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| Research on the Track Quality Index and Its Application in High Speed
Railway Dynamic Acceptance |
| LI Guo – qing |
| (China Academy of Railway Sciences，Beijing 100081，China) |
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Abstract Abstract：Research purposes： Before opening the high speed railway in China，the completion acceptance including
dynamic acceptance is necessary， and the track geometry status is the key content of the dynamic acceptance. Track
quality index (TQI) is the average quality to evaluate track segments by using statistical characteristic value，and it is
the important index to evaluate the state of the track geometry，too. This paper evaluates the track geometry quality of
high - speed railway by analyzing the track quality index of opening high speed railway over the years in China and
summarizing track geometric quality assessment methods and standards at home and abroad.
Research conclusions ：( 1) The TQI can satisfy the requirements of relevant acceptance criteria on those opening high speed railways in China. (2) With the improvement of railway construction and the fine adjustment and finishing technology in some operation departments，and with the enrichment of the ability and experience，track geometry quality
continues to improve，and the TQI of high speed railway built in recent years is generally superior to the same level lines
built earlier. ( 3 ) For high speed railway，it is suggested that the track quality index acceptance criteria corresponding the
amplitude and the wavelength are complemented. (4) The research results have significance for track condition
acceptance of tlie high - speed railway.
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Received: 22 July 2016
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2016, Vol. 33 
