[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Inaudi et al., 2019 - Google Patents

Full-length tunnel structural monitoring

Inaudi et al., 2019

View PDF
Document ID
9864277254307688733
Author
Inaudi D
Walder R
Publication year
Publication venue
Proceedings of the Structural Health Monitoring, Stanford, California

External Links

Snippet

New and existing tunnels can present structural risks related to surrounding geotechnical and hydrological conditions as well as unknowns related to design assumptions and construction materials. Such risks can materialize through the apparition of abnormal …
Continue reading at roctest.com (PDF) (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35338—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using other arrangements than interferometer arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using change of colour or translucency
    • G01K11/125—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using change of colour or translucency using change in reflectance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/08—Testing of mechanical properties
    • G01M11/083—Testing of mechanical properties by using an optical fiber in contact with the device under test [DUT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmission, scattering or fluorescence in optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum

Similar Documents

Publication Publication Date Title
Tanimola et al. Distributed fibre optic sensors for pipeline protection
US9561812B2 (en) Monitoring transport network infrastructure
Rajeev et al. Distributed optical fibre sensors and their applications in pipeline monitoring
Ferdinand The evolution of optical fiber sensors technologies during the 35 last years and their applications in structure health monitoring
Iten et al. Landslide monitoring using a road-embedded optical fiber sensor
CN103821507B (en) Shaft wall distortion distribution type fiber-optic detection method
Hill Distributed acoustic sensing (das): Theory and applications
CN105547364B (en) The splice type distributed optical fiber sensing system of roadbed internal monitoring
Sasi et al. A review on structural health monitoring of railroad track structures using fiber optic sensors
CN111456716B (en) Underground strain distribution monitoring system and method based on distributed optical fiber sensing
EP2906968A1 (en) Method for monitoring soil erosion around buried devices, instrumented device and system implementing the method
Zhang et al. Distributed fiber optic sensors for tunnel monitoring: A state-of-the-art review
Jiang et al. Real-time monitoring method for unauthorized working activities above the subway tunnel based on ultra-weak fiber Bragg grating vibration sensing array
Inaudi et al. Full-length tunnel structural monitoring
Yin et al. Toward establishing a multiparameter approach for monitoring pipeline geohazards via accompanying telecommunications dark fiber
Schenato et al. On the use of OFDR for high-spatial resolution strain measurements in mechanical and geotechnical engineering
CN111239842A (en) Rainwater invasion optical cable monitoring system and method based on distributed optical fiber sensing technology
Lienhart et al. Distributed Fiber Optic Sensing on a Large Tunnel Construction Site: Increased Safety, More Efficient Construction and Basis for Condition-Based Maintenance
KR102197696B1 (en) Structure health monitoring system using optic fiber-based hybrid nerve network sensor, and method for the same
Inaudi et al. Detection and localization of micro-leakages using distributed fiber optic sensing
Ravet et al. Retrofiting existing optical fiber infrastructure to mitigate geohazard risk: The TGP case
Ravet et al. Simple method for DTS/DSS data interpretation: an application to pipeline geotechnical monitoring
Lombera et al. Experimental demonstration of a leakage monitoring system for large diameter water pipes using a fiber optic distributed sensor system
Johansson et al. Distributed fibre optic sensing in Swedish dams and tailing storage facilities
Inaudi Distributed Optical Fiber Sensors for Strain and Deformation Monitoring of Pipelines and Penstocks.