Serviceability limit state - Eurocodes
Serviceability limit state - Eurocodes
Serviceability limit state - Eurocodes
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Simplified solution for the cracking moment<br />
and the normal force in the concrete slab<br />
G. Hanswille<br />
Univ.-Prof. Dr.-Ing.<br />
Institute for Steel and<br />
Composite Structures<br />
University of Wuppertal-Germany<br />
cracking moment M cr<br />
M c+s<br />
σ c<br />
simplified solution for the normal<br />
force in the concrete slab:<br />
h c<br />
z o<br />
z i,st<br />
N c+s<br />
M cr<br />
N<br />
cr<br />
≈<br />
A<br />
c<br />
f<br />
ctm<br />
k<br />
s<br />
⋅k<br />
⋅k<br />
c<br />
primary effects due to shrinkage<br />
k = 0,8<br />
k s = 0,9<br />
coefficient taking into account the effect of<br />
non-uniform self-equilibrating stresses<br />
coefficient taking into account the slip<br />
effects of shear connection<br />
M c+s,ε<br />
N c+s,ε<br />
σ cε<br />
k<br />
c<br />
=<br />
1+<br />
1<br />
hc<br />
2 z<br />
o<br />
+<br />
0,3<br />
≤1,0<br />
cracking moment<br />
shrinkage<br />
33
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