A Study on How to Reduce Vibration in order to Decrease the Cracks that Form on the Upper Floor of a Structure due to Continuous Dynamic Loading

In this study, we investigate the cracks that formed on the upper floor of the structures due to continuous dynamic loading. We explain the cause of floor slab cracks on the upper floor of the distribution center and discuss preventive measures that can enhance the center`s functions and security. In order to explain how a forklift`s excessive vibration can cause the cracks, we have measured and analyzed the vibration during a forklift`s operation and discovered that the cracks form because the vibration exceeds the vibration criteria. Using a finite element modeling on such results, we have come up with optimal methods to reduce the vibration and confirmed their validity by measuring the vibration after implementing our methods.