Serviceability limit state - Eurocodes
Serviceability limit state - Eurocodes
Serviceability limit state - Eurocodes
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Shear lag- effective width<br />
G. Hanswille<br />
Univ.-Prof. Dr.-Ing.<br />
Institute for Steel and<br />
Composite Structures<br />
University of Wuppertal-Germany<br />
real stress distribution<br />
σ max<br />
σ max<br />
b<br />
shear lag<br />
σ(y)<br />
b<br />
b<br />
ei <<br />
i<br />
0,2<br />
⎡ y ⎤<br />
σ ( y) =σ max ⎢1<br />
−<br />
b<br />
⎥<br />
⎣ i ⎦<br />
4<br />
stresses taking into<br />
account the effective<br />
width<br />
b ei<br />
b ei<br />
σ max<br />
5 b ei<br />
y<br />
b i<br />
b e<br />
The flexibility of steel or<br />
0, 2<br />
σ max<br />
bi<br />
concrete flanges affected by<br />
σ(y)<br />
shear in their plane (shear<br />
⎡b<br />
σ<br />
ei<br />
R = 1,25 ⎢<br />
lag) shall be used either by<br />
⎣ bi<br />
rigorous analysis, or by using<br />
an effective width b e<br />
y<br />
σ (y) =σ R + σ<br />
b i<br />
b<br />
ei ≥<br />
⎤<br />
− 0,2⎥<br />
σ<br />
⎦<br />
[ −σ ]<br />
σ R<br />
max<br />
R<br />
max<br />
⎡<br />
⎢1<br />
−<br />
⎣<br />
y<br />
b<br />
i<br />
⎤<br />
⎥<br />
⎦<br />
4<br />
7
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