Laboratory;
of;
Traffic;
Safety;
on;
Track;
of;
Ministry;
of;
Education(School;
of;
Traffic;
and;
Transportation;
Engineering,;
Central;
South;
University),;
Changsha;
410075,;
China;
Tunnel;
Engineering;
&;
Rail;
Transit;
Design;
and;
Research;
Institute,;
Shanghai;
200235,;
China;