IMPULSE RESPONSE METHOD APPLIED TO THE GROUND ANCHORS

The test, a mechanical impulse in the axis of the tie rod, leads to obtain a vibrational response of the tested element. This allows to calculate the total and free lengths of the tie rod. The dynamic stiffness obtained from this vibratory response is related to the tensile force in the tie rod. This article concerns the analysis of tension forces values in tie rods less than 3 months and 4 months after their construction. The results are interesting and raise the question of controlling the tensioning process of tie rods