Herramientas gráficas de diseño para determinar la pendiente mínima de autolimpieza en tuberías de alcantarillado sanitario de pequeño diámetro

F. Castro Carrera; E.J. La Motta

doi:10.4995/ia.2020.12260

Autores/as

F. Castro Carrera Pontificia Universidad Católica del Ecuador
E.J. La Motta Universidad de Nueva Orleans

DOI:

https://doi.org/10.4995/ia.2020.12260

Palabras clave:

autolimpieza, tensión de corte, velocidad autolimpiante, diseño, alcantarillado sanitario

Resumen

Este artículo presenta herramientas gráficas para diseño de tuberías de alcantarillado sanitario con autolimpieza por tensión de corte, para diámetros entre 100 y 400 mm, usando dos diferentes criterios: primero, considerando la suposición que con el caudal mínimo se desarrollará un esfuerzo cortante igual al generado por la tubería llena a una velocidad de 0.6, 0.7 y 0.8 m/s, y segundo, usando tensiones de corte mínimas de 0.867, 1.4 y 2 N/m². Estas herramientas consisten en curvas para determinar la pendiente de autolimpieza, la profundidad relativa, el caudal máximo que puede ser transportado con una profundidad relativa de 0.8D, y las velocidades para flujo lleno y parcialmente lleno para un caudal mínimo dado. También se incluyen ecuaciones para determinar tanto un valor aproximado de la pendiente de autolimpieza, como la pendiente exacta. Se consideró un coeficiente de rugosidad de Manning constante de 0.009 s/m^1/3, correspondiente a tuberías nuevas de PVC.

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Biografía del autor/a

F. Castro Carrera, Pontificia Universidad Católica del Ecuador

Facultad de Ingeniería

E.J. La Motta, Universidad de Nueva Orleans

Departamento de Ingeniería Civil

Citas

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