Axial load identification of a slender pre-stressed concrete beam

The paper brings out the axial load identification of a slender pre-stressed concrete beam by applying a concentrated load and measuring the flexural displacements in different points of the beam span under investigation, by using optical and dial gauge sensors system. The Simplified Formula and the Tullini’s formula [Tullini, 2013] are the non-destructive methods for the axial load identification which can be found in the paper. A 3D Frame and a 3D Bridge prototype were used to verify the accuracy of the two non-destructive procedures