Retracted Article: Effects of bulk cargo displacements on changes in truck axle loads

Abstract

Changes in road legislation and trucking regulations have led to the need to take into account the maximum axle loads that arise during road transport. In particular, this task is relevant when transporting bulk cargo because when braking or accelerating trucks (road trains), when driving on a longitudinal gradient, or when driving on curves, there can be a displacement of part of the cargo relative to the axles of the vehicle. In article results of experimental research of displacements of loose cargo (gravel, crushed stone) at transportations and their influence on change of axle loadings of cargo vehicles are resulted. During the research the level of loose cargo in semitrailer truck-trailer before and after the experiment was measured, axle load weighing and full train weight weighing was made, in addition video recording of loose cargo displacement was made. Conducting the analysis of experimental data of axial weighing we found out that during transportation of loose cargo its redistribution inside semi-trailer takes place, and it in its turn leads to change of axle loads of road-train. The axle load variations were outside the measurement error range of 1.4 to 4.9%. A further proof of the shifting of the bulk load in the semi-trailer was the video recording of the load in transit. The analysis of the videos showed that both crushed stone and gravel shifted in the semitrailer when the vehicle was moving at high speed. As a result of this work, an experimental confirmation of the fact that the bulk cargo is shifted relative to the sides of the semi-trailer during braking and this shift leads to changes in the axle loads of trucks was obtained.