Anchorage lenghts in concrete footings
DOI:
https://doi.org/10.3989/ic.09.008Keywords:
structures of concrete, foundations, steel reinforcement, anchorage, crackingAbstract
The paper analyzes the simplified rule for footing whereby the anchorage length is developed from a distance equal to 0,5 h, measured form the end of the footing. This simplification is based on the assumption that the footings involved are stiff, but Eurocode EC-2 fails to mention that fact, while Spanish code EHE-08 prescribe the rule for flexible footing. The value of the soil contact pressure σt notwithstanding, the shallower a footing is, the more economical. Consequently, for soils with σt ≤ 0,2 N/ mm2 the right solution could differs from the rules laid down in the above two standards.
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References
(1) Calavera, J. “Cálculo de estructuras de cimentación”. 4ª Edición. INTEMAC. Madrid. 2000.
(2) EHE-08. “Instrucción para el proyecto y la ejecución de obras de hormigón estructural”. Mº de Fomento. Madrid 2008.
(3) EUROCÓDIGO EC-2. “Proyecto de estructuras de hormigón - Parte 1.1: Reglas generales y reglas para edificación”. EUROPEAN COMMITTEE FOR STANDARDIZATION (CEN). Bruselas. 2004.
(4) EUROCÓDICO EC-2. “Proyecto de estructuras de hormigón - Parte 3: Cimentaciones de hormigón”. EUROPEAN COMMITTEE FOR STANDARDIZATION (CEN). Bruselas. 1998.
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