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Sunshine Skyway Health Monitoring - BrMUG - Skyway... · 2013-07-07 · • Structural Health...

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Sunshine Skyway Health Monitoring By: Gregory Deese
  • Sunshine Skyway Health MonitoringBy: Gregory Deese

  • Outline• Skyway Background• Existing Monitoring System• Future Monitoring System

    – Data Acquisition– Sensor Types

    • Structural Health Monitoring Goals

  • Sunshine Skyway Background• Cable stayed and PT segmental concrete


    • Opened in 1987

    PresenterPresentation NotesExpected Design Life: 100 years, Vertical Clearance: 175 feet, Total Length: 4.14 miles

  • Sunshine Skyway Bridge Location

  • Current Monitoring System

    • GPS Receivers• Automatic Total Stations• Weather Stations• Analytical Model

    PresenterPresentation NotesDiscuss basis in maintenance manual and evolution of system.

  • GPS System

    • Current GPS Sensors– Leica RS500


    – L1/L2 Signal Reception

    – Post-processed accuracy of 1 centimeter in x and y planes

  • GPS Receiver Locations

    PresenterPresentation NotesGive background as to why each of these locations were chosen for GPS receivers.

  • Future GPS Upgrade

    • Upgraded Leica GPRX 1200+ system included in current rehabilitation project

    • GLONASS/Galileo/Compass compatible

    • New system running by end of 2011

    PresenterPresentation NotesCurrent system will be obsolete in several years. New system will accept legacy signals as well as modern L2C and L5 signals as well as other GNSS satellites. The new system will be able to consistently see more satellites and maintain high accuracy more consistently.

  • Automatic Total Stations

    • Leica TCA2003 ATS on Dolphin 101

    • One additional ATS to be added

    • Accuracy to 1 millimeter

    • Redundancy for GPS

    PresenterPresentation NotesProfile surveys, settlement detection

  • ATS Lines of Sight

  • Weather Station

    • Weather Sensors– Wind Speed/Direction– Temperature/Humidity– Barometric Pressure– Internet-connected with

    live web-cams

  • Weather Station

    • Datalogger System• Expandable channels• 100 Hz max sampling• Expandable for a

    variety of sensors

    • Wireless radio capabilities

  • Weather Station Website

    • Tabular and graphical data available• Website updated every 15 minutes

  • Weather Station Sensor Locations

  • Data Connection/Storage

    • GPS/ATS Receivers– Uses wireless technology– Differential base station at north rest area

    • Weather Station– Uses cellular modem technology

    • ITS Upgrade– Fiber optic hardwired to bridge and dedicated

    cabinets with filtered power for GPS/weather station

  • Structural Health Monitoring (SHM)Purposes and Goals:

    • Design verification (with analytical model)• Establish normal movement• Extreme event monitoring• Deterioration/settlement detection

  • Design Verification– Theoretical estimation of time-dependent stay

    forces to compare with empirical test results

    – Calibration/verification of GPS readings

    PresenterPresentation NotesTalk about cable force estimation from EOR. As well as profile surveys referenced by Maintenance Manual.

  • Analytical Model

    • Time-dependent frame analysis model• MIDAS Civil software used• Main model P6S (106) to P6N (117)

    PresenterPresentation NotesSegmental Construction staging included.

  • Wind Analysis Graphical Results

    1.37 ft

    1.01 ft

    PresenterPresentation NotesExtreme wind load case in analytical model.

  • Normal Operating Parameters

    PresenterPresentation NotesEstablish footprint of movement for bridge.

  • Extreme Event Monitoring• Hurricane effects• Ship Impact• Other Impacts

    PresenterPresentation NotesLife Safety/First Responder events require quick analysis to ensure bridge is safe for personnel. This could not be accomplished with a true finite element model due to time constraints.

  • Future Goals

    • Calibrated analytical model• Additional sensors

    – Strain measurements– Stay vibration measurements– Thermal measurements

  • Any Questions?

    Sunshine Skyway Health MonitoringOutlineSunshine Skyway BackgroundSunshine Skyway Bridge LocationCurrent Monitoring SystemGPS SystemGPS Receiver LocationsFuture GPS UpgradeAutomatic Total StationsATS Lines of SightWeather StationWeather StationWeather Station WebsiteWeather Station Sensor LocationsData Connection/StorageStructural Health Monitoring (SHM)Design VerificationAnalytical ModelWind Analysis Graphical ResultsNormal Operating ParametersExtreme Event MonitoringFuture GoalsAny Questions?