diseño de columnas pca aci

7/25/2019 Diseo de Columnas PCA ACI

1/9

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=


2/9

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


3/9

Para estri&o de construccion utili*ar $

t'(cm)= +5

6 c,!5

en una longitud$ -.00 m.


4/9

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&


5/9

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


6/9

%sar armadura de$ 12


7/9

Diametro *asa en umero de 2arras

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8/9

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