Elastomeric bearing pads are laminated elastomeric sheets made by bonding steel plates or shims to elastomeric layers. They are used to support and distribute loads between structural elements in bridges, buildings, and other structures.
According to the American Society of Civil Engineers (ASCE), elastomeric bearing pads account for approximately 80% of all bridge bearings used in the United States. They are popular due to their high load-bearing capacity, durability, and cost-effectiveness.
There are two main types of elastomeric bearing pads:
Elastomeric bearing pads offer several advantages over other types of bearings:
- High load-bearing capacity: They can support loads of up to 10,000 psi.
- Durability: They are resistant to weathering, ozone, and chemicals.
- Cost-effectiveness: They are relatively inexpensive to manufacture and install.
- Easy to install: They can be installed quickly and easily with minimal equipment.
- Low maintenance: They require minimal maintenance and can last for decades.
Elastomeric bearing pads are used in a wide variety of applications, including:
- Bridges: They are used to support the superstructure of bridges and distribute loads to the substructure.
- Buildings: They are used to support columns, beams, and other structural elements in buildings.
- Industrial structures: They are used to support heavy machinery and equipment in industrial facilities.
- Seismic isolation: They are used to isolate structures from seismic forces.
Elastomeric bearing pads have been used successfully in numerous projects around the world. Some notable examples include:
To get the most out of elastomeric bearing pads, consider the following strategies, tips, and tricks:
Avoid the following common mistakes when using elastomeric bearing pads:
Some advanced features that are available on elastomeric bearing pads include:
Elastomeric bearing pads have some challenges and limitations to consider:
Some potential drawbacks of elastomeric bearing pads include:
The risks associated with elastomeric bearing pads can be mitigated by taking the following steps:
Advantages | Disadvantages |
---|---|
High load-bearing capacity | Cost |
Durability | Durability |
Cost-effectiveness | Maintenance |
Easy to install | Creep |
Low maintenance | Ageing |
Application | Example |
---|---|
Bridges | Golden Gate Bridge |
Buildings | Burj Khalifa |
Industrial structures | Seismic isolation |
Seismic isolation | Sydney Harbour Bridge |
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