WP2 –Experimental activity on new and existing : news ... · Displacement [mm] 0 5 10 15 20 25 30...

WP2 – Experimental activity on new and

existing : news about tests performed during

last months

Final Meeting – 21st and 22nd March 2012

Final

Meeting

Final

Meeting

Final last months

Rome

21st-22nd March

2012

Ema CoelhoEma Coelho

Alfredo Campos CostaAlfredo Campos Costa

Paulo CandeiasPaulo Candeias

Marta MateusMarta Mateus

Luís MendesLuís Mendes

Márcia GonçalvesMárcia Gonçalves

Barros ViegasBarros Viegas

Romeu ReguengoRomeu Reguengo

Filipe SaraivaFilipe Saraiva

Serena Serena GambarelliGambarelli

Daniela Daniela FinizzaFinizza

Meeting

ACTIVITIES CARRIED OUT AT LNEC












Meeting












Meeting

Final

Meeting

SAFECAST Project SAFECAST Project –– Final MeetingFinal Meeting

Two types of tests were performed:

� 2D real scale static tests on beam-column

subassemblies of precast industrial portal

ACTIVITIES CARRIED OUT AT LNEC

Rome

21st-22nd March

2012












Meetingsubassemblies of precast industrial portal

frames under monotonic and cyclic horizontal

loads;

� 3D large scale dynamic tests on precast

cladding panel to column connections.


� 2D real scale static tests on beam-column subassemblies

Final

Horizontal

Seismic

Forces

Rome

21st-22nd March

2012












Meeting

5.93m

6,83m6,83m

Testing setup and instrumentationTesting setup and instrumentation: :

5.93m

• Out-of-plane displacement constraint

Testing setup and instrumentation:


Final

Meeting

Rome

21st-22nd March

2012












Meeting


Reaction wall Reaction wall

Beam-column

connection

Testing setup and instrumentation: • Assessment of internal forces (4º degree hyperstatic str.) .

• Assessment Lateral displacements of the column along the height

& column top rotation

Final

Meeting

East side West sideShaking table

Imposed displacements

Measured

forces

Hinged

connections

Fixed

connection

Forces obtained

through global

equilibrium

Rome

21st-22nd March

2012












Meeting

Measurement of internal forces• 2x2 orthogonal cell forces at each beam ends fixed on the

reaction walls

Final

Meeting


Rome

21st-22nd March

2012












Meeting

Measurement of the column rotation and beams

motions at the top• 26x3 components infrared leds (Krypton equipment)

Final

Meeting


Rome

21st-22nd March

2012












Meeting

Measurement of the Column lateral dispalcements• 6x3 components optical infrared (Krypton equipment)

• 5x2 components optical infrared (Hammatsu equipment)

Final

Meeting


Rome

21st-22nd March

2012












Meeting

Monotonic Test

0

10

20

30

40

50

60

70

0 20 40 60 80 100 120 140 160 180 200

Fo

rce [

kN

]

Final

Meeting


Monotonic test


Reaction wall Reaction wall

SAFECAST SAFECAST

0 20 40 60 80 100 120 140 160 180 200

Displacement [mm]

Rome

21st-22nd March

2012












Meeting

Crack in the

beam Dowel Concrete

Monotonic Test• Damage Observation

Final

Meeting


Monotonic test

Crack in the

cantiliver

beam Dowel

action

Concrete

reaction

Dowel

action

Concrete

reaction

Rome

21st-22nd March

2012












Meeting

Cracking of the

outer side of

the cantilever

Monotonic Test• Damage Observation

Final

Meeting


No apparent damage in

the beams/dowels

Rome

21st-22nd March

2012












Meeting

Monotonic Test• Key results

� Even with a large displacement input (180 mm), collapse of

the subassembly was not reached for monotonic loading;

� At the end of the test it was observed damage in the beam-

column connection (spalling of concrete cover, crushing of

concrete);

� At the end of the test it was observed damage along the Final

Meeting


� At the end of the test it was observed damage along the

column height (cracking of concrete);

� No considerable damage was attained in the beam and in

the dowels;

� Cracking of concrete was visible for a displacement of 5

mm;

� The resisting moment at the bottom of the column was

attained for a displacement of 180 mm.Rome

21st-22nd March

2012












Meeting

Cyclic Test

-250

-200

-150

-100

-50

0

50

100

150

200

250

0 5 10 15 20 25 30 35 40

Dis

plac

emen

t [m

m]

Pseudo time

45 mm90 mm

135 mm180 mm 190 mm

Final

Meeting



Cyclic test

Reaction

wall

Reaction wall

Rome

21st-22nd March

2012












Meeting

Force x Displacement curve

40

60

80Horizontal

Force [kN]

45 mm

90 mm

135 mm

180 mm

Cyclic Test• Analysis of the Results

Final

Meeting


-80

-60

-40

-20

0

20

-200 -150 -100 -50 0 50 100 150 200

Displacement [mm]

180 mm

190 mm

Rome

21st-22nd March

2012












Meeting

Column moment redistribution

Column bending moments

diagrams

6

7

8

45 mm

90 mm

180; 85%

190; 87%

85%

90%

fle

xura

l po

int/

colu

mn

he

igh

t

Evolution of bending moment

diagram inflexion points


Final

Meeting


0

1

2

3

4

5

6

-120 80 280 480

Co

lum

n H

eig

ht

[m]

Moment Diagram (kNm]

135 mm

180 mm

190 mm

45; 73%

90; 74%

135; 81%

180; 85%

70%

75%

80%

85%

40 120 200

He

igh

t o

f co

un

ter-

fle

xura

l po

int/

colu

mn

he

igh

t

Top Displacement [mm]

Rome

21st-22nd March

2012












Meeting

Moment x Rotation curve

40

60

80

100Moment [kNm]

45 mm

90 mm

135 mm

180 mm

190 mm


Final

Meeting


-100

-80

-60

-40

-20

0

20

-3 -2 -1 0 1 2 3

Rotation [deg]

190 mm

Rome

21st-22nd March

2012












Meeting

Dissipated energy balance

25

30

35

Dis

sip

ate

d E

ne

rgy

{k

Nm

]

25

30

35

Dis

sip

ate

d E

ne

rgy

{k

Nm

]

External Work - FxD

Internal Energy - MxRotation


20

25

30

Dissipated

Energy kNm

FxD

MxRotFinal

Meeting


0

5

10

15

20

-200 0 200

Dis

sip

ate

d E

ne

rgy

{k

Nm

]

Displacement [mm]

0

5

10

15

20

-200 0 200

Dis

sip

ate

d E

ne

rgy

{k

Nm

]

Displacement [mm]

0

5

10

15

45 90 135 180 190

Displacement [mm]

Rome

21st-22nd March

2012












Meeting

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