| 摘要 |
<p>A measuring device for detecting impact stresses on a protection barrier (B), wherein the barrier (B) comprises a plurality of posts (M) adapted to support at least one substantially flexible retainer element (R) for collecting falling material, and wherein each post (M) is designed to be associated with at least one foundation (F) for anchorage to a stationary support (S). Each post (M) is equipped with at least one interface element (2) designed to be anchored to the upper end (3) of the foundation (F) and to the lower end (4) of the post (M), and first detection means (5, 105) associated with the interface element (2) for measuring the compressive/tractive forces acting on the post (M) in a substantially axial direction. Second detection means (6, 106) are associated with the interface element (2) for measuring the shear stresses acting on the post (M) in a substantially transverse direction, as well as means for collecting data from the first (5; 105) and second (6; 106) detection means, for instantaneous detection of the multi-axial stress state of the corresponding post (M) upon impact.</p> |
