Overall Conceptual Seismic Design and Local Seismic Capacity Design for Components of Bridges - Structural Seismic Design Optimization and Earthquake Engineering - page 281

Figure 8. Finite element model of the cable-stayed bridge with elastic cables

Figure 9. Fundamental period versus elastic cable stiffness

Table 6. Vibration mode versus elastic cable stiffness

Mode
order

Elastic cable stiffness (kN/m)

0 5×10 5 30×10 5

1 Girder longitudinal drift Girder longitudinal drift Tower lateral bending in same direction

2 Tower lateral bending in same direction Tower lateral bending in same direction Reversely symmetric vertical bending

3 Reversely symmetric vertical bending Reversely symmetric vertical bending Tower lateral bending in different direc-

tion

4 Tower lateral bending in different direc- Tower lateral bending in different direc- Girder longitudinal drift