Presentation title Workpackage No. Author€¦ · GFRP panel with transverse web T1 Monotonic loading 15,04 15,02 17 (E.22) -13,1% T2 Cyclic loading 15,00 GFRP panel with longitudinal

Copyright © 2015-2018. All rights reserved.This publication is produced by SUREBRIDGE work group. Any duplication or use of objects such as diagrams in other electronic or printedpublications is not permitted without the author's agreement.

This project has received funding from the European Union’s Seventh Framework Programme for research, technological development anddemonstration under grant agreement No. 31109806.0009SUREBRIDGE is co-funded by Funding Partners of The ERA-NET Plus Infravation and the European Commission. The Funding Partners of theInfravation 2014 Call are:MINISTERIE VAN INFRASTRUCTUUR EN MILIEU, RIJKSWATERSTAATBUNDESMINISTERIUM FÜR VERKEHR, BAU UND STADTENTWICKLUNG,DANISH ROAD DIRECTORATE,STATENS VEGVESEN VEGDIREKTORATET,TRAFIKVERKET – TRV,VEGAGERÐIN,MINISTERE DE L'ECOLOGIE, DU DEVELOPPEMENT DURABLE ET DE L'ENERGIE,CENTRO PARA EL DESARROLLO TECNOLOGICO INDUSTRIAL,ANAS S.p.A.,NETIVEI, ISRAEL - NATIONAL TRANSPORT INFRASTRUCTURE COMPANY LTD,FEDERAL HIGHWAY ADMINISTRATION USDOT

Presentation title

Workpackage No. AuthorDate

SUREbridgeSustainable refurbishment of existing (concrete) bridges

• Restoring the load carrying capacity of aged and deteriorated bridges

• By combining two technologies: • InfraCore FRP decks on top

for deck restoration and additional compressive capacity

• Prestressed carbon external reinforcement on underside for additional tensile capacity

Finishings to the SUREbridge-system

State of the art

Prototype analysis

Client demands

Connection deck-to-concrete

Fabrication

Partial tests

Deck-design and connections between deck-segments

Full-scale tests

Fabrication

Develop design tool

Operating procedure

2015 2016 2017 2018

WP2

WP3

WP4

progress

Phasing and progress

Pilot projectNext step:

Refurbishment completed

1. Remove asphalt 2. Refurbish concrete and reinforcement

3. Apply carbon strips and prestress

4. Install bolts for vertical positioning of decks

5. Install InfraCore deck panels on the bolts

6. Apply grouting betweenexisting and new deck

SUREbridge installation sequence

Overview of the lab test in CTH Bending test of prototype beams

and GFRP panelsAugust 2018Jincheng Yang

CTHSUREBridge Consortium Meeting

2017-08-29

9

Content

• Four-point bending of prototype beamsReference T-beam

T-beam + prestressed CFRP + Trans. GFRP panel (Mortar bonding)

T-beam + prestressed CFRP + Longt. GFRP panel (Mortar bonding)

T-beam + prestressed CFRP + Longt. GFRP panel (Epoxy bonding)

• Test setup and measurements

• Load-deflection curve

• Videos

• Three-point bending of GFRP panel• GFRP L1 & L2 with webs in longitudinal direction

• GFRP T1 & T2 with webs in transverse direction

• Load-deflection curves

• E-modulus from lab test and comparison

• Failure modes

10

Content

• Four-point bending of prototype beamsReference T-beam




• Test setup and measurements

• Load-deflection curve

• Videos

• Three-point bending of GFRP panel• GFRP L1 & L2 with webs in longitudinal direction

• GFRP T1 & T2 with webs in transverse direction

• Load-deflection curves

• E-modulus from lab test and comparison

• Failure modes

Reference T-beam

12

Reference T-beam

13

Reference T-beam

Unit

kN

Lab result Hand

calculation

Software--

AICE

Cracking

load

19 24,7 NA

Yielding

load

133 122,3 121,2

Ultimate

load

155 129,1 128,6

133,251

154,803

-20

0

20

40

60

80

100

120

140

160

180

0 20 40 60 80 100 120 140

Tota

l lo

ad

for

two load

cel

ls (

kN

)

Deflection at midspan (mm)

Total load--Deflection curve

Beam Ref.

18,704

0

10

20

-2 0 2 4

Beam Ref. at cracking

Analysis going on:

Crack width and patten at 30 kN, 60 kN, 90 kN and

120 kN



18


Unit

kN

Lab result Hand

calculation

Software--

AICE

Cracking

load

~76

Yielding

load

~325

CFRP

rupture

~404

75,525

325,552

403,892

-100

0

100

200

300

400

500

-50 0 50 100 150 200 250

Tota

l lo

ad

for

two load

cel

ls (

kN

)


Total load--Deflection curve Note: Manually unload and reload

again. Adjust the constrain chain to

allow large deformation

Analysis going on:

• Compare the hand calculation and Software output

with lab result

• Crack width and pattern

Cracking

Yielding

CFRP rupture

Check the link to watch the video of testing

https://drive.google.com/open?id=0B2Qwly0bhIAGc3

IyVnZBTWVyWDQ

https://drive.google.com/open?id=0B2Qwly0bhIAGc3IyVnZBTWVyWDQ

19


Bottom skin of GFRP panel

Mortar layer 30 mm

Flange of T-beam

DIC monitoring:

Using high solution camera to monitor the painted

area by taking pictures every 30 seconds. Digital

correlation software will be used to analyze the

photos and evaluate the field displacement during

the loadign process.

20


Bottom skin of GFRP panel

Mortar layer 30 mm

Flange of T-beam

Linear profile of

displacement in x-

direction along the black

line in the field.

DIC monitoring showed

full-composite action

between GFRP panel and

concrete beam


23


Unit

kN

Lab result Hand

calculation

Software--

AICE

Cracking

load

~65

Yielding

load

~307

CFRP

rupture

~397

65,478

306,934

397,189

-50

0

50

100

150

200

250

300

350

400

450

-20 0 20 40 60 80 100 120 140 160 180

Tota

l lo

ad

for

two load

cel

ls (

kN

)


Total load--Deflection curve

Analysis going on:

• Compare the hand calculation and Software output

with lab result

• Crack width and pattern

Cracking

Yielding

CFRP rupture

Check the link to watch the video of testing

https://drive.google.com/open?id=0B2Qwly0bhIAGQz

NqQ0luMkdHNnc

https://drive.google.com/open?id=0B2Qwly0bhIAGQzNqQ0luMkdHNnc

24

Load-deflection curves of 4 prototype beams

-100

0

100

200

300

400

500

-50 0 50 100 150 200 250

Tota

l lo

ad

from

tw

olo

ad

cell

s k

N

Midspan deflection mm

Load—deflection curves

GFRP

Longt._Mortar bond

GFRP

Longt._Epoxy bond

GFRP

Trans._Mortar bond

Reference beam

-20

0

20

40

60

80

100

-2 0 2 4 6 8 10

Load—deflection curves

Three-point bending of GFRP panels

26


-120

-100

-80

-60

-40

-20

0

0 10 20 30 40 50 60 70

To

tal fo

rce

(kN

)

Midspan deflection (mm)

GFRP panel with transverse webs

T2 T1-500

-450

-400

-350

-300

-250

-200

-150

-100

-50

0

0 20 40 60 80 100

To

tal fo

rce

(kN

)


GFRP panel with longitudinal webs

L2 L1

Note

1. T1—monotonic loading from 0 till failure at 111.6 kN

2. T2—cyclic loading

• 10 cycles: 0 kN 77 kN0 kN

• Final loading from 0 till failure at 111.6kN (coinsidence,

pefect match)

3. Failure mode—shear failure in the web/skin connection, crack

opening in the core material

4. Good match between T1 curve and the final loading step of T2

Note

1. L1—monotonic loading from 0 till failure at 369.2 kN

2. T2—cyclic loading

• 10 cycles: 0 kN 262 kN0 kN

• Final loading from 0 till failure at 435 kN

3. Failure mode

• L1—top skin buckling and delamination

• L2—failure in bottom skin due to delaminate

4. Good match between L1 curve and the final loading step of L2

27


-120

-100

-80

-60

-40

-20

0

0 10 20 30 40 50 60 70

To

tal fo

rce

(kN

)



T2 T1-500

-450

-400

-350

-300

-250

-200

-150

-100

-50

0

0 20 40 60 80 100

To

tal fo

rce

(kN

)



L2 L1

Specimen No Loading *Lab test E-

modulus

GPa

Lab test E-modulus in

Avergage

GPa

E-modulus in Datasheet

from FCE

GPa

(E.lab-E.fce)/E.lab

GFRP panel with transverse web T1 Monotonic loading 15,04 15,02 17 (E.22) -13,1%

T2 Cyclic loading 15,00

GFRP panel with longitudinal web L1 Monotonic loading 26,89 27,00 32 (E.11) -18,5%

L2 Cyclic loading 27,12

*Lab test E-modulus—the E-modulus in the span direction calculated from the test result of load and midspan deflection curve

28


-150

-100

-50

0

0 10 20 30 40 50 60 70

To

tal fo

rce

(kN

)



T2 T1

T1

T2

T1Failure model of T1 and T2

29


-500

-400

-300

-200

-100

0

0 20 40 60 80 100

To

tal fo

rce

(kN

)



L2 L1

L1

L1

Failure model of L1 and L2

L1

L2-East side

L2-west side

L2-west side

30

GFRP panels--Video and photos

Please use the link below to watch the video and photos of the panel tests:

https://drive.google.com/drive/folders/0B2Qwly0bhIAGb05pUnJMTGszb0E?usp=sharing

https://drive.google.com/drive/folders/0B2Qwly0bhIAGb05pUnJMTGszb0E?usp=sharing

Thank you for your attention!

Documents

Presentation title Workpackage No. Author€¦ · GFRP panel with transverse web T1 Monotonic loading 15,04 15,02 17 (E.22) -13,1% T2 Cyclic loading 15,00 GFRP panel with longitudinal