S22_CFRP Strengthening and Load Testing of the Concrete Deck of I-10 KCS Railroad Overpass_LTC2013

7/29/2019 S22_CFRP Strengthening and Load Testing of the Concrete Deck of I-10 KCS Railroad Overpass_LTC2013

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CFRP Strengthening and LoadTesting of the Concrete Deck of

I-10 KCS Railroad OverpassMohsen Shahawy, Ph.D, PE

SDR Engineering Consultants, Inc.

SDR Engineering Consultants, Inc.

2260 Wednesday Street, Suite 500

Tallahassee, Florida 32308

Tel: 850-222-2737

[email protected]


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Fibers: GFRPCFRP

AFRP

Resins: Epoxy

Polyester

+

Fiber ReinforcedPolymers:Bars, Tendons, Grids,

Laminates

FRP MATERIALS


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FRP MATERIALS

Fiber PolymerMatrix

FRP Fiber Reinforced Polymer


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0

100

200

300

0% 1% 2% 3% 4% 5%

Strain

Stress

(ksi)

FRP MATERIALS

High strength-to-weight ratio

Excellentdurability

Non-magnetic

Low-transversalresistance(temporary works)

GFRP

(180 ksi)

AFRP

(240 ksi)

HM CFRP

(pitch)

(220 ksi)

CFRP

(pan)

(310 ksi)

Steel (60 ksi)


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General use of FRP in Transportation

Aircrafts Race Cars Trucks Cars

Concept CarsBusesSport CarsHelicopters

A380

Fiber Metal LaminateMcLaren Formula 1

CFRP Thermoset

Car Body Structure

SMC Thermoset Parts for

Driver Cabin

GMT-Thermoplastic

Rotor Blade

Erosion ProtectionCFRP Thermoset Car

Body Structure

SMC Thermoset

PanelsInjection Moulded

Thermoplastic Car Body

Automotive/Railway and Aerospace


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Airbus 380 CFRP

AFRP

CFRP

CFRP

GFRP

AEROSPACE INDUSTRY


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Aero-Engineering & Avionics

Aircraft BridgesTime

1900+

1950+

2000

Avionics & Aero-Engineering

Space Shuttle Discovery - 2005

The Avro Canada CF-105 Arrow - 1957

Bridge Structural Engineering

Civionics + Bridge Structural Engineering

Fleetster - eight-passenger V-1A - 1932


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Corrosion induced concrete deck deterioration

RC STRUCTURES


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Bridge Durability


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Accidental Damage


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RC STRUCTURES

Lightweight FRP facilitates installation


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Sierrita de la Cruz Creek (TxDOT) Pierce Street Bridge, OH

Wotton, Qubec, CanadaTaylor Bridge, Manitoba, Canada

RC STRUCTURES: Bridge Decks


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53rd Ave. Bridge, IA Mills Rd. Bridge, OH

Franklin Co. Bridge, VA Trout River Bridge, Alcan Hwy.


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Joffre Bridge, Sherbrooke, Qubec, Canada

Reinforcement of the

deck slab before casting

CFRP grid Integrated withfiber optic sensors



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Composite

rebars were

used inconjunction

with stay-in-

place form

panels to

create thedeck of the

bridge.

Salem Avenue Bridge


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Stay-in-place forms


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concrete

FRP shell

Stay-in-place permanent formwork

Longitudinal and hoop reinforcement for confinement

Non corrosive and protects concrete core

FRP Tube:

I I I I I

(Virginia)

Proposed in

San Diego

Stay-in-place forms


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CONCRETE FILLED FRP TUBESPILE APPLICATIONS


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CONCRETE FILLED FRP TUBES

Research and Development


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To verify theoretical calculations load tests were undertaken

FRP BRIDGES

Lightweight structures

capable of supporting

extreme loads


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FRP ROOF STRUCTURE

Aerial Train Station, GA

FRP components selected to avoid

electromagnetic interference


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CFRP sheets (fiber properties)

CFRP laminates (70% f.v.f)

E = 92000 ksi

fult = 355 ksi

e

ult = 0.40 %

E = 65000 ksi

fult = 220 ksi

eult = 0.34 %

STRENGTHENING STEEL BEAMS


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Strengthening

system developed

and design

guidelines

established

STRENGTHENING STEEL BEAMS


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REPAIR AND STRENGTHENING

Repair

Strengthening

Seismic Retrofit


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Externally Bonded FRP Strips / Sheets

Precured LaminatesWet lay-up systems

FLEXURAL STRENGTHENING


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FLEXURAL STRENGTHENING

Strengthening ofslabs with precured

laminates


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SHEAR STRENGTHENING

Inclined orientation:

efficient use of fibers


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COLUMN REPAIR


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COLUMN REPAIR

FRP sheets

Column wrapping with sheets for

confinement


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401 & Leslie

Pre-repair 1996 2003

Column

FRP

GroutActiveConfinement

COLUMN REPAIR


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Crane position on bridge

Deck Strengthening of Interstate I-10 Bridge OverKCS Railroad Overpass Using FRP


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Mi-Jack gantry Crane configuration



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Mi-Jack gantry Crane configuration


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Cross section of the bridge



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The maximum carried by the heaviest

wheel of the crane is 96 kips

Deck thickness: 7 inch

Beam spacing: 7-5 AASHTO Type III Girder

Concrete strength: 4 ksi


Crane Wheel Load:

Maximum wheel load: 96 kips

Wheel location from left beam (CL): 23.19 inchTire contact area: 30 inch width, 36 inch long

Load factor: 1.25


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Deck Capacity

Strut-and-Tie model

FEM analysis showed a maximum wheel load of 43.2 kips


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Cross Section of the Deck with CFRP Applied

Plan View of the Deck Bottom with CFRP Applied


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The Future is Now

Thank

You

Documents

S22_CFRP Strengthening and Load Testing of the Concrete Deck of I-10 KCS Railroad Overpass_LTC2013