Elastomeric bearings in bridges are essential structural components that play a crucial role in ensuring the safety, stability, and longevity of bridges. Constructed from durable and flexible elastomeric materials, these bearings provide critical support and flexibility, allowing bridges to withstand various loads and movements while maintaining structural integrity.
Benefit: Elastomeric bearings improve bridge performance by isolating the superstructure from substructure movements, reducing stress concentrations, and minimizing vibration. As a result, bridges can endure high traffic loads, thermal expansion, and seismic events without compromising structural integrity.
How To Do:
Property | Value |
---|---|
Compressive Strength | 10-20 MPa |
Shear Modulus | 0.5-2.5 MPa |
Elongation at Break | 250-400% |
Benefit: Elastomeric bearings extend bridge lifespan by protecting the superstructure from corrosion, fatigue, and other environmental factors. The flexible nature of elastomeric materials allows for expansion and contraction, preventing damage from thermal cycling and creep.
How To Do:
Property | Value |
---|---|
Corrosion Resistance | Excellent |
Creep | |
Relaxation |
According to the American Association of State Highway and Transportation Officials (AASHTO), elastomeric bearings are widely used in modern bridge construction due to their:
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