Spherical Bearing
Spherical bearings are commonly classified into three types based on their degree of freedom: fixed, guided, and free sliding. They allow for rotation because two curved sliding surfaces in the bearing can rotate against each other. Fixed and guided bearings are designed to support horizontal loads. In guided and free sliding bearings, the Teflon plate and stainless steel plate form a sliding surface, which allows for the horizontal movement of the superstructure. Additionally, spherical bearings can be equipped with anti-uplift devices according to structural requirements. Compared to pot bearings, spherical bearings have a wider range of rotational angles, which can be useful for the construction of atypical bridges.
Description
Nominal vertical load: 10 to 2500 tons.
Nominal horizontal load: 0 to 500 tons.
Horizontal displacement: +/- 0 to +/- 800 mm.
Maximum rotational angle: +/- 0.04 rad.
This device has obtained EU certification.
CE 0370-CPR-2610
- Customized design can be made according to the requirements and structure properties.
- Excellent durability and virtually maintenance-free.
- Easy for installation.
Spherical bearings are a type of structural bearings used in construction to support vertical loads. They are designed to allow the structure to move and rotate in response to external forces, and can also resist horizontal loads or uplift forces. It is important to note that they can be connected to both steel and reinforced concrete superstructures and substructures.
- ASTM A709 Gr.50 steel plate or equivalent
- Natural rubber
- PTFE
- ASTM A240 Type 316L stainless steel plate or equivalent
PTFE can be replaced with other polymer materials if required.
References
Sanguang River Crossing Bridge (2020)
Source: https://www.pcc.gov.tw/
Fugue Bridge (2010)
Source: https://www.thb.gov.tw/
