【New】Advantages of a triangular truss bridge

For truss bridges, static and fixed structures and statically indeterminate structures.

For bridges with statically fixed structures,

The advantages are:

The structure design is simple and the force is clear. The truss members only bear axial force, no excess force, and no bending moment and shear force;

The construction is also simple, and the truss members can be assembled according to ordinary rods.

The disadvantage is that the structure cannot coordinate the force and the load potential is less than the statically indeterminate structure.

For a truss bridge with a statically indeterminate structure,

The advantages are:

Can fully utilize the potential of the rod, save the material, the rod can not only bear the axial force, but also bear the bending moment and shear force;

But the construction is a bit more complicated (no articulated nodes, all solid nodes).

Disadvantages: The structure design is complicated, the calculation is very troublesome; the construction is not simple.