Track Maintenance Method Considering Dynamics of Shinkansen Rolling Stock

Yasukuni NAGANUMA, Hideyuki TAKAI
Ensureing a good riding quality in a high-speed operation is a permanent task for railway engineers. Track engineers of Shinkansen operating companies have introduced a long wave track irregularity maintenance method using 40m-chord and succeeded in improving the riding quality. However, they need a more effective and economical method for future track maintenance. To this end, we make two proposals in this report. The first proposal is a better way to calculate the 40m-chord target values from riding comfort levels by using vehicle dynamics. The second one is a new method using a "riding comfort evaluation filter " with which we can calculate riding comfort wave form from track irregularity. We think our method of "riding comfort evaluation filter " is a more effective and economical way of track maintenance planning.