decreases with the increase of the thickness of the ballastless track, and the rate of change decreases with increase of the track thickness. The acceleration insertion loss of the track basis increases with the increase of the thickness of the ballastless track，and the rate of change decreases with increase of the track thickness. When the thickness of the ballastless track reaches at 0.4m，the corresponding dynamic performance，the damping performance effect and the concrete amount of track bed are rather economical. From the present theoretical analysis and online testing, it can be seen the damping performance effect of the isolated rubber floating slab system is obvious，and its construction and maintenance programs are systematic.
[6] 徐志强，姚京川，杨宜谦,等.椽胶支承浮置板式轨道结构动力计算分析[J].铁道标准设计， 2003(8): 11-13.
Xu Zhiqiang, Yao Jingchuan, Yang Yiqian, etc. An Analysis of Dynamic Computation for Rubber Bearing Floating Slab Track Structure [J]. Railway Standard Design, 2003(8): 11-13.
[7] 练松良,刘加华.城市轨道交通减振降噪型轨道结构的选择[J].城市轨道交通研究, 2003(3): 35-41.
Lian Songliang, Liu Jiahua. The Selection of Low Vibration and Noise Track Structure for Urban Rail Transit [J]. Urban Mass Transit,2003(3): 35-41.
[8] 杨宜谦,王澜，孙宁.城市轨道交通中浮置板式轨道结构的设计[J].工程建设与设计, 2005(4): 13-15.
Yang Yiqian, Wang Lan, Sun Ning. The Design of Floating Slabs in Urban Rail Transit Systems [J]. Construction & Design for Project, 2005(4): 13-15.
[9] 刘道通.钢弹簧浮置板轨道施工[J].铁道工程学报,2007(6): 31-34.
Liu Daotong. Construction Technique of Steel Spring Floating Slab Track [J]. Journal of Railway Engineering Society, 2007(6): 31-34.
[10]于春华.对GB50157—2003《地铁设计规范》部分条文的探讨[J].铁道工程学报,2005(2): 9-11.
Yu Chunhua. Discussion about Some Items of Code for the Design of Metro (GB 50157-2003) [J]. Journal of Railway Engineering Society, 2005(2): 9-11.
2013, Vol. 30 
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