Solutions

In high-intensity seismic regions, earthquakes cause greater damage to bridges. This is particularly true for long-span prestressed concrete continuous girders. Due to the significant self-weight of the girder, the effects of seismic action are more pronounced. During an earthquake, the seismic forces can easily exceed the horizontal bearing capacity of components such as supports and bearing pads. If left uncontrolled, this may lead to serious catastrophic consequences.

The solution employs high-load-bearing and large-rotation dampers. The high-load-bearing damper has sufficient damping energy dissipation capacity, which can effectively reduce the seismic action effect and mitigate seismic forces. Meanwhile, since lateral bearings are generally not installed for long-span prestressed concrete continuous beams, the damper is required to bear seismic forces from all possible directions, which necessitates a larger rotation capacity of the damper. This solution addresses the seismic action effect on bridges in any direction, reduces seismic forces, and protects relevant structural components such as bearings and bearing pads. Its core advantage lies in excellent seismic reduction performance and the ability to withstand seismic actions from any direction.