Download - Column As
![Page 1: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/1.jpg)
Diseño de Estructuras
Columnas
![Page 2: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/2.jpg)
• Pedestales (Altura menor que tres veces su lado corto)
• Columnas Cortas• Columnas Largas
El ACI permite diseñar como columnas cortas si el efecto del momento secundario no reduce su resistencia en más de 5%.
![Page 3: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/3.jpg)
![Page 4: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/4.jpg)
![Page 5: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/5.jpg)
Capacidad de Carga
![Page 6: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/6.jpg)
Requisitos ACI para Columnas Coladas
![Page 7: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/7.jpg)
![Page 8: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/8.jpg)
![Page 9: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/9.jpg)
![Page 10: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/10.jpg)
![Page 11: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/11.jpg)
• Separación máxima de estribos:– 16 veces el diámetro varillas longitudinales– 48 veces el diámetro de los estribos– Menor dimensión lateral de la columna
![Page 12: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/12.jpg)
![Page 13: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/13.jpg)
Seguridad en columnas
• f = 0.65 columnas con estribos, 0.75 para columnas zunchadas
![Page 14: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/14.jpg)
• Solamente si el momento es pequeño o no hay momento calculado, y la columna es corta:
![Page 15: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/15.jpg)
• Hagamos un ejercicio.
![Page 16: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/16.jpg)
Carga Axial y Flexión – Tipos de Fallas
![Page 17: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/17.jpg)
![Page 18: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/18.jpg)
• Supongamos la siguiente columna, con deformación unitaria a compresión de 0.003 y a tensión de 0.002. f´c= 4,000 psi y fy = 60,000 psi.
![Page 19: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/19.jpg)
![Page 20: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/20.jpg)
![Page 21: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/21.jpg)
![Page 22: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/22.jpg)
Viga doblemente reforzada
Condición balanceada
![Page 23: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/23.jpg)
Condición balanceada
![Page 24: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/24.jpg)
• Hagamos un ejercicio
![Page 25: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/25.jpg)
Cortante
![Page 26: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/26.jpg)
• Nu es la fuerza axial factorizada que actúa simultáneamente con la fuerza cortante factorizada Vu.
• Si Vu es mayor fVc/2, se requiere refuerzo.• La separación se calcula igual que en vigas.
![Page 27: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/27.jpg)
Flexión Biaxial
![Page 28: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/28.jpg)
![Page 29: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/29.jpg)
![Page 30: Column As](https://reader035.vdocuments.co/reader035/viewer/2022070419/563dbaae550346aa9aa74df2/html5/thumbnails/30.jpg)
Ecuación Bresler Aproximada