Form a structure capable of stably maintaining a track without increasing a track maintenance work for a lateral force produced by a body tilting car on a curve at a high speed running.
(a) General track structure
Generally apply the specifications of a reinforced track same as that of straight track {4.3.2(1)(a)} to the general structure except a sharp curved section though the load increases compared to the case of a straight track.
(b) Measures for sharp curved section
Reinforce sharp curved sections against a lateral force to prepare for stability of tracks.
1/ Heat-treated rail
Prevents side wear of a rail and prevents an increase of track adjustment work due to the side wear.
2/ Support of joint
Use a joint sleeper of a support joint to stabilize short-rail tracks.
3/ Others
Study the change to a long welded rail if possible.
- The effect for track stabilization by a long welded rail.
- Make study for decreasing the workload for replacing long welded rails.
4.3.3 Safety of high speed passing
It is necessary to take actions by considering the influence when improving the
