of;
Civil;
and;
Transportation;
Engineering,;
Hohai;
University,;
Nanjing;
210098,;
China;
.;
of;
Civil;
and;
Environmental;
Engineering,;
Virginia;
Polytechnic;
Institute;
and;
State;
University,;
Blacksburg;
24061,;
USA;
of;
Transportation,;
Southeast;
University,;
Nanjing;
210096,;
China;