Theoretical basis for the development of a program for the evaluation of road bridge heavy vehicles capacity

The authors present theoretical basis for creating software for operational (on-site testing) experimental determination of the possibility of safe passage of heavy vehicles on road bridges, taking into account their actual operational condition with experimental confirmations. The features, conditions of use, and benefits of the software under development are expanded upon. The creation of the software is driven, on the one hand, by the need to ensure the safety of the driver and the bridge structure, and on the other hand, the need to assess the load capacity of the superstructures of road bridges according to the parameters of their stress-strain state to ensure guaranteed safe passage of heavy vehicles. The developed software for the operational determination of the possibility of safe passage of heavy vehicles on road bridge structures, with the consideration of their actual operational condition, is implemented using a personal computer. The software provides an assessment of the possibility of heavy vehicle passage through split and non-split systems of any length, considering the actual operational condition of the systems, while allowing to safely use any mobile load as a point of reference. The introduced software will be used as part of an upgraded system for rapid assessment of the load capacity of road bridges, developed on the basis of the SI-PPM measurement system with the addition of technical devices that increase the possibility of operational assessment of the load capacity of road bridges.