Application of mobile load

The principle of the utilisation of influence lines is in the superposition of load cases in such a way that we get a mobile load-system consisting of various concentrated and distributed loads simulating e.g. a train.

The load-system used for the simulation of moving loads (e.g. trains, trucks on a motorway) can be divided into two types:

• a simple load-system,

• an advanced load-system.

The calculation of the response of influence lines on mobile loads requires a few parameters derived from the curve of an influence line. Each possible position of a load-system must be evaluated independently, so that the most critical position can be determined.