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Computerized Visual Inspection System &
Structural Health Monitoring of Rion Antirion
Viaduct
IBC - June 4th 2008
Benoit KROELY - ADVITAM
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Agenda
Project description
Periodic Inspection
Structural Health
Monitoring
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Project Description
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Rion-Antirion environment & design loads
RN RN
65 m.
PROJECT BRIEF DESCRIPTIONRION-ANTIRION ENVIRONMENT & DESIGN LOADS
Design Loads:
Earthquake with a return period of 2000 yrs or 5%
possibility of exceedance in 120 yrs (operational life)
Tectonic movements of 2m in all directions between
adjacent piers
Wind speeds up to 266km/h
Ship collision of 180000t DWT approaching at a
speed of 16 knots
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Main Bridge
Cable-stayed Bridge of 5 spans Shallow foundation on reinforced soil
Continuous deck fully suspended from the top of pylons
Dissipation system
286 560
2252
560 560 286
PROJECT BRIEF DESCRIPTION MAIN BRIDGE
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Construction
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Structural Risk Analysis
D fi iti f th t
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Definition of the system
12
3
Likelihood
Severity General surveillance : visual, ndt, post incident =
Inspection & Maintenance Manual
Continuous monitoring: when visual inspection is not sufficient
(no detection, not enough reactivity or too expensive)
Structural Risk Analysis
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Organization chart
STRUCTURAL MAINTENANCE MANAGEMENTORGANIZATION CHART
Gefyra SA
(Concessionaire)Gefyra SA Structural Dpt
Gefyra Litourgia SA
(Operating Company)Regular Maintenance
Laboratories for
NDTs & DTs
Heavy Maintenance
Inspections &,
Regular Maintenance
Structural
Monitoring
Geometrical
Monitoring
Instrumented
MonitoringSpecialized
MaintenanceDomain of responsibilities:
Operation & Routine
Maintenance
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Periodic Inspection & Structural
Maintenance Management
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M th d f i ti & D t M t
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Method of inspections & Data Management
1. Computerized Inspections.
Customized software (ScanPrint) according to the Maintenance Manual requirements wasdeveloped by Advitam for the Inspection missions and the data management
Defects type and position is clearly defined (drawings, photos, etc)
Handheld computers are used by the inspectors
2. Inspection Data Management Data are stored in a database (easy historical retrieving)
Minimized interfaces from inspection to analysis
Automatic factual reports are issued
Analysis report and recommendations for the deteriorated areas treatment is provided by
the inspection company Statistical analysis for the rating, evolution, location of each defect type will be available
Objective: Optimized long-term maintenance program.
STRUCTURAL MAINTENANCE MANAGEMENTMETHOD OF INSPECTIONS & DATA MANAGEMENT
Inventory large bridge
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Dynamic lists of data
Dynamic documentlibrary
Quick access to data
Advanced photomanagement
Advanced drawingmanagement
Inventory large bridge
Main Accesses in Piers & Pylons
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Main Accesses in Piers & Pylons
STRUCTURAL MAINTENANCE MANAGEMENTMAIN ACCESSES IN PIERS &PYLONS
Access shall be sufficient todetect relevant refects
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General calendar of intervention defined per
group of element
Time
CONTROL PERIODICITY
5
years
10
years15
years
Time
5
years
10
years15
years
CONTROL PERIODICITY
Periodic Inspections (Routine and Structural)
Ageing of
structure
Ageing of
materials
Regular Inspections Check List
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Checklists
Rating system
Photos
Comments
Sketches
DocumentsMaintenance recommendations
Regular Inspections
Check List
Computerized detailed inspection: Inspection drawings
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Computerized detailed inspection: Inspection drawings
Defect database
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Defect database
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Structural Health Monitoring
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Structural Monitoring System
100 Sensors more than 300 channels
Real Time Information, up to 500 Hz per sensors
Fully customizable system
Specified during design
Installed to follow construction
Used to manage operation
Maintenance Management Detection of defects
Control of maintenance actions
Traffic management
Design calculations
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3D Accelerometers
Monitoring of vibration of Ground
Deck
Pylons
Stay
Wind & Earthquake characterization.
Verification of parametric excitation
RION ANTIRION BRIDGE MONITORING Sensors Mounting AdvitamRION ANTIRION BRIDGE MONITORING Sensors Mounting Advitam
3D ACCELEROMETER ON PYLON
36363535 1212
EE
EaEaZ
X or Y
General bridge orientation
Sensoraxes orientation
Note for eachsensor
General bridge
orientation
Sensoraxes
orientation
X+
Y+
Z+
3636 4848
4747
X
Z
XX
Z
4444
4545
!!
Top an Deck (T and D) accelerometer
are +/-20g rangeand Bottom (B) are +/-3g
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2D Tiltmeters
Real time inclination of pylon
Geometric control
RIONANTIRIONBRIDGE MONITORING Sensors Mounting AdvitamRIONANTIRIONBRIDGE MONITORING Sensors Mounting Advitam
Z
X
ZZ
X
3DACCELEROMETER ONDECK
4747 4444
3636
4848
3636
3535
1212
45
(cable)
45
(cable)
+
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Load Cells & Tensiomag Sensors
Dynamic & Static tension in stays
Bridge balancing
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Displacement sensors
Joint opening
Thermal gradient characterization
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Strain gages
Loads on fuse & gussets
Wind & Earthquake characterization
Fatigue analysis
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Meteorological Stations
Wind Speed, Direction, Temperature, Relative
Humidity
Two stations Top of Pylon
Deck Level
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Water level in pylons
Filling of piers with water was identified as a critical
risk
Prevention of settlement of a pier
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Road Temperature
Trafic management
Acquisition Unit &
UPS S stem
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Data acquisition and
Transmission System
UPS System
Optical Fiber
Network
Junction box
HEALTH MONITORING IN ACTIONDATA ACQUISITION & TRANSMISSION SYSTEM
Brief description of the system (Contd)
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Earthquake
monitoring
Advanced alarm
management
Brief description of the system (Cont d)
Main functions of the Bridge Monitoring software
Global view of
sensors foralerts
Real timemeasurements User defined
graphics
Datamanagement
History of actions
(log file)
Acquisition
parametersThresholds
definition
STRUCTURAL MONITORING
BRIEF DESCRIPTION OF THE SYSTEM (CONTD)
Structure and system surveillance
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y
After Earthquakes
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te a t qua es
EARTHQUAKE !
Automatic modification of
acquisition parameters
Automatic Data treatment
Automatic Report, Mail and
Phone Call
Automatic event detection
Monitoring Report Level 1
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o o g epo e e
ACTION PLAN (NEW) MONITORING REPORT LEVEL 1 (CONTD)
Part 1: Reports form (void) Reports form (completed)
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Conclusions
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The Inspection-Maintenance and Monitoring
program applied on the Rion-Antirion Bridge
ensures:
1. The continuous structural monitoring of the Bridge maintaining
the high-level of safety to the users.2. The advanced detection of possible deterioration with minimum
inspection time with the computerized inspection software
(ScanPrint).
3. The storage of all the inspection data in one single database.
4. The time-effective management of inspection data.
5. The optimization of maintenance (cost and time reduction, less
traffic restrictions).
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RION-ANTIRION BRIDGE
Q&A