EUROCODE 2 WORKED EXAMPLES - Federbeton
EUROCODE 2 WORKED EXAMPLES - Federbeton
EUROCODE 2 WORKED EXAMPLES - Federbeton
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EC2 – worked examples 6-16<br />
⎛ fck<br />
⎞<br />
⎜1- ⎟<br />
250 25<br />
σ 2Rd,max = k<br />
⎝ ⎠ ⎛ ⎞<br />
2 f cd = ⎜1-⎟14.17 = 12.75 N / mm<br />
0.85 ⎝ 250 ⎠<br />
nodes tensioned – compressed by anchor logs in different directions<br />
⎛ fck<br />
⎞<br />
⎜1- ⎟<br />
250<br />
25<br />
σ 3Rd,max = k<br />
⎝ ⎠ ⎛ ⎞<br />
3 f cd = 0.88 ⎜1-⎟14.17 = 11.22 N / mm<br />
0.85 ⎝ 250 ⎠<br />
Actions<br />
Distributed load: 150 kN/m upper surface and 150 kN/m lower surface<br />
Columns reaction<br />
R = (150+150)⋅5.40/2 = 810 kN<br />
Evaluation of stresses in lattice bars<br />
Equilibrium node 1 1<br />
Equilibrium node 3 3<br />
Table of Content<br />
ql<br />
C = = 405 kN<br />
2<br />
R<br />
2000<br />
C = = 966 kN (where α = arctg = 56.98°)<br />
senα<br />
1300<br />
T1 = C3<br />
cosα = 526 kN<br />
Equilibrium node 2 C2 = C3cosα = T1 = 526 kN<br />
Equilibrium node 4<br />
Tension rods<br />
T 2<br />
=<br />
q l<br />
2<br />
= 405 kN<br />
The tension rod T 1 requires a steel area not lower than:<br />
526000<br />
A 1344 mm<br />
391.,3<br />
2<br />
s1 ≥ = we use 6φ18 = 1524 mm 2 ,<br />
the reinforcement of the lower tension rod are located at the height of 0,12 h = 360 mm<br />
The tension rod T2 requires a steel area not lower than:<br />
405000<br />
A 1035 mm<br />
391.3<br />
2<br />
s1 ≥ = We use 4φ20 = 1257 mm 2<br />
2<br />
2
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