Compared to the superstructure, seismic isolation layers typically have lower horizontal stiffness. While wind resistance is generally manageable for upper floors due to their high rigidity, seismic isolation structures require special attention because isolation bearings exhibit low horizontal stiffness and yield strength.

PTFE sliding rubber bearings—incorporates a polytetrafluoroethylene (PTFE) layer to reduce friction, significantly altering their performance characteristics. Investigating the effects of natural corrosion on the mechanical properties of PTFE sliding rubber bearings holds critical engineering relevance.

Bridge seismic isolation bearings must meet the following core criteria: basic performance requirements, system reliability, and structural design specifications.

In bridge engineering, elastomeric bearings are the unsung heroes that absorb vibrations, accommodate movements, and distribute loads. The choice between natural rubber bearings (NRB) and chloroprene (neoprene) rubber bearings (CRB) often puzzles structural engineers.