Fiber optic cables for distributed fiber optic strain sensing are being used for integral deformation monitoring of civil engineering structures for several years. This work shows the applicability of distributed fiber optic strain sensing in different hydraulic engineering and soil structures. Besides basic tests on strain sensing cables, tests for crack detection and crack width evaluation in different concrete structures were conducted: A concrete column, a concrete beam and a roller compacted concrete (RCC) block. In-situ measurements were carried out at an RCC dam and at a landslide to evaluate the sliding zone and relative surface movements. Preliminary tests concerning measurements in embankment dams were also carried in the laboratory. The applicability of distributed fiber optic strain sensing could generally be proved for all structures. This applies for the installation as well as for the accuracy for strain detection and crack width evaluation.
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Fiber optic cables for distributed fiber optic strain sensing are being used for integral deformation monitoring of civil engineering structures for several years. This work shows the applicability of distributed fiber optic strain sensing in different hydraulic engineering and soil structures. Besides basic tests on strain sensing cables, tests for crack detection and crack width evaluation in different concrete structures were conducted: A concrete column, a concrete beam and a roller compacte...
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