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Structural Engineering and Mechanics Volume 52, Number 4, November25 2014 , pages 767-786 DOI: https://doi.org/10.12989/sem.2014.52.4.767 |
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Design of isolated footings of circular form using a new model |
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Arnulfo Luévanos Rojas
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| Abstract | ||
| This paper presents the design of reinforced concrete circular footings subjected to axial load and bending in two directions using a new model. The new model considers the soil real pressure acting on contact surface of the circular footings and these are different, with a linear variation in the contact area, these pressures are presented in terms of the axial load, moments around the axis \"X\" and the axis \"Y\". The classical model takes into account only the maximum pressure of the soil for design of footings and it is considered uniform at all points of contact area. Also, a comparison is presented in terms of the materials used (steel and concrete) between the two models shown in table, being greater the classical model with respect the new model. Therefore, the new model is the most appropriate, since it is more economic and also is adjusted to real conditions. | ||
| Key Words | ||
| circular footings design; ground reaction; moments; bending shear; punching shear | ||
| Address | ||
| Arnulfo Luévanos Rojas: Faculty of Engineering, Science and Architecture, Juárez University of Durango State, Av. Universidad S/N, Fracc. Filadelfia, CP 35010, Gómez Palacio, Durango, México | ||