Seismic Collapse Analysis of RC Highway Bridges Based on a Simplified Multiscale FE Modeling Approach

Table 1

Natural frequencies of structures (Hz).

Frequency	Model 1	Model 2	Model 3	Model 4	Model 5
1	3.92 × 10^1	4.03 × 10^1	3.95 × 10^1	3.97 × 10^1	4.06 × 10^1
2	1.68 × 10^2	1.71 × 10^2	1.72 × 10^2	1.71 × 10^2	1.74 × 10^2
3	2.37 × 10^2	2.42 × 10^2	2.43 × 10^2	2.43 × 10^2	2.48 × 10^2
4	5.18 × 10^2	5.30 × 10^2	5.31 × 10^2	5.31 × 10^2	5.44 × 10^2
5	6.28 × 10^2	6.31 × 10^2	6.32 × 10^2	6.32 × 10^2	6.32 × 10^2