Truss Bridge Designer

Application ID: 30831


The Truss Bridge Designer app is an example of how to design a simulation tool for a class of civil engineering structures, in this case a Pratt truss bridge. Such a bridge is characterized by the diagonal beams on each side of the bridge, which all slant down and in toward the center of the span. Because of this design, the diagonal beams are subjected only to tension, while the vertical beams, which are shorter and thereby less sensitive to buckling, undergo compression.

In the app, you can change all of the major geometrical dimensions of the roadway and the supporting beams. You can also provide loading in terms of any number of trucks and a sideways-acting wind load. In addition to the stationary study, which computes the displacements and stressed caused by the loads, you can compute the natural frequencies of the bridge.

This application example illustrates applications of this type that would nominally be built using the following products: