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Application des règles Eurocodes
Caractéristiques générales du pont bipoutre
dans la section transversale P2
L 1 = L 3 =50 m, L 2 = 60 m
a = 1.5 m
h = 2400 mm
t w = 19 mm
b tf = 800 mm
b bf = 1000 mm
t f = 95 mm
h w = h − 2t f = 2.21 m
e = 32.5 cm
φ ur = 20 mm
φ lr = 16 mm
s ur = 130 mm
s lr = 130 mm
c ur = 60 mm
c lr = 60 mm
b eff = 6 m
beff
nur
= = 46.154
s
n
lr
ur
beff
= = 46.154
s
lr
Aires principales des différentes parties de la
section mixte
A
A
A
= t b = 0.076 m²
atf tf tf
= t h = 0.042 m²
aw w w
= t b = 0.095 m²
abf bf bf
Aa = Aatf + Aaw + Aabf
= 0.213 m²
A
A
A
A
A
sur
2
π dur
= = 3.142 cm²
4
= n A = 144.997 cm²
tsur ur sur
slr
2
π dlr
= = 2.011 cm²
4
= n A = 92.816 cm²
tslr lr slr
= c b = 0.36 m²
cur ur eff
( )
A = e − c − c b = 1.23 m²
A
clur ur lr eff
= c b = 0.36 m²
clr lr eff
Ac = ebeff = Acur + Aclur + Aclr
= 1.95 cm²
(voir les Notations et la Figure 3-6)
3.1.5.2 Sous-panneau 1 - Propriétés des matériaux
Acier
f yw = 345 N/mm² car 16 mm < t f = 19 mm ≤ 40 mm (cf. Tableau 2-4)
235 N / mm²
ε
w
= = 0.825
f
yw
f yf = 315 N/mm² car 80 mm < t f = 95 mm ≤ 100 mm (cf. Tableau 2-4)
235 N / mm²
ε
f
= = 0.825
f
f
f
ydw
ydf
M 0
yf
f
yw
= = 345 N/mm²
γ
f
yf
= = 315 N/mm²
γ
M 0
E a = 210000 N/mm²
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