Role of the interface between distributed fibre optic strain sensor and soil in ground deformation measurement.

ABSTRACT: Recently the distributed fibre optic strain sensing (DFOSS) technique has been applied to monitor deformations of various earth structures. However, the reliability of soil deformation measurements remains unclear. Here we present an integrated DFOSS- and photogrammetry-based test study on the deformation behaviour of a soil foundation model to highlight the role of strain sensing fibre-soil interface in DFOSS-based geotechnical monitoring. Then we investigate how the fibre-soil interfacial behaviour is influenced by environmental changes, and how the strain distribution along the fibre evolves during progressive interface failure. We observe that the fibre-soil interfacial bond is tightened and the measurement range of the fibre is extended under high densities or low water contents of so

SUBMITTER: Zhang CC 

PROVIDER: S-EPMC5101507 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature