Seismic evaluation of the bridge with a hybrid system of cable and arch: Simultaneous effect of seismic hazard probabilities and vertical excitations

چکیده مقاله

There are many parameters that affect the seismic behavior of the bridge,
especially in the new type of bridges. In this research, the seismic behavior
of a cable-arch bridge as a new type of bridge with a hybrid system of an
arch and stay cables has been studied considering the effect of seismic
hazard probabilities and vertical excitations. By considering these parameters,
the seismic analysis was investigated in three steps: Response spectrum
analysis to obtain general seismic behavior of the bridge, time-history
analysis using seismic ground motion records to capture dynamic
responses, and pushover analysis to determine the capacity of the bridge.
The performance of the bridge was monitored, and the significance of considering
seismic hazard probabilities and vertical excitations was investigated.
Pointing out the effects of these parameters on the seismic
behavior of the bridge, the results indicated a requirement for considering
them to provide the seismic safety of the bridge.