State;
Key;
Laboratory;
of;
Disaster;
Reduction;
in;
Civil;
Engineering,;
Tongji;
University,;
Shanghai;
200092,;
China;
College;
of;
Civil;
&;
Hydroelectric;
Engineering,;
China;
Three;
Gorges;
University,;
Yichang;
443002,;
China;