The main feature of the stage truss

What is the characteristic of the stage truss ? The truss in the stage is made of the structure of the hinge of the engineering mechanics, and the stability of the truss is made of the structure of the two - bar structure. Its main feature is:

1 under the joint load, the cross section of each of the used stage truss is only an axial force, so the stress distribution on the cross section is uniform, and the mechanical properties of the material can be fully played.

2 because the internal force of the truss is axial force, and under the condition that the shape of the truss is constant, the axial force is related to the external force, but has nothing to do with the span of the structure. For example, large industrial buildings and large span roof venues, railway and highway bridge, crane etc..