Component Method for High Strength Steel Rectangular Hollow … · 2019-11-25 · STRUCTURAL...
Transcript of Component Method for High Strength Steel Rectangular Hollow … · 2019-11-25 · STRUCTURAL...
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Component Method for High Strength Steel Rectangular Hollow Section T Joints
Marsel Garifullin, D.Sc. (Tech.)
Faculty of Built Environment, Tampere University
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SCOPE OF RESEARCH 2 / 18
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SCOPE OF RESEARCH
brace
chord
weld around
3 / 18
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STRUCTURAL ANALYSIS
N0
N0
N Mip Mop
4 / 18
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STRUCTURAL ANALYSIS
Load
Deformation
5 / 18
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STRUCTURAL ANALYSIS
Load
Deformation
Resistance
5 / 18
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STRUCTURAL ANALYSIS
Load
Deformation
Stiffness
5 / 18
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STRUCTURAL ANALYSIS
• Eurocode EN 1993-1-8:2005
• AISC Steel Design Guide 24
• AS/NZS 4673
• CIDECT Design Guide No. 3
= + + −−
2
,1, 0 0 1 5
1 2/
2 11ip Rd n y M
ηM k f t h γ
η ββ
6 / 18
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Chord face failure Chord side wall failure Chord shear failure
Punching shear Brace failure Local buckling
FAILURE MODE APPROACH 7 / 18
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Chord face failure Chord side wall failure Chord shear failure
Punching shear Brace failure Local buckling
FAILURE MODE APPROACH 7 / 18
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Chord face failure Chord side wall failure Chord shear failure
M 1 = 26.3 kNm M2 = 19.6 kNm M3 = 45.8 kNm
FAILURE MODE APPROACH 7 / 18
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Chord face failure Chord side wall failure Chord shear failure
M 1 = 26.3 kNm M2 = 19.6 kNm
Joint resistance
M3 = 45.8 kNm
FAILURE MODE APPROACH 7 / 18
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FAILURE MODE APPROACH
bird-beak joint end-plate joint cleat joint column base
8 / 18
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COMPONENT METHOD
zero
distance
zop
zip
9 / 18
,
4
4
Rd Rd
j ini eq
N F
C Ek
=
=
FRd, keq
a) chord face in bending
b) chord side walls in tension / compression
c) chord side walls in shear,
d) chord face under punching shear
e) brace flange / webs in tension / compression
f) chord section in distortion
g) welds
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COMPONENT METHOD
chord axis
Mop,Rd, Sj,ini,op
rigid beam
Mip,Rd, Sj,ini,ip
NRd, Cj,ini,N
brace axis
10 / 18
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INFLUENCE OF FILLET WELDS 11 / 18
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INFLUENCE OF FILLET WELDS 11 / 18
0
10
20
30
40
50
0,0 0,1 0,2 0,3
M[k
Nm
]
φ [rad]
a10
a6
1/2v
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INFLUENCE OF FILLET WELDS 11 / 18
0
10
20
30
40
50
0,0 0,1 0,2 0,3
M[k
Nm
]
φ [rad]
a10
a6
1/2v
Eurocode
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INFLUENCE OF FILLET WELDS 12 / 18
.
.
→ = +
→ = +
eq w
eq w
b b b a
h h h a
1 1
1 1
1 13
1 13
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Ultra high strength steels
(UHHS)
High strength
steels (HSS)Regular steels
HIGH STRENGTH STEEL 13 / 18
Design rules
S355 S460 S550 S700 S900 S1100
S355 S460 S550 S700 S900 S1100
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Ultra high strength steels
(UHHS)
High strength
steels (HSS)Regular steels
HIGH STRENGTH STEEL 13 / 18
Design rulesReduction
factor 0.9
S355 S460 S550 S700 S900 S1100
S355 S460 S550 S700 S900 S1100
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Ultra high strength steels
(UHHS)
High strength
steels (HSS)Regular steels
HIGH STRENGTH STEEL 13 / 18
Design rulesReduction
factor 0.9
Reduction
factor 0.8
S355 S460 S550 S700 S900 S1100
S355 S460 S550 S700 S900 S1100
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Ultra high strength steels
(UHHS)
High strength
steels (HSS)Regular steels
HIGH STRENGTH STEEL 13 / 18
Design rulesReduction
factor 0.9No design rules
Reduction
factor 0.8
S355 S460 S550 S700 S900 S1100
S355 S460 S550 S700 S900 S1100
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HIGH STRENGTH STEEL 14 / 18
Jointb0
[mm]
h0
[mm]
t0
[mm]
b1
[mm]
h1
[mm]
t1
[mm]β
Chord
Steel
Brace
Steel
aw
[mm]aw /aw,fs
S420_S420_a6
150 150 8
100 100 8 0.67 S420 S420
6
0.51
S500_S420_a6 100 100 8 0.67 S500 S420 0.51
S500_S500_a6 100 100 8 0.67 S500 S500 0.47
S700_S420_a6 100 100 8 0.67 S700 S420 0.51
S700_S500_a6 100 100 8 0.67 S700 S500 0.47
S700_S500_a6_WiPF 100 100 8 0.67 S700 S500 0.47
S700_S700_a6 120 120 8 0.80 S700 S700 0.45
S420_S420_a10
150 150 8
100 100 8 0.67 S420 S420
10
0.84
S500_S420_a10 100 100 8 0.67 S500 S420 0.84
S500_S500_a10 100 100 8 0.67 S500 S500 0.78
S700_S420_a10 100 100 8 0.67 S700 S420 0.84
S700_S500_a10 100 100 8 0.67 S700 S500 0.78
S700_S500_a10_WiPF 100 100 8 0.67 S700 S500 0.78
S700_S700_a10 120 120 8 0.80 S700 S700 0.76
S420_S420_1/2v
150 150 8
100 100 8 0.67 S420 S420
butt -
S500_S420_1/2v 100 100 8 0.67 S500 S420
S500_S500_1/2v 100 100 8 0.67 S500 S500
S700_S420_1/2v 100 100 8 0.67 S700 S420
S700_S500_1/2v 100 100 8 0.67 S700 S500
S700_S700_1/2v 120 120 8 0.80 S700 S700
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HIGH STRENGTH STEEL 14 / 18
Jointb0
[mm]
h0
[mm]
t0
[mm]
b1
[mm]
h1
[mm]
t1
[mm]β
Chord
Steel
Brace
Steel
aw
[mm]aw /aw,fs
S420_S420_a6
150 150 8
100 100 8 0.67 S420 S420
6
0.51
S500_S420_a6 100 100 8 0.67 S500 S420 0.51
S500_S500_a6 100 100 8 0.67 S500 S500 0.47
S700_S420_a6 100 100 8 0.67 S700 S420 0.51
S700_S500_a6 100 100 8 0.67 S700 S500 0.47
S700_S500_a6_WiPF 100 100 8 0.67 S700 S500 0.47
S700_S700_a6 120 120 8 0.80 S700 S700 0.45
S420_S420_a10
150 150 8
100 100 8 0.67 S420 S420
10
0.84
S500_S420_a10 100 100 8 0.67 S500 S420 0.84
S500_S500_a10 100 100 8 0.67 S500 S500 0.78
S700_S420_a10 100 100 8 0.67 S700 S420 0.84
S700_S500_a10 100 100 8 0.67 S700 S500 0.78
S700_S500_a10_WiPF 100 100 8 0.67 S700 S500 0.78
S700_S700_a10 120 120 8 0.80 S700 S700 0.76
S420_S420_1/2v
150 150 8
100 100 8 0.67 S420 S420
butt -
S500_S420_1/2v 100 100 8 0.67 S500 S420
S500_S500_1/2v 100 100 8 0.67 S500 S500
S700_S420_1/2v 100 100 8 0.67 S700 S420
S700_S500_1/2v 100 100 8 0.67 S700 S500
S700_S700_1/2v 120 120 8 0.80 S700 S700
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HIGH STRENGTH STEEL 15 / 18
4
6
8
10
12
14
0,3 0,4 0,5 0,6 0,7 0,8 0,9
Mn
orm
β
Eurocode
S420 S500 S700
Eurocode 0.9 0.8 0.8
Proposal, butt welds 0.9 0.8 0.8
Proposal, fillet welds 1.0 1.0 0.9
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SURROGATE MODELLING 16 / 18
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SURROGATE MODELLING 16 / 18
-1,5
-1,0
-0,5
0,0
0,5
1,0
1,5
2,0
-0,5 1,5 3,5 5,5 7,5 9,5
y=
f(x
)
x
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SURROGATE MODELLING 16 / 18
-1,5
-1,0
-0,5
0,0
0,5
1,0
1,5
2,0
-0,5 1,5 3,5 5,5 7,5 9,5
y=
f(x
)
x
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SURROGATE MODELLING 16 / 18
-1,5
-1,0
-0,5
0,0
0,5
1,0
1,5
2,0
-0,5 1,5 3,5 5,5 7,5 9,5
y=
f(x
)
x
Variables
b0 2γ = b0/t0 β = b1/b0 φ
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SURROGATE MODELLING 17 / 18
3
5
7
9
11
13
100 140 180 220 260 300
t 0[m
m]
b0 [mm]
Sampling
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SURROGATE MODELLING 17 / 18
3
5
7
9
11
13
100 140 180 220 260 300
t 0[m
m]
b0 [mm]
Sampling FE simulations
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SURROGATE MODELLING 17 / 18
3
5
7
9
11
13
100 140 180 220 260 300
t 0[m
m]
b0 [mm]
S[k
Nm
/rad
]
Sampling FE simulations Surrogate model
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FUTURE RESEARCH 18 / 18
Mop
out-of-plane bending
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FUTURE RESEARCH 18 / 18
Mop
out-of-plane bending K joint KT joint