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RION ANTIRION BRIDGE “CHARILAOS TRIKOUPIS”10 years of Uninterrupted Operation
Panayotis Papanikolas, Ph.D. Struct. Eng.
C.E.O. Gefyra S.A.
Concessionaire’s Obligations
Τ0 Τ1 Τ2
0 3 years 8 years 35 - 40 yrs
Ten
der
Fin
anci
ng
Co
nst
ruct
ion
Operation - Maintenance
120 years
1. Hand back2. Extension of C.A.
Concession term – ~30 years
2
The following obligations are among those arising from the Concession Agreement (C.A.) :
1. Implementation of the infrastructure ( Τ1, with specific cost and time schedule, particularly important
for technologically innovative constructions);
2. Safety of the user, availability of the infrastructure, ensuring the level of service (Τ2);
3. Safeguarding the Public Property (maintenance during the T2 period, technical improvements,
dealing with crises, requirements for delivery/acceptance).
10 years of Operation
Construction
Preserving the asset – inspection & maintenance
Traffic – Toll strategy
3
4
Bridge Location
BRIEF DESCRIPTION OF RION ANTIRION BRIDGE
5
Environmental Site Conditions & Main Design Loads
Weak sea-bed up to 500 m deep
Water depth up to 65 m
High-Seismicity & Strong Wind area
Tectonic movements
65 m.
0
0,3
0 ,6
0 ,9
1 ,2
1 ,5
0 ,0 1 ,0 2 ,0 3 ,0 4 ,0 5 ,0Period [s]
ps
eu
do
ac
ce
lera
tio
n
[g
]
EAK 2000
Seismic risk zone III
Soil cat "Γ "
5% damping
Importance factor I = 1,3
RION-ANTIRION
E.A.K.
• Return period 2000 years
• PGA 0.48 g, max Sa 1.20 g (0.2 up to 1.0 sec)
• Tectonic movements up to 2m (between adjacent piers
• Design Wind speed 50 m/sec (hour mean at deck level)
• Ship collision:
1. 86000 dwt bulk carrier (full laden) at 16 knots
2. 180000 dwt tanker (on ballast) at 16 knots
BRIEF DESCRIPTION OF RION ANTIRION BRIDGE
ΑΝΤΙRΙΟNRΙΟN
Shallow foundation on reinforced soil
4 R/C piers (189m to 227m height) and 2 hinged steel frame abutments
2,252km continuous, composite section deck fully suspended from the top of pylons.
Expansion joints are provided only on the two extremities. in service: +1,26/-1,15m (longitudinal direction)
in ultimate conditions: +2,81/-2,20m (longitudinal direction) and ±2,6m (transversal direction)
Dissipation system (consisted of 4 dampers on each main pier and 2 on each transition pier). in service: the deck is laterally supported by means of a restrainer (nominal load: ±10,5MN for main piers, 3,4MN for TP)
in ultimate conditions: it fuses allowing the dissipation system to absorb the induced energy (dampers stroke: 3,5m)
6
Main Bridge Characteristics and seismic design principles
286 560 560 560 286
(2252)
BRIEF DESCRIPTION OF RION ANTIRION BRIDGE
7
Construction (cont’d)
PERIOD Τ2 BRIDGE “HARILAOS TRIKOUPIS”
Construction of pier base footing in dry dock
8
Construction (cont’d)
1) Underwater foundation2) Transportation of floating part
of pier (height 67m)
PERIOD Τ2 BRIDGE “HARILAOS TRIKOUPIS”
9
Construction (cont’d)
Construction of pylons
Cantilever deck construction
Installation and adjustment/tensioning of cables
PERIOD Τ2 BRIDGE “HARILAOS TRIKOUPIS”
Τ2 Period: the need to manage the infrastructure
The infrastructure management is a major issue for the economy of all countries. It requires the
elaboration of a management system that shall have the following main objectives:
• Guarantee the safety of the users;
• Ensure a targeted level of service (that varies depending on the roads);
• Respond promptly to special events (crisis management);
• Upgrade the infrastructure (corrective works, technical improvements);
• Ensure that the heritage is preserved for future generations (long-term safeguarding of the asset).
The management system consists of a set of procedures that shall aim at ensuring the sufficient
maintenance of all constructions. It includes methods, detailed models, data processing tools,
organizational processes and the required data bases for its implementation.
10Τ2 PERIOD INFRASTRUCTURE MANAGEMENT
13
Structural Maintenance Dept: “Scope of works” Chart
GEFYRA S.A.(Concessionaire)
Structural Maintenance Dpt.
• MB & AV Structural elements & equipment
• Toll Plaza Structures
• Non-Structural equipment (E/M & other)
Monitoring
Material Monitoring
Instrumented Monitoring
Visual Monitoring (inspections)
Structural monitoring system (permanent)
Geometrical monitoring
Maintenance
Regular Maintenance (Planned)
Heavy Maintenance
Special Events Structural Management
Earthquake
Major Accident
Strong wind
Fire
Ship Collision
Additional works
Technical improvement works
Remedial works
Other projects
STRUCTURAL MAINTENANCE DPT →ORGANIZATION, SCOPE
14
Accesses
Cherry picker(Internal platform)
Cradle(Pier shaft)
Secondary platform (under the deck)
Negative platform (Rion Viaduct Offshore)
ACCESS MEANS
Inspection/maintenance
of cable stays
Expansion joint
inspection
Cleaning splash zone
with hydraulic brush
Equipping the pier head
for inspections
Visual Monitoring: Inspection levels
Level A inspectionsEvery Year
Level B inspectionEvery Two years
Level C inspectionEvery Four years
Level D inspectionYear 4 then every 8 years
An
tiri
on
Via
du
ct
Localized inspections close to bearings & dampers. Inspection of extrados and expansion joints.
Visual inspection of surfacing without specific accesses except for inspection at mid-span.
Complete detailed concrete inspection
Rio
n V
iad
uct
Inspection of the anticorrosion protection system
Localized inspections close to bearings & dampers. Inspection of extrados and expansion joints. Steel/Concrete Interface for corrosion
Check of specific checkpoints on steel and concrete. Inspection of anti up-lift device on P7 and T0.
Complete detailed concrete inspection
Mai
n B
rid
ge d
eck
Complete inspection of the intrados for checking of water infiltration and corrosion at steel/concrete interface.
Inspection of the expansion joints.
Inspection of extrados around gusset anchorage for watertightness checking.
Inspection of the anticorrosion protection system of the deck and rotating frames.
Dampers, fuses and anchorages.
10% of the cable-stays anchorages (specialized).
Visual inspection of the cable stay anchorages including EHD
Check of specific checkpoints and complete inspection on intrados steel.
Visual inspection of the concrete.
Gussets and segment 24 complete inspection.
Inspection of the rotating frames.
Complete inspection of the extrados.
Detailed visual inspection of the cable stay duct
Complete detailed concrete inspection.
Mai
n B
rid
ge
Pie
rs/P
ylo
ns
Inspection of the anticorrosion protection system of the pylon head
Complete visual inspection except submerged zone but including splash zone
Inspection of scour protection and external faces of footing & cone (submerged zone).
15MONITORING OVERVIEW → VISUAL MONITORING
16
Visual Monitoring: Tools (cont’d)
Computerized Inspections performed by in-house inspection engineers:
Inspectors use Rugged Tablet PC on site Rope access inspectors use a specially prepared paper support on site , then
data & photos are integrated by inspection engineers
Concrete inspection on Intrados with Secondary
platform
Steel deck inspection with Secondary platform
Concrete inspection with rope access in pier head
MONITORING OVERVIEW → VISUAL MONITORING
STRUCTURAL MONITORING: Instrumentation (Cont’d)
Sensors overview
MONITORING OVERVIEW → INSTRUMENTED MONITORING 17
DATA RECORDS AND APPLICATIONS (cont’d)
Data files categories• History files (0.5 sec averaged values recorded at regular
intervals)
• Dynamic files (High sampling frequency >100 Hz)
• Automatic(recorded every 2 hours)
• Alert (Recorded due to threshold overpass)
• Request (on end user demand)
Variation of induced force on deck with respect to wind
Wind occurrence calculation
MONITORING OVERVIEW → INSTRUMENTED MONITORING 18
Mode 1
Mode 318
Data Management Strategy Plan
19
Monitoring data
Data Storage Data analysis Decision
No Action
Regular/Heavy Maintenance or Major remedial/
Technical Improvement works
Specific Monitoring
Data Management
Strategy Plan
Material monitoring
NDT/DT on • Concrete• Pavement• Steel welds
Visual Monitoring (inspections)
Structural monitoring system (permanent)
Geometrical monitoring
Instrumented Monitoring
Regular Inspections Specialized Inspections
MONITORING OVERVIEW
1. Regular maintenance (e.g. steel corrosion protection, etc.);
2. Specialized maintenance (e.g. cables, joints, etc.);
3. Special events (e.g. earthquakes, strong winds, etc.);
4. Heavy maintenance (e.g. asphalt pavement replacement,etc.);
5. Technical improvements / upgrading (e.g. lighting protection system, dampers).
Maintenance
20
Structural Maintenance Works
21
Maintenance on fasteners of HSFG joints
REGULAR MAINTENANCE
Complete restoration of corrosion protection of bichromated surfaces
Exposed reinforcement (low cover)
S/N HEAVY MAINTENANCE CATEGORIES 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
1 Maintenance of pavement & joints
1.1 Pavement asphalt & concrete, footpath
waterproofing
HM
1)Applying micro-surfacing on
the Bridges
2) Corrective works at the Toll
Plaza
HM
Replacement of asphalt
pavement
1.2 Main Bridge expansion joints
1.3 Approach viaducts expansion joints HM
Replacement
2 Maintenance of concrete, steel
surfaces & Cables, IEDD system, non-
structural & E/M equipment
2.2 Cable stays & Lighting Protection
Cables
HM
Specialized inspection -
maintenance
HM
Specialized inspection
- maintenance
HM
Specialized
inspection -
maintenance
HM
1) Specialized inspection -
maintenance
2) Strands check
HM
Specialized
inspection -
maintenance
2.6 Concrete surfaces HM
Underwater inspection –
maintenance
HM
Underwater
inspection –
maintenance
HM
Underwater
inspection –
maintenance
2.7 Steel surfaces
2.8 Main Bridge seismic damping system
2.9 Approach viaducts seismic damping
system
2.10 Non-structural & E/Μ equipment
22
Heavy Maintenance Program for 2013-2022
MAINTENANCE HEAVY MAINTENANCE
Conclusions
31CONCLUSIONS
The management strategy adopted on the offers:
Safety and comfort for the users / availability of the crossing
Preservation of the asset Decisions based on rational monitoring data / Structural health assessment
Optimization of the processes of inspection and maintenance (regular & heavy)
Use trained local resources (supported by external expertise)
Manage special events
Perform necessary improvements
Financial viability during crisis / Toll Policy Products adopted to the needs of the users with special attention to the frequent/local users
ETC products – interoperability
Promote the co-existence with ferries
THANK YOU
FOR YOUR ATTENTION