Load Measurement on Foundations of Rockfall Protection Systems

Rockfall protection barriers are connected to the ground using steel cables fixed with anchors and foundations for the steel posts. It is common practice to measure the forces in the cables, while to date measurements of forces in the foundations have been inadequately resolved. An overview is prese...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2016-01, Vol.16 (2), p.174-174
Main Authors: Volkwein, Axel, Kummer, Peter, Bitnel, Hueseyin, Campana, Lorenzo
Format: Article
Language:English
Subjects:
Boundary conditions
Calibration
foundation
Foundations
Load
Measurement methods
net barrier
post
Protection systems
Rockfall
Sensors
Strain gauges
testing
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Summary:Rockfall protection barriers are connected to the ground using steel cables fixed with anchors and foundations for the steel posts. It is common practice to measure the forces in the cables, while to date measurements of forces in the foundations have been inadequately resolved. An overview is presented of existing methods to measure the loads on the post foundations of rockfall protection barriers. Addressing some of the inadequacies of existing approaches, a novel sensor unit is presented that is able to capture the forces acting on post foundations in all six degrees of freedom. The sensor unit consists of four triaxial force sensors placed between two steel plates. To correctly convert the measurements into the directional forces acting on the foundation a special in-situ calibration procedure is proposed that delivers a corresponding conversion matrix.
ISSN:1424-8220
1424-8220
DOI:10.3390/s16020174