ProposalProposalfor benchmark for benchmark studystudy...
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21/04/2013 1 Proposal Proposalfor benchmark for benchmark study study Full Full scale scale warehouse warehouse real real fire firetest test FULL FULL SCALE SCALEWAREHOUSE WAREHOUSEIN IN STEEL STEELSTRUCTURE STRUCTURE COST, 18-19 April 2013 Main goal of the test experimental investigation on the shape of flames and consequent radiation heat flux Full scale test was performed with Storage building occupying an area of more than 1600 m² with two compartments of 36 x 24 m Unprotected steel frame Height of the building: 12 m different types of façade cladding Storage ratio: 80% of racks filled with wood racks
Transcript of ProposalProposalfor benchmark for benchmark studystudy...
21/04/2013
1
ProposalProposal for benchmark for benchmark studystudy
Full Full scalescale warehousewarehouse real real firefire testtest
FULL FULL SCALESCALE WAREHOUSEWAREHOUSE IN IN STEELSTEEL STRUCTURESTRUCTURE
COST, 18-19 April 2013
Main goal of the test
� experimental investigation on the shape of flames and
consequent radiation heat flux
Full scale test was performed with
� Storage building occupying an area of more than 1600 m²
with two compartments of 36 x 24 m
� Unprotected steel frame
� Height of the building: 12 m
� different types of façade cladding
� Storage ratio: 80% of racks filled with wood racks
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FULL FULL SCALESCALE WAREHOUSEWAREHOUSE IN IN STEELSTEEL STRUCTURESTRUCTURE
COST, 18-19 April 2013
Fire wall
≈≈≈≈ 12 m
Warehouse divided into two fire compartments and one of
them subject to fire
FULL FULL SCALESCALE WAREHOUSEWAREHOUSE IN IN STEELSTEEL STRUCTURESTRUCTURE
COST, 18-19 April 2013
The compartment subject to fire with all building components
• structure (hot-rolled members) and envelop (roof and façades)
36 m x (24 m + 24 m)
H = 12 m
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FULL FULL SCALESCALE WAREHOUSEWAREHOUSE WITHWITH WOODWOOD PALLETSPALLETS
COST, 18-19 April 2013
Mur CF
IPE600
IPE600
24 m 24 m
IPE600
IPE 220
UPN 160
11,74
24 m 24 m
36 m
3 m
6 m
bardage double-peau
bardage simple-peau non protégé
bardage double-peau
toiture (bac acier + étanchéité)
IPE600
IPE 270
IPE 270
IPE600
Mur CF en plaque de plâtre
Mur CF en béton cellulaire
Mur CF en béton cellulaire
IPE 220
Five 8 m high racks filled with wood pallets (310 tons of wood)
FULL FULL SCALESCALE WAREHOUSEWAREHOUSE
COST, 18-19 April 2013
Ventilation condition:
• Roof: four 3 m x 2 m smoke exhaust vents
• Façade: five 1 m x 2,5 m reduced scale doors
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FULL FULL SCALESCALE WAREHOUSEWAREHOUSE FIRE TESTFIRE TEST
COST, 18-19 April 2013
Data recording
• 183 TC of which 87 for structural memebrs
• 2 displacement transducers on fire wall columns
• 38 heat fluxmeters
• 18 cameras
Detailed experimental results
• Videos
• Excel files
• Test report in French
THERMAL COUPLES
COST, 18-19 April 2013
Bardage double peau
Bar
dage
sim
ple
peau
Bar
dage
dou
ble
pea
u
Mur CF
IPE600
IPE 220
UPN 160 24 m 24 m
36 m
3 m
6 m
IPE600
IPE 270
IPE 270
IPE600
IPE 220
C20-C21 C10-C11
B1
B2
B3 B4
B5 B6
B7
B8 B9
B10 B11
C7-C9
C4-C6
C1-C3
C12-C13
C14-C15
B12
B13
B14
B15
Bx : poutre
Cx : poteau
C16-C17
C18-C19
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CHRONOLOGY OF THE FIREFIRE
COST, 18-19 April 2013
a : Allumage des palettes b : Développement du feu 7 min après l’allumage avec chute de débris
c : Propagation du feu à la rangé D (par rayonnement) au niveau inférieur
d : Effondrement de la rangée de racks E vu par la caméra placée entre les rangées D et E
CAM_3H-2m_1min28’ après allumage
CAM_3H-2m_7min 32’ après allumage
CAM_3H-2m_10min00’ après allumage CAM_4H+4m_≈22min après allumage
CHRONOLOGY OF THE FIREFIRE
COST, 18-19 April 2013
7.5 min 11 min 15 min
18.5 min 21.5 min 21.5 min
25 min 30 min 35 min
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CHRONOLOGY OF THE FIREFIRE
COST, 18-19 April 2013
35 min
40 min
61 min
65 min
GAS TEMPERATURE
COST, 18-19 April 2013
0
200
400
600
800
1000
1200
1400
0 10 20 30 40 50 60
Tem
pé
ratu
re (
°C)
Temps (min)
TC13 TC14
TC15 TC16
TC17 TC18
0
200
400
600
800
1000
1200
1400
0 10 20 30 40 50 60
Tem
pér
atu
re (
°C)
Temps (min)
TC26 TC27 TC28 TC29
TC30 TC31 TC32
central rack: source of the fire
rack close to façade
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TEMPERATURE OF STEEL BEAMS
COST, 18-19 April 2013
0
100
200
300
400
500
600
700
800
900
1000
1100
0 3 6 9 12 15 18 21 24 27
Tem
pé
ratu
re (
°C)
Temps (min)
TC1
TC2
TC3
0
100
200
300
400
500
600
700
800
900
1000
1100
0 3 6 9 12 15 18 21 24 27
Tem
pé
ratu
re (
°C)
Temps (min)
TC13
TC14
TC15
TEMPERATURE OF STEEL COLUMNS
COST, 18-19 April 2013
0
100
200
300
400
500
600
700
800
900
1000
1100
0 3 6 9 12 15 18 21 24 27
Tem
pé
ratu
re (
°C)
Temps (min)
TC 26 : C1 TC 32 : C2
TC 33 : C2 TC 38 : C3TC 43 : C4 TC 46 : C5TC 47 : C5
0
100
200
300
400
500
0 3 6 9 12 15 18 21 24 27
Tem
pé
ratu
re (
°C)
Temps (min)
TC 22 : C1 TC 23 : C1 TC 28 : C2
TC 29 : C2 TC 34 : C3 TC 35 : C3
TC 40 : C4 TC 41 : C4 TC 44 : C5
TC 45 : C5 TC 60 : C9 TC 61 : C9
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STRUCTURAL BEHAVIOUR
COST, 18-19 April 2013
Real fire
-10
-8
-6
-4
-2
0
2
4
6
8
0 30 60 90 120 150 180 210
Dis
plac
emen
t(m
m)
Time (min)
Dép_Poteau 1
Dép_Poteau 2
OBJECTIVE OF BENCHMARK STUDY
COST, 18-19 April 2013
• Fire resistance of unprotected steel structure under real fire
• Tenability condition for occupants before the collapse of
unprotected steel structure
• Failure mode of unprotected steel structure
• inward collpase
• Progressive collapse of steel structures
