SciELO - Scientific Electronic Library Online

 
vol.90 issue2A Dual-mode model interpretation of CO2/CH4 permeability in polysulfone membranes at low pressuresGeomorphology-based unit hydrograph models for flood risk management: case study in Brazilian watersheds with contrasting physiographic characteristics author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Anais da Academia Brasileira de Ciências

Print version ISSN 0001-3765On-line version ISSN 1678-2690

Abstract

MARCONCIN, LILIANE R.; MACHADO, ROBERTO D.; LACERDA, LUIZ A. DE  and  AUFLEGER, MARKUS. Monitoring structures with optical fibers: infiltration detection. An. Acad. Bras. Ciênc. [online]. 2018, vol.90, n.2, pp.1865-1872. ISSN 0001-3765.  https://doi.org/10.1590/0001-3765201820170144.

The use of sensors and optical fibers for monitoring structures is continuously growing. Strains, displacements, accelerations, temperatures are just a few of the monitoring possibilities. In the case of dam structures, concrete face rockfill dams constitute a type of structures where the monitoring of water infiltrations is of particular interest. In large structures of this type, opening of slab joints is a common effect of general strain distributions, but crack formation may also occur as a result of high compressive stresses, during and after the reservoir filling stage. In this context, this paper verifies, experimentally, the applicability and the response of a distributed fiber optic monitoring system in the identification of infiltration spots and its potential sizes. The experimental tests confirm the technical feasibility of detecting infiltrations, but did not show clear evidence of their sizes.

Keywords : concrete face rockfill dam; infiltration; monitoring structures; optical fiber.

        · text in English     · English ( pdf )