HORMIGON: H_25 25 MPa 0.003
ACERO: ADN420 420 MPa Es= 210000 Mpa
h = 50 cm As=A's = 18.5 cm²
b = 50 cm Ast = 45.6 cm²
d' = 4cm Ag = 2500 cm²
d = 46 cm 1.82%
Barras Extremas:
10 # 6 28.5 cm² 100 mm
Barras Laterales:
6 # 6 17.1 cm² 100 mm
Estribos: # 3 @ 250 mm
(@max:
305 mm)
0.85) Armadura Traccionada Armadura Comprimida Hormigon
Punto c a fs As.fs f's A's.f's C = 0.85 f'c.a.b
[cm] [cm] [Mpa] [T] [Mpa] [ T ] [ T ]
Pn(max) =
Padm Pn(adm) = 0,8.Pn(max) =
1 60 51.0 -0.0007 -147 -27.2 0.0028 420 77.8 541.88
2 55.4 47.1 -0.0005 -106.63 -19.8 0.0028 420 77.8 500.07
3 50.7 43.1 -0.0003 -58.885 -10.9 0.0028 420 77.8 458.27
4 46.1 39.2 0.0000 -1.5613 -0.3 0.0027 420 77.8 416.47
5 41.5 35.3 0.0003 68.5537 12.7 0.0027 420 77.8 374.67
6 36.9 31.3 0.0007 156.279 29.0 0.0027 420 77.8 332.87
7 32.2 27.4 0.0013 269.202 49.9 0.0026 420 77.8 291.06
Pb 27.6 23.5 0.0020 420 77.8 0.0026 420 77.8 249.26
8 24.4 20.8 0.0027 420 77.8 0.0025 420 77.8 220.56
9 21.2 18.1 0.0035 420 77.8 0.0024 420 77.8 191.85
10 18.1 15.4 0.0046 420 77.8 0.0023 420 77.8 163.15
11 14.9 12.7 0.0063 420 77.8 0.0022 420 77.8 134.45
12 11.7 10.0 0.0088 420 77.8 0.0020 414.769 76.8 105.74
13 8.5 7.3 0.0132 420 77.8 0.0016 334.572 62.0 77.04
P=0 5.35 4.5 0.0228 420 77.8 0.0008 159.118 29.5 48.33
14 4.01 3.4 0.0314 420 77.8 0.0000 2.15785 0.4 36.25
15 2.68 2.3 0.0486 420 77.8 -0.0015 -311.76 -57.8 24.17
M=0 Tracción Pura
CARGAS DE DISEÑO:
150 20
120 10
160 5
50 7
200 27
MATERIALES:
→ f'c = ec=
→ fy =
GEOMETRIA:
AsE=
AsL=
rt =
ARMADURA DE DISEÑO:
s1 =
s2 =
(b1 =
ese's
Pnmax
Nu [t]
Mu [tm]
Mn
s2
COLUMNAS CORTAS - ACI 318-05
0 5 10 15 20 25 30 35 40 45
-300
-200
-100
0
100
200
300
400
500
600
2
øPn(max): 463.5
øPn(adm): 370.83 4 5
6
7
8
9
11
12
13
14
15
16
17
18
19
-172.4
DIAGRAMA DE INTERACCION
Mn [Tm]
Pn [T]
