Research Article

Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems

Table 1

Modal analysis results of the bare building and of the retrofitted building.

ModeNRFBRB
[s] [s] [s] [s] [s] [s]

1.2041.2040.051.2041.0470.3301.1681.0290.342
0.3910.3910.050.3910.3870.1430.2550.2300.131
0.2180.2180.0750.2180.2170.1290.1220.1180.107
0.1380.1380.1110.1380.1380.1460.0780.0780.138
0.0930.0930.1610.0930.0930.1850.0580.0580.182
0.0680.0680.2180.0680.0680.2350.0460.0460.227
0.0560.0560.2660.0560.0560.2800.0400.0400.261