concrete column design
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7/29/2019 Concrete Column Design
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Concrete Column Design
Partial safty coefficients
C 1.5
Initial sizing
l 5
hc =l
300.167
bc 60 hc 100 Ac =hc bc 0.62
fck 30 -for concrete class C30/37
fcd =fck
C20
fyd 435 2
Design values for ULS
MEd.z 212.76 MEd.y 2320.39 NEd 633.3
Vz 484.16 Vy 46.06
MEd.y =+MEd.y 0.25 N Ed 2.479 103
eccentricity from the column-arch joint
n =NEd
Ac fcd0.053
lim 52 determined in a simplified way, taking into account the value of axial force (KissZ, One T, Proiectarea Structurilor de Beton dupa SR EN 1992-1, Appendix IV,Figure IV.4, page 328)
iz =bc
120.173 iy =
hc
120.289
z =0.7 l
iz20.207 y =
0.7 l
iy12.124
=MEd.y
bc hc2
fcd
0.207 =NEd
hc bc fcd0.053
tot 0.5
Astot =tot bc hcfcd
fyd137.931
218 32 As 144.72
2
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NRd =+bc hc fcd As fyd 1.83 104
=NEd
NRd0.035 => n 1.21
0.8 - defines the height of the compressed zone;=0.8 for lower concrete class than C50/60
z =NEd
fcd hc bc 400.071
y =NEd
fcd bc hc 400.069
s2 =fyd 435 2 ys1 =
bc
2 40 0.26
MRd.z + fcd z 1 0 . 5 z hc bc 402
As
2s2 bc 40 40 NEd ys1
=MRd.z 1.817 103
ys2 =hc
240 0.46
MRd.y + fcd y 1 0 . 5 y bc hc 402
As
2s2 hc 40 40 NEd ys2
=MRd.y 3.196 103
=
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600
1 1
VRd.cy =
+CRd.c 1 k 100 l fck
1
3
2
2
3
k1 cp
60 100 568.248
VRd.cy =
+0.035 fck
1
2k
3
2
2
1
2
k1 cp
60 100 322.857
=
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