Post on 01-Mar-2018
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Diseo de Columnas segn la norma ACI 318-08 por mtodo PCA
Planilla Elaborada por: Univ. Edwin Santos ColqueColumna : frame COL-1
Datos de la columna Defina el Tipo de Seccion Acero a Utilizar
L = 3.86 m. Rectanular Diametro de Acero = 12! = ".# $ = 3" cm. Diametro del estri$o = 8
Cur%atura = & t = '( cm. 0.65
Datos iniciales Armado preliminar conf)c = &*" !+cm& 8 fierros
f, = '&"" !+cm& n = &rec = &.( cm.
-u = .(# T.
/u0 = *."* Tm. .(# ! &8.3(/u, = ".6&& Tm. CU/-L1
"# $m
Cumple Col. Corta
&6.' %! (3.'8((3
&6.' &&
30
".6(
&i ' /u0 2 /u,
&i ' /u0 /u,
Rectanular *.("
Calculo del Mox Asumido = 1(#1 T.m.
Calculo de g =
".'& ".8&
"."*8 ".'"
4 = 0.05 de la Ta$la n5 *3
"."""
= ".""3 7 CU/-L1 Ast =
Resultados -reliminares
= 12 mm.
ro 8 fierros
As = #."( cm& Acero suficiente, ir al Paso 6
= "."" 7 CU/-L1
Coef. -i9 =
Preliminar.- Controlar el Pandeo
Paso 1(- Asumir %alor de ;*
;*=
Paso )(-Asumir relacion de /0 , /,
Paso 3(-Relacion /o0 , /o,
Paso "(-Dise o Unia0ial
Paso #(-Calculo de la cuantia
Astmin=
Astmax=
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Planilla Elaborada por: Univ. Edwin
q = ".*3 Ta$la *3 *omentos
+eales
".'& Coef.0= ".*& /o0 = #.#( T.m.
Coef.,= ".*& /o, = 6.63 T.m.".83
".'
Po = &8.#( Ton.
De la i. 5 6 ".63
".*"
Utilizar la 1cuacion A
"."#
Resultado = 0(,8 Ok pero Reisar
1ntonces usar : 8 12
a zona de confinamiento $ zona intermedia
*" **.&(
*8 *"
.& 13 cm. *8
*(
*3
!"
!0
#ntonces usar $ 8 12
'(
'" Armad(8.3 6'.33 65.00 cm.
'(
'(
(cm.
a zona de confinamiento
*.( cm&
2.00 m.
usar: 6 c/15
*.(" cm&
%sar $ 12 (cm.$ zona intermedia
".38 cm& Planilla Elaborada po".(6 cm& %sar $ 6 &'(cm)=
Paso (-Calculo de Coef(., Coef(/
0 =
, =
Paso ,(-Calculo de ;* Real
;* =
Paso 8(-Calculo de la relacion real de /omentos
Paso (- Calculo del espaciamiento
Paso 10(> Calculo de la lonitud por confinamiento Lo
Paso 11(> Calculo del acero de refuerzo trans%ersal
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Para estri&o de construccion utili*ar $
t'(cm)= +5
6 c,!5
en una longitud$ -.00 m.
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mm.
mm.
8
cm
Resumen para
ir a la ta$la
Coef. -u = 0.+-
Coef. /u= 0.0!
/r a a&las de
fierros
Coef. 0 = 0."
Coef. , = ".'
"." cm&
!".50 cm&
!0.00 cm&
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Santos Colque
4 = ".*3
".&8
A
".8
;
".*(
*(
.& 1# cm.
*(
*"
*"
para $ 0 t = 3" cm 0 3" cm
Definiti%o :
%sar #stri&os
Lo?9cm= 6(.""
12 c !"
Lo?9cm= 6(.""
12 c !"
: Univ. Edwin Santos Colque
"0
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%sar armadura de$ 12
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Diametro *asa en umero de 2arras
mm( g4m 1 ) 3 " # , 8
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7/25/2019 Diseo de Columnas PCA ACI
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