Rigid Connections Bearing Type Connections

Rigid connections, also known as moment-resisting connections or fixed connections, are structural connections that provide resistance to rotation (moments) between connected members. These connections are designed to transfer both vertical loads and moments from one member to another, creating a rigid and stable structural system. One common type of rigid connection is the bearing type connection.

Bearing type connections are designed to transfer loads between structural members through direct contact or bearing of the connected surfaces. In a bearing type connection, the members are typically in contact with each other along their flanges or other load-bearing surfaces.

Here are some key features and considerations related to bearing type connections:

1. Load Transfer: Bearing type connections primarily transfer vertical loads, such as gravity loads, from one member to another. They rely on the bearing capacity of the connected surfaces to distribute and transfer the loads.
2. Connection Methods: The connection between the members in a bearing type connection can be achieved through welding, bolting, or a combination of both. Welded connections provide a continuous and rigid joint, while bolted connections offer some level of flexibility.
3. Load Path: The load path in a bearing type connection starts from the applied load, which is transferred to the connected surface of one member. The load is then distributed across the contact area and transferred to the connected surface of the other member. From there, the load is further distributed and transferred to the supporting structure.
4. Design Considerations: The design of bearing type connections takes into account factors such as the magnitude and type of loads, material properties, connection geometry, and specific design codes and standards. The connection must be designed to withstand the anticipated loads and ensure sufficient bearing capacity of the connected surfaces.
5. Limitations: Bearing type connections have limitations in terms of rotational and translational movement. They are not completely rigid and may experience some deflection or deformation under load. Therefore, they are not suitable for applications where strict rigidity or limited movement is required.