How The Nodes Of The Stage Truss Are Best Hinged

A true truss structure must act on the joints when subjected to an external load. The load will be borne by the entire members in a simple compression or tensile manner. The joints only transmit the linear force of the members, and bear the shear force. Bending moment. In this case, the linear members can be either hinged or rigidly connected, depending on the convenience of the construction and the appearance and shape. There is no difference in the force, and there is no need to strengthen the joints.

Truss structures generally cannot apply loads to linear members. When a load is applied to a member, if the joint is articulated, only the loaded member will bear the bending moment in the form of a simply supported beam, and the other members will not participate in the load. As a result, the bent member must be strengthened, while the other members are simply superfluous. If the joints are rigidly connected, each member will be bent as a whole in the form of a rigid frame. Not only the member itself, but also its joints will undergo a large bending moment, which needs to be strengthened.