C-2DISEO DE ZAPATAS

ZAPATA :TIPO

DATOSNP =19.14Tfck =210Kg/cms =1.10Kg/cmCOLUMNA DE HAMX =0.01T-mfyk =4200Kg/cmsuelo =1.70gr/cm3a =30cmMY =-0.81T-mc =1.50HA =2400Kg/mb =60cmVX =0.78Ts =1.15Df =2.00m =0.0016VY =-0.00Tf =1.50rec =5cmCALCULOS

1. RESISTENCIA DEL SUELO REDUCIDO :Para simplificar el calculo del efecto de pesos, se tomara encuenta S y sin aumentar la carga

Df [m]234s-Red [Kg/cm]0.20.30.4Depende de la profundidad :Df =2.00mDfs-RedDfVxVxInterpolando :20.2S-Red =0.2Kg/cm30.3h2. CALCULO DE LA RESISTENCIA DE SUELO NETO :Neto = s - s-RedNeto =0.90Kg/cm3. CALCULO DE AREA DE LA ZAPATA :Para:NP =19.14TAA = (Carga + (P + PPeso Suelo)) / NetoA =21266.67cm4. BASE DE LA ZAPATA :AArea = AB - Asumir la relacion:Rel = a/bEn "X":A = (a/b)BAsumir :a/b =0.75VYEn "Y":B = (AArea/(a/b))B =168.3910792042cmAsumir:B =190cmEn "X":A = (a/b)BA =126.2933094032cmAsumir:A =130cm5. VALORES DE VUELO :B60VXVX = (A - aColumna) / 2VX =50.0cmVY = (B - bColumna) / 2VY =65.0cm30VUELO MAXIMO:VMAX =65.0cm6. TIPO DE ZAPATA :ZAPATA RIGIDA :VMax 2hTIPO I7. ALTURA DE ZAPATA :h = VMax /2h =32.5cm Asumir:h =35cmA

8. PESO PROPIO ZAPATA:PZAPATA = HAABhPZAPATA =2.07T9. PESO TERRENO:PTERRENO = suelo(AB-ab)(Df-h)PTERRENO =6.42T

RESUMENZAPATAA =230cmA =2.3mNP =19.14Tfck =210Kg/cms =1.10Kg/cmB =230cmB =2.3mMX =0.01T-mfyk =4200Kg/cmsuelo =1.70gr/cmh =40cmh =0.4mMY =-0.81T-mc =1.5HA =2400Kg/mCOLUMNAa =30cma =0.3mVX =0.78Ts =1.15Df =2.00mb =60cmb =0.6mVY =-0.00Tf =1.5rec =5cm

10. FUERZAS REALES :NSP = NP+PZAPATA+PTERRENONSP =27.6T MSX = MX + (VYh)MSX =0.005212T-m MSY = MY + (VXh)MSY =-0.498T-m

11. CARACTERISTICAS MECANICAS :A =5.29mWX =2.0278333333mWY =2.0278333333m

12. PRESIONES : = (N'/A) (M'X/WX) (M'Y/WY) ZYNeto =11.0T/mY431 =5.47T/mOkNP+MSY+Comprobando :2 =4.98T/mOkMSYN-DisNetook3 =4.98T/mOkVX VY MSX4 =5.47T/mOkX MSXPRESION MAXIMA :MAX =5.47T/mX--13. PRESION NETA :12

N = N' - NPN =8.50TNeto = -(N/A)Neto-D =3.8662999918T/m

DISEO A FLEXION0,15a1. DISEO A FLEXION EN DIRECCION "X".DATOSfck =210Kg/cmA =1.3mrec =5cmVYffyk =4200Kg/cmB =1.9mX =12mmc =1.5h =0.35mfcd =140Kg/cms =1.15VX =50.0cmfyd =3652.1739130435Kg/cmBbVXf =1.5a =0.3m0,15a =0.045maCALCULO DE "f" :f = 0,15a + VXf =0.545mPERALTE EFECTIVO :d = h-rec-(X/2)d =29.4cmCALCULO DEL MOMENTO DE DISEO :AMY = Neto-D (Bf)(f/2)MY =1.0909683673T-mMd = MYfMd =1.636452551T-mLIMITES RECOMENDABLES:Lim =0.6680Lim;Rec = 0,75LimLim;Rec =0.5010Valores constantes para secciones rectangulares: =0.4 =0.68Lim;Rec = Lim;RecLim;Rec =0.3407Lim;Rec = Lim;Rec(1-Lim;Rec)Lim;Rec =0.2724CUANTIA MECANICA: = Md/(bd2fcd) =0.0071 =0.0071h =40.0cmCaso b

PARA:12lb(X) = 15(fyk/4200)[(200/fck)]lb(X) =21.0794415757cmNo hay necesidad de Dobla

2. LONGITUD DE ANCLAJE EN DIRECCION "Y" :Verificando :VY =65.0cm>h =40.0cmCaso b

PARA:16lb(Y) = 15(fyk/4200)[(200/fck)]lb(Y) =37.4745628012cmNo hay necesidad de Doblar

DISEO AL CORTE

1. DISEO AL CORTE EN DIRECCION "X" :1

PERALTE EFECTIVO :d =29.4cmd/2 =14.7cmVYV1VUELO A PARTIR DE "d/2":V1 = VX-(d/2)V1 =35.3cm

Neto-D =3.8662999918T/mB =2.3mBbVX

ESFUERZO DE CORTE:a

Vd(X) = fDiseo(BV1)Vd(X) =4.708573445TAESFUERZO "Vd":1

Vd = 2Bd0,5[((fcd))/1000]Vd =80.0090629866T

VERIFICACION:SI:Vd(X) < VdokVd(X) =4.708573445T