DISEÑO DE UNA NAVE INDUSTRIAL
Se va ha Diseñar una Nave Industrial, con techo de dos aguas apoyadas en muros de albañilería, con las siguientes características:
1) Terreno Disponible:
A x L = 17 x 27 m2
2) Ubicación de la Nave Industrial:
La Merced
3) Cobertura de Estructura Metálica con Techo de Calamina:
Calamina Sider Perú:
MEDID. NOMIN. MEDIDAS UTILES DATOS ADICIONALES
4) Carga de Viento y lluvia:
- Viento: 70 Km./h
- Lluvia: 15 mm = 229.13 Kg./m2
Largo Ancho Largo Ancho Áreae
(mm)Peso
(Kg./m2)
Nº Apoyos Aplicación
3.6 0.83 3.45 0.75 2.6 0.4 3.66 3Lluvia
Torrencial
DISEÑO DE LA ARMADURA
TIJERAL O ARMADURA LARGUERO O VIGUETA
ARMADURA
2.83 2,83 2.83 2,83 2.83 2,83
1 32 654
4.9
1.63
3.27 3.27
1.63
METRADO DE CARGAS
Peso Cobertura = 3.66 Kg./m2
Peso Estructura Metálica: 20 Kg./m2 (Verificar)
Carga Viva: 30 Kg. /m2
Área Tributaria: 5.4 x 2.833 m2
CARGA MUERTA
PD = 23.66 x (5.4 x 2.833) = 0.362 Tn.
CARGA VIVA
PL = 30 x (5.4 x 2.833) = 0.458 Tn.
CALCULO DE LA VELOCIDAD DE DISEÑO
H=9m
Vh = V (h/10) ^0.22 = 70 x (9/10) ^0.22 = 68.4 Km/h < 75 Km/h
Vh = 75 Km/h
CALCULO DE LA PRESION DEL VIENTO
Ph = 0.005 x C x Vh^2
Par superficies Inclinadas: C = +0.7 y -0.3 en Presión y Succión (Barlovento) y C = 0.6 Succión en (Sotavento).
PRESION EN BARLOVENTO
Ph = 0.005 x 0.7 x 75^2 = 19.69 Kg. /m2
Pw = 19.69 x 5.4 x 2.833 = 0.301 Tn.
Pwx = Pw Sen 30 = 0.301 x 4.9 /8.2 = + 0.180 Tn.
Pwy = Pw Cos 30 = 0.301 x 8.5 /8.2 = - 0.312 Tn. α=30º
SUCCION EN BARLOVENTO
Ph = 0.005 x 0.3 x 75^2 = 8.438 Kg. /m2
Pw = 8.438 x 5.4 x 2.833 = 0.128 Tn.
Pwx = Pw Sen 30 = 0.128 x 4.9 /8.2 = - 0.077 Tn.
Pwy = Pw Cos 30 = 0.128 x 8.5 /8.2 = + 0.133 Tn.
SUCCION EN SOTAVENTO
Ph = 0.005 x 0.6 x 75^2 = 16.875 Kg. /m2
Pw = 16.875 x 5.4 x 2.833 = 0.258 Tn.
Pwx = Pw Sen 30 = 0.258 x 4.9 /8.2 = + 0.154 Tn.
Pwy = Pw Cos 30 = 0.258 x 8.5 /8.2 = + 0.268 Tn.
8.5
8.24.9
RESUMEN
CARGA MUERTA
PD = 0.362 Tn.
CARGA VIVA
PL = 0.458 Tn.
PRESION EN BARLOVENTO
Pwx = + 0.180 Tn.
Pwy = - 0.312 Tn.
SUCCION EN BARLOVENTO
Pwx = - 0.077 Tn.
Pwy = + 0.133 Tn.
SUCCION EN SOTAVENTO
Pwx = + 0.154 Tn.
Pwy = + 0.268 Tn.
GRAFICO DE DISPOSICION DE CARGA MUERTA Y VIVA
GRAFICO DE DISPOSICION DE CARGA DE VIENTO V1 (PRESION-SUCCION EN BARLOVENTO-SOTAVENTO)
PD, PL
PD/2, PL/2
PWX
PD, PLPD, PL
PD, PL
PD/2, PL/2
PWX/2 PWX/2
PWX/2PWX/2
PWX
PWX
PWX
PWY/2 PWY/2
PWY/2 PWY/2
PWY
PWY
PWY
PWY
GRAFICO DE DISPOSICION DE CARGA DE VIENTO V2 (SUCCION-SUCCION EN BARLOVENTO-SOTAVENTO)
DISPOSICION DE CARGA EN LOS NUDOS
CARGA MUERTA
NUDO Fx (tn) Fy (tn)1 0 -0.1817 0 -0.1818 0 -0.3629 0 -0.36210 0 -0.36211 0 -0.36212 0 -0.362
PWX
PWX/2 PWX/2
PWX/2PWX/2
PWX
PWX
PWX
PWY/2 PWY/2
PWY/2 PWY/2
PWY
PWY
PWY
PWY
CARGA VIVA
NUDO Fx (tn) Fy (tn)1 0 -0.2297 0 -0.2298 0 -0.4589 0 -0.458
10 0 -0.45811 0 -0.45812 0 -0.458
CARGA VIENTO V1
NUDO Fx (tn) Fy (tn)1 0.090 -0.1567 0.077 0.1348 0.154 0.2689 0.154 0.268
10 0.167 -0.02211 0.180 -0.31212 0.180 -0.312
CARGA VIENTO V2
NUDO Fx (tn) Fy (tn)1 -0.039 0.0677 0.077 0.1348 0.154 0.2689 0.154 0.268
10 0.038 0.20111 -0.077 0.13312 -0.077 0.133
DEZPLAZAMIENTOS EN LOS NUDOS DEBIDO A LAS CARGAS
CARGA MUERTA
Nudo u (m) v (m)1 0.0000 0.0002 0.0002 -0.0023 0.0004 -0.0034 0.0006 -0.0035 0.0008 -0.0036 0.0010 -0.0027 0.0012 0.0008 0.0004 -0.0029 0.0004 -0.00310 0.0000 -0.00211 0.0009 -0.00312 0.0008 0.000
CARGA VIVA
Nudo u (m) v (m)1 0 02 0.0003 -0.00253 0.0005 -0.00324 0.0008 -0.00335 0.001 -0.00326 0.0013 -0.00257 0.0015 08 0.0005 -0.00259 0.0004 -0.003210 0.0008 -0.003111 0.0011 -0.003212 0.001 -0.0025
CARGA DE VIENTO V1
Nudo u (m) v (m)1 0 02 0.0002 -0.00093 0.0003 -0.00084 0.0005 -0.00055 0.0005 -0.00026 0.0005 07 0.0005 08 0.0004 09 0.0003 -0.000210 0.0002 -0.000511 0.0003 -0.000812 0.0004 -0.0008
CARGA DE VIENTO V2
Nudo u (m) v (m) 1 0 02 -0.0001 0.0013 -0.0001 0.00134 -0.0002 0.00145 -0.0003 0.00146 -0.0004 0.00117 -0.0005 08 -0.0005 0.00119 -0.0001 0.001410 -0.0003 0.001311 -0.0004 0.001312 -0.0004 0.001
FUERZAS AXIALES EN LOS ELEMENTOS PRODUCIDOS DEBIDO A LAS CARGAS
CARGA MUERTA
Elemento i j Sección Fuerzas (tn,)1 1 2 s 1.5652 2 3 s 1.5653 3 4 s 1.2554 4 5 s 1.2555 5 6 s 1.5656 6 7 s 1.5657 7 8 s -1.8068 8 9 s -1.4499 9 10 s -1.087
10 10 11 s -1.08711 11 12 s -1.44912 12 1 s -1.80613 2 12 s -0.00314 12 3 s -0.35715 3 11 s 0.17916 11 4 s -0.47617 4 10 s 0.72118 4 9 s -0.47619 9 5 s 0.17920 5 8 s -0.35721 8 6 s -0.003
CARGA VIVA
Elemento i j Sección Fuerzas (t)1 1 2 s 1.982 2 3 s 1.983 3 4 s 1.5884 4 5 s 1.5885 5 6 s 1.986 6 7 s 1.987 7 8 s -2.2858 8 9 s -1.8339 9 10 s -1.375
10 10 11 s -1.37511 11 12 s -1.83312 12 1 s -2.28513 2 12 s -0.00414 12 3 s -0.45115 3 11 s 0.22716 11 4 s -0.60317 4 10 s 0.91218 4 9 s -0.60319 9 5 s 0.22720 5 8 s -0.45121 8 6 s -0.004
CARGA DE VIENTO V1
Elemento i j Sección Fuerzas (t)1 1 2 s 1.282 2 3 s 1.283 3 4 s 0.9154 4 5 s 0.2395 5 6 s -0.076 6 7 s -0.077 7 8 s 0.1698 8 9 s -0.019 9 10 s -0.189
10 10 11 s 0.01211 11 12 s -0.18912 12 1 s -0.38713 2 12 s -0.00214 12 3 s -0.41915 3 11 s 0.2116 11 4 s -0.55917 4 10 s 0.06618 4 9 s 0.47219 9 5 s -0.17820 5 8 s 0.35621 8 6 s 0.001
CARGA VIENTO V2
Elemento i j Sección Fuerzas (t)
1 1 2 s -0.5392 2 3 s -0.5393 3 4 s -0.3874 4 5 s -0.5425 5 6 s -0.8496 6 7 s -0.8497 7 8 s 1.0698 8 9 s 0.8939 9 10 s 0.714
10 10 11 s 0.75811 11 12 s 0.84612 12 1 s 0.93313 2 12 s 0.00114 12 3 s 0.17615 3 11 s -0.08816 11 4 s 0.23317 4 10 s -0.53218 4 9 s 019 9 5 s 0.4720 5 8 s 0.35421 8 6 s 0.002
COMBINACIONES DE CARGAS EN TONELADAS
BARRA 1.4D 1.2D + 0.5L 1.2D+1.6L + 1.2D+1.6L + 1.2D+1.6L + 1.2D+1.6L + 0.8W1(O-E) 0.8W2(O-E) 0.8W1(E-O) 0.8W2(E-O)1 2.191 2.868 6.052 4.615 5.252 4.4312 2.191 2.868 6.052 4.615 5.252 4.4313 1.757 2.300 4.766 3.737 3.964 3.5534 1.757 2.300 4.230 3.613 3.429 3.4295 2.191 2.868 4.406 4.367 4.182 4.1836 2.191 2.868 4.406 4.367 4.182 4.1837 -2.528 -3.310 -5.678 -4.968 -5.680 -4.9688 -2.029 -2.655 -4.670 -3.957 -4.656 -3.9579 -1.522 -1.992 -3.646 -2.933 -3.646 -2.933
10 -1.522 -1.992 -3.492 -2.898 -3.492 -2.89811 -2.029 -2.655 -4.826 -3.995 -4.826 -3.99512 -2.528 -3.310 -6.142 -5.077 -6.143 -5.07813 -0.004 -0.006 -0.012 -0.009 -0.011 -0.00814 -0.500 -0.654 -1.479 -1.009 -1.481 -1.01015 0.251 0.328 0.743 0.508 0.744 0.50816 -0.666 -0.873 -1.975 -1.350 -1.975 -1.35017 1.009 1.321 2.372 1.899 2.372 1.89918 -0.666 -0.873 -1.158 -1.536 -1.159 -1.16019 0.251 0.328 0.436 0.954 0.436 0.43620 -0.500 -0.654 -0.865 -0.867 -0.868 -0.86821 -0.004 -0.006 -0.009 -0.008 -0.008 -0.008
DISPOSICION DE CARGAS EN KIPS FUERZAS DE DISEÑO
BARRA 1.4D 1.2D + 0.5Lr 1.2D+1.6Lr + 1.2D+1.6Lr + 1.2D+1.6Lr + 1.2D+1.6Lr + BARRA Fuerza Ni 0.8W1(O-E) 0.8W2(O-E) 0.8W1(E-O) 0.8W2(E-O) (Kips)1 4.83 6.32 13.34 10.18 11.58 9.77 1 13.342 4.83 6.32 13.34 10.18 11.58 9.77 2 13.343 3.87 5.07 10.51 8.24 8.74 7.83 3 10.514 3.87 5.07 9.33 7.97 7.56 7.56 4 9.335 4.83 6.32 9.72 9.63 9.22 9.22 5 9.726 4.83 6.32 9.72 9.63 9.22 9.22 6 9.727 -5.58 -7.30 -12.52 -10.95 -12.52 -10.95 7 -12.528 -4.47 -5.85 -10.30 -8.73 -10.27 -8.73 8 -10.309 -3.36 -4.39 -8.04 -6.47 -8.04 -6.47 9 -8.04
10 -3.36 -4.39 -7.70 -6.39 -7.70 -6.39 10 -7.7011 -4.47 -5.85 -10.64 -8.81 -10.64 -8.81 11 -10.6412 -5.58 -7.30 -13.54 -11.19 -13.55 -11.20 12 -13.5513 -0.01 -0.01 -0.03 -0.02 -0.02 -0.02 13 -0.0314 -1.10 -1.44 -3.26 -2.23 -3.27 -2.23 14 -3.2715 0.55 0.72 1.64 1.12 1.64 1.12 15 1.6416 -1.47 -1.92 -4.36 -2.98 -4.36 -2.98 16 -4.3617 2.23 2.91 5.23 4.19 5.23 4.19 17 5.2318 -1.47 -1.92 -2.55 -3.39 -2.56 -2.56 18 -3.3919 0.55 0.72 0.96 2.10 0.96 0.96 19 2.1020 -1.10 -1.44 -1.91 -1.91 -1.91 -1.91 20 -1.9121 -0.01 -0.01 -0.02 -0.02 -0.02 -0.02 21 -0.02
BARRA Ni(kips) L (m) PERFIL Fcr Pn (kips) y(in) 1 13.34 2.84 2L 2x1 1/4 x1/4 48.8 48.8 0.7082 13.34 2.83 2L 2x1 1/4 x1/4 48.8 0.7083 10.51 2.83 2L 2x1 1/4 x1/4 48.8 0.7084 9.33 2.83 2L 2x1 1/4 x1/4 48.8 0.7085 9.72 2.83 2L 2x1 1/4 x1/4 48.8 0.7086 9.72 2.84 2L 2x1 1/4 x1/4 48.8 0.7087 -12.52 3.28 2L 2 1/2 x2 x1/4 9.250 16.75 0.7848 -10.3 3.27 2L 2 1/2 x2 x1/4 9.305 16.85 0.7849 -8.04 3.27 2L 2 1/2 x2 x1/4 9.305 16.85 0.78410 -7.7 3.27 2L 2 1/2 x2 x1/4 9.305 16.85 0.78411 -10.64 3.27 2L 2 1/2 x2 x1/4 9.305 16.85 0.78412 -13.55 3.28 2L 2 1/2 x2 x1/4 9.250 16.75 0.78413 -0.03 1.64 L 2 x 2 x 1/8 20.55 8.45 0.54614 -3.27 3.97 2L 2 1/2 x2 x1/4 6.350 11.5 0.78715 1.64 3.27 L 2 x 2 x 1/8 15.7 0.54616 -4.36 4.32 2L 2 1/2 x2 x1/4 5.350 9.69 0.78717 5.23 4.9 L 2 x 2 x 1/8 15.7 0.54618 -3.39 4.32 2L 2 1/2 x2 x1/4 5.350 9.69 0.78719 2.1 3.27 L 2 x 2 x 1/8 15.7 0.54620 -1.91 3.97 2L 2 1/2 x2 x1/4 6.350 11.5 0.78721 -0.02 1.64 L 2 x 2 x 1/8 20.55 8.45 0.546
SELECCIÓN DEL PERFIL