How to judge whether the joint of steel structure is rigid or hinged, as shown below, the steel beam and steel column are all channel steel and welded through weld joint.
A hinge: as the name suggests, the theory is completely unable to bear joint moment, and generally cannot be used for splicing component connection; hinged joints are usually only used for connecting end members, such as the end of the column and beam connections.
I don't think we can generalize. The connection of the steel structure is mainly welding seam connection and bolt connection; generally speaking, the welding seam is just connected, but the bolt is not necessarily. The bolt section, there are friction; if the friction force of the bolt section is far greater than the moment, so it can be identified as rigid; if the two force magnitude close, then identified as articulated, and to check the moment.
Distinguishing between rigid connections and hinged joints is only to simplify calculation. In fact, there is no absolute hinge and rigid connectionAbout rigid connection: as the rigid node of component, from the original mechanical characteristic of the retaining member, it should ensure its original continuity at the connection point and transfer the bending moment
