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equivalent steel section for elastic analysis
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ULATION OF EFFECTIVE WIDTH
Effective widths are calculated according to Eurocode 4, clause 5.4.2
Values of b0 are neglected.
Main beams - middle
Middle of the span:
���0.7*10�7m
bei�Le
8�7
8�0.875m
beff�b0�∑bei�2*0.875m�1
Main beams - edge
Middle of the span:
���0.7*10�7m
bei�Le
8�7
8�0.875m
beff�b0�∑bei�0.875�0.09�
Secondary beam (L=5 m)
���L�5m
bei�Le
8�5
8�0.625m
beff�b0�∑bei�2*0.625�1.25
CALAnnex 2 - CALCCULATION OF EFFECTIVE WIDTH
Effective widths are calculated according to Eurocode 4, clause 5.4.2
1.75m
On internal support:
���0.25�10�10��5m
bei�Le
8�5
8�0.625m
beff�b0�∑bei�2*0.625
�0.97m
On internal support:
���0.25�10�10��5m
bei�Le
8�5
8�0.625m
beff�b0�∑bei�0.625�
25m
Secondary beam (L=4 m)
���L�4m
bei�Le
8�4
8�0.5m
beff�b0�∑bei�2*0.5�1
Effective widths are calculated according to Eurocode 4, clause 5.4.2
m
625m�1.25m
m
�0.09m�0.72m
Secondary beam (L=4 m)
1m
Section IPE400 Ea 210
Aa 8446 [mm2] Ec,eff 16.5
Ia 2.31E+08 [mm4] n 12.72727
z= 290 [mm]
B 1750 [mm]
H 60 [mm]
Ac 105000 [mm2]
Ic 31500000 [mm4]
Ai= 16696 [mm2] Ai= 166.96 [cm2]
za= 143.2977959 [mm]
zc= 146.7022041 [mm]
Ii= 584740023.4 [mm4] Ii= 58474 [cm4]
EQUIVALENT CROSS SECTION PROPERTIES (MIDDLE BEAM)
According to EC4-1-1 (clause 5.4.2.2 (11)),
the effects of creep in composite beams are
taken into account by
using a nominal modular ratio n, obtained
with an effective modulus of elasticity
Concrete
Steel
with an effective modulus of elasticity
for concrete Ec,eff = Ecm/2. (Building is not
mainly intended for storage)
Section IPE400 Ea 210
Aa 8446 [mm2] Ec,eff 16.5
Ia 2.31E+08 [mm4] n 12.72727
z= 290 [mm]
B 970 [mm]
H 60 [mm]
Ac 58200 [mm2]
Ic 17460000 [mm4]
Ai= 13018.85714 [mm2] Ai= 130.1886 [cm2]
za= 101.862134 [mm]
zc= 188.137866 [mm]
Ii= 482146856.6 [mm4] Ii= 48214.69 [cm4]
EUQIVALENT CROSS SECTION PROPERTIES (EDGE BEAM)
According to EC4-1-1 (clause 5.4.2.2 (11)),
the effects of creep in composite beams are
taken into account by
using a nominal modular ratio n, obtained
with an effective modulus of elasticity
Concrete
Steel
with an effective modulus of elasticity
for concrete Ec,eff = Ecm/2. (Building is not
mainly intended for storage)
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