2025 Volume 81 Issue 13 Article ID: 24-13536
The single spherical sliding bearing is a seismic isolation device in which a slider moves on a concave sliding surface. Highly durable sliding materials must be used in spherical sliding bearing in bridges. In this study, shaking table tests were conducted using a highly durable sliding material for bridges to examine the effects of velocity, surface pressure and temperature dependencies on dynamic behavior. As a result, the velocity dependency on of the friction coefficient increased with increasing velocity, and the friction coefficient tended to increase around zero velocity due to the stick-slip phenomenon. The friction coefficient was also increased with the increasing velocity, especially at low surface pressure. The coefficient of friction decreased with increasing temperature and increased at low surface pressure. A series of analyses l incorporating these dependencies was carried out to simulate the shaking table experiment, and the experimental results ware accurately simulated.