sdr engineering consultants, inc.aapa.files.cms-plus.com/2019seminars/facilitieseng/seliem...
TRANSCRIPT
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SDR Engineering Consultants, Inc.
ENHANCING LIVE LOAD-CARRYING CAPACITY OF EXISTING INFRASTRUCTURE FOR EXTENDED LIFE SPAN
Facilities Engineering SeminarApril 24-26, 2019Jacksonville, FL
April 24, 2019
Mohsen Shahawy, PhD, PE (Principal)
Hatem Seliem, PhD, PE, PMP (Senior Structural Engineer)
Panel I: Tech Forum: Using Tech to Extend Infrastructure
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OUTLINE
Fiber-Reinforced Polymers
Material Properties
Common Types / Application Techniques
Advantages of FRP
Advanced Computing Techniques
Advanced Structural Analysis
Soil-Structure Interaction
Damage Assessment
Testing and Instrumentation
Selected Projects
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OUTLINE
Fiber-Reinforced Polymers
Material Properties
Common Types / Application Techniques
Advantages of FRP
Advanced Computing Techniques
Advanced Structural Analysis
Soil-Structure Interaction
Damage Assessment
Testing and Instrumentation
Selected Projects
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FIBER-REINFORCED POLYMERS (FRP)
Fibers: Glass
Carbon
Aramid
Glass Fiber Reinforced Polymers (GFRP)
Carbon Fiber Reinforced Polymers (CFRP)
Aramid Fiber Reinforced Polymers (AFRP)
Constituent Materials
Resins: Epoxy
Polyester
Vinyl esters
+
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FIBER-REINFORCED POLYMERS (FRP)
Constituents vs. Composite
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FIBER-REINFORCED POLYMERS (FRP)
Mechanical Properties
0
100
200
300
0% 1% 2% 3% 4% 5%
Strain
Str
ess (
ksi)
GFRP(180 ksi)
AFRP(240 ksi)
HM CFRP (220 ksi)
CFRP (310 ksi)
Steel (60 ksi)
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High strength-to-weight ratio
Excellent durability
Non-magnetic, Non corrosive
Low profile when installed
Fast and easy application
FIBER-REINFORCED POLYMERS (FRP)
Advantages of FRP
ACI 440.2R
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Pre-cured LaminatesWet lay-up systems
FIBER-REINFORCED POLYMERS (FRP)
Common Types of CFRP
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FIBER-REINFORCED POLYMERS (FRP)
Pre-cured
Pre-cured Composite shapes manufactured
off-site
Wet lay-up
Dry fiber sheets or fabrics impregnated
with resin on-site
Pre-preg
Pre-impregnated uncured fiber
sheets or fabrics
Common Types of FRP
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FIBER-REINFORCED POLYMERS (FRP)
Application Techniques
Externally Bonding (EB)
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FIBER-REINFORCED POLYMERS (FRP)
Application Techniques
Near-Surface-Mounted (NSM)
NSM Bars NSM Strips
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FIBER-REINFORCED POLYMERS (FRP)
Application Techniques
Wrapping
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FIBER-REINFORCED POLYMERS (FRP)
Reasons to Retrofit with FRP
Increase load-carrying capacity
Flexure strengthening, shear strengthening, axial load strengthening
Impact damaged structures
Ductility enhancement
Blast mitigation
Structural upgrade and seismic retrofit
Cutouts and penetrations
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FIBER-REINFORCED POLYMERS (FRP)
Durability
Environmental considerations
Alkalinity/acidity
Thermal expansion
Electrical conductivity
Loading considerations
Impact tolerance
Creep rupture and fatigue
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FIBER-REINFORCED POLYMERS (FRP)
Durability
Environmental reduction factor (conservative estimates)
Fiber type & exposure conditions
Protective coatings
Projects that are more than 30 years old
ACI 440.2R
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OUTLINE
Fiber-Reinforced Polymers
Material Properties
Common Types / Application Techniques
Advantages of FRP
Advanced Computing Techniques
Advanced Structural Analysis
Soil-Structure Interaction
Damage Assessment
Testing and Instrumentation
Selected Projects
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ADVANCED COMPUTING TECHNIQUES
Advanced Structural Analysis
Finite Element Analysis (FEA)
Non-linear analysis
Geometrical non-linearities
Shell elements, solid elements
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ADVANCED COMPUTING TECHNIQUES
Soil-Structure Interaction
Piles: beam elements
Soil springs (P-y curves)
Lateral springs
Vertical springs
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ADVANCED COMPUTING TECHNIQUES
Soil-Structure Interaction
Gravity Loads Lateral Loads
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ADVANCED COMPUTING TECHNIQUES
Damage Assessment
SMART BRIDGE SUITE
Section loss
Corrosion of steel
Loss of bond
Deterioration
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OUTLINE
Fiber-Reinforced Polymers
Material Properties
Common Types / Application Techniques
Advantages of FRP
Advanced Computing Techniques
Advanced Structural Analysis
Soil-Structure Interaction
Damage Assessment Tools
Testing and Instrumentation
Selected Projects
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TESTING AND MONITORING
Load Testing
Actual behavior of structure (load distribution)
Strength enhancing factors not included in calculations
Composite actions
Continuity/fixation
Secondary members
Static tests (proof test and diagnostic test)
Dynamic tests
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TESTING AND MONITORING
Load Testing
Counter weights Trucks with known weights
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TESTING AND MONITORING
Load Testing
390 KIPS TRUCKS
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TESTING AND MONITORING
Non-Destructive Testing
Chloride Ion Penetration Cover removal and reinforcement inspection
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TESTING AND MONITORING
Instrumentation
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Instrumentation
TESTING AND MONITORING
Instrumentation plans are developed based on analysis of structure.
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OUTLINE
Fiber-Reinforced Polymers
Material Properties
Common Types / Application Techniques
Advantages of FRP
Advanced Computing Techniques
Advanced Structural Analysis
Soil-Structure Interaction
Damage Assessment Tools
Testing and Instrumentation
Selected Projects
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SELECTED PROJECTS
Allen Creek BridgeClearwater, FL 2005
Wrapping of piles
Underwater application
Splash zone
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SELECTED PROJECTS
US 1 BridgeMelbourne, FL 1994
Corrosion of main reinforcement
Girders repair
Concrete section restoration
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SELECTED PROJECTS
Rockaway Line ViaductNew York, NY 2009
Corrosion of reinforcement
Girders repair
Concrete section restoration
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I-10 Bridge Over L&A RailroadLA 2016
Strengthening of deck slab
Instrumentation & proof testing
SELECTED PROJECTS
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SELECTED PROJECTS
Bayou Pierre BridgeDesoto & Red River Parishes, LA 2018
46-AXLES SPMT
5-Span with total length of 500 ft.
10 PPC girders
10,000 kips (4,500 tons) DRAGLINE390 KIPS TRUCKS
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SELECTED PROJECTS
Bayou Pierre BridgeDesoto & Red River Parishes, LA 2018
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SELECTED PROJECTS
Bayou Pierre BridgeDesoto & Red River Parishes, LA 2018
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ThankYou !