For the cable-stayed bridge under consideration, a functionally separated bearing system is planned. Under conditions such as eccentric live-load application and seismic excitation, uplift forces are expected to develop at the bearing locations. Conventionally, counterweights (e.g., concrete blocks) have been installed to resist these uplift forces. However, this method increases the dead load, thereby amplifying the inertial forces during earthquakes, which poses a significant design challenge. Based on this, a bidirectionalsliding bearing equipped with an uplift resistance mechanism capable of maintaining sliding functionality even under uplift conditions has been proposed.
