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Several steps must be made in order to perform the calculation and design of a structure where standard loads (wind, snow, etc.) are combined with mobile load.
Input the structure and at least one load case of self-weight type.
Define one or more tracks in the project.
Run the linear calculation.
The influence lines created by a move of a unit load along the structure are stored for each internal force, reaction and deformation component in each fixed section of the structure. The influence lines can be viewed in the tree menu Mobile loads > Influence lines.
Define a simple or advanced load system that represents the intended mobile load. Use the tree menu function Mobile loads > Load system database.
As soon as the mobile load is defined, the calculation of the utilisation of influence lines can be performed. Use the required function from the branch of the tree menu Mobile loads > Detail analysis to review the results.
Once the calculation of influence lines has been performed, it is possible to combine the results of influence lines with the results of standard load cases acting on the structure. Create load case combinations consisting of generated "mobile" load case(s) and standard load case(s). Use service Results to view the result values.
The list of load cases (in the Load case manager, in the dialogue for the definition of a load case combination and also in the available load cases for the display of results) contains the load cases that have been automatically generated and added during the evaluation of influence lines. You must bear in mind that these envelopes only represent the found extremes and not the positioned load system. These loading envelopes can only be considered as a result of action of a virtual loading (load whose effect is the envelope). Therefore, it is unsuitable to use these envelopes for the design and checking of steel members in the structure.