Optimisation of Longitudinal Seismic Energy Dissipation System for Straddle-type Monorail-Cum-Road Long-Span Cable-Stayed Bridge

Table 6

Longitudinal structural response of the four schemes viscous damper setting positions.

Viscous damper setting position	Scheme 1	Scheme 2	Scheme 3	Scheme 4
Displacement of the top section of the main tower (m)	0.617	0.531	0.513	0.460
Displacement of the end section of the main girder (m)	0.473	0.399	0.403	0.355
Relative displacement of the main girder between the main bridge and the approach bridge (m)	0.153	0.053	0.077	0.052
Bending moment at the bottom section of the main tower (MN·m)	4379.1	4254.7	4222.9	4165.1
Bending moment at the bottom section of the auxiliary pier (MN·m)	664.9	511.0	668.9	514.8
Bending moment at the bottom section of the transitional pier (MN·m)	586.2	589.3	677.3	679.2
Damping force of the damper at the main tower (kN)	3433.4	3385.7	3391.5	3375.6
Damping force of the damper at the auxiliary pier (kN)	—	3329.0	—	3304.8
Damping force of the damper at the transitional pier (kN)	—	—	3116.9	3000.8