Influence of Abutment Stiffness and Strength on the Seismic Response of Horizontally Curved RC Bridges in Comparison with Equivalent Straight Bridges at Different Seismic Intensity Levels
Table 5
Modal periods (s) obtained from OpenSees and CSI-Bridge software.
Bridge typology
Mode
OpenSees
CSI-Bridge
Difference (%)
Straight
1
1.06
1.07
0.48
2
0.95
0.92
3.42
3
0.69
0.72
4.51
4
0.56
0.56
0.25
Horizontally curved with the subtended angle of 90 degrees
1
1.05
1.06
0.57
2
0.94
0.90
3.72
3
0.68
0.71
4.46
4
0.59
0.60
1.22
Horizontally curved with the subtended angle of 180 degrees
