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.

Seismic isolation bearings, particularly lead rubber bearings, are revolutionizing earthquake-resistant construction in the Philippines.

Other mechanical performance testing indicators include shear aging resistance, shear bonding performance, etc. This article mainly discusses the testing process of ultimate compressive strength, compressive elastic modulus, and shear elastic modulus, and points out common problems and precautions in the testing.