7/29/2019 Concrete Column Design

1/3

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

7/29/2019 Concrete Column Design

2/3

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

=

7/29/2019 Concrete Column Design

3/3

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

=