2023 Volume 79 Issue 13 Article ID: 22-13003
There are many railway bridges with rocking piers in urban areas. Preventing collapse of those bridges during earthquakes is an urgent concern. It is also important to improve the recovery performance by controlling the response displacement of the girders. However, to achieve both goals, it is necessary to install two different devices, damping devices and bridge collapse prevention devices, which is sometimes difficult due to limitations of space around the girders. Therefore, we developed a space-saving device with damping and bridge collapse prevention functions. We firstly confirmed the nonlinear characteristics by an elemental experiment. Then we verified the damping function, the bridge collapse prevention function, and the girder attachment part on an actual bridge by numerical simulations.
