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| Research on the Scheme of Installing Friction Plate and End-spine on CRTSⅡSlab Ballastless Track on Bridge of Zhengzhou-Wuhan Passenger Dedicated Line |
| Ge Hai-juan |
| China Railway Siyuan Survey and Design Group Co. Ltd. , Wuhan, Hubei 430063, China |
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Abstract Research purposes：After the base plate of CRTSⅡ slab ballastless track on bridge is vertically continuous, the temperature force and braking force caused by it will affect the track structure. Installation of friction plate and end-spine within certain region of subgrade behind abutment can transfer the forces to subgrade, and the forceswill not affect track structure. The purpose of this research is to seek a scheme of installation of the friction plate and end-spine, which can ensure the safety and stability of track structure and also can reduce the construction cost.
Research conclusions：The scheme of using inverted T type end-spine, filling certain depth of roadbed surface and bottom layer under small end-spine with graded gravel-doped cement, and filling subgrade with graded gravel-doped cement at both ends of large end-spine within 5m width by 1∶2 slope was adopted. Adopting this scheme, the maximum longitudinal displacement of end-spine is 3mm under loading, which can ensure the safety and stability of track structure. Besides, the costs of the friction plate and end-spine are lower than that for Beijing-Tianjin intercity Railway.
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Received: 20 September 2009
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2010, Vol. 27 
