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| Analysis of the Problems of Vossloh Fastening Used for Track Slab |
| LI Yan-ping |
| China Railway 12th Bureau Group Ltd., Xi'an, Shanxi 511518, China |
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Abstract Research purposes：The correct design and scientific installation of the fastening are essential to enhancing the linearity of railway track. The accurate and stable track linearity is the premise of guaranteeing the traffic safety of high-speed train. In investigating the production situation of CRTSⅡ track slab used for high-speed railway, it was found some fastenings used for CRTSⅡ slab were loose and the bolts floated. In this paper, the analysis is made for the problems mentioned above and some proposals to making good use of fastening and guaranteeing the construction quality are made in combination with the installation of the traditional fastening used for ballast track.
Research conclusions：From the analysis and research, it is concluded the double ended bolt substitutes for single ended bolt and after the waterproof treatment of the double ended bolt, water can not penetrate into the bushing, so the bolt floating caused by thawing the frozen water can be prevented effectively. It is necessary to change the shape and position of the hole of the bolt with elastic rubber cushion and one nut is added to each fastening for waterproof. After these remedies, the spatial position characteristics of the track, such as plain curve, vertical curve and spatial coordinate, are more stable.
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Received: 08 March 2010
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2010, Vol. 27 
