Bridge over the Quequen Salado
DOI:
https://doi.org/10.3989/ic.1964.v17.i165.4483Abstract
This bridge has a single span, 60 m in length, and has a maximum rise of 9 m. It is made of reinforced concrete. In this project the authors tested in practice a number of theoretical investigations which they had previously carried out on the influence which the shape of a structure has on its strength and stability. They finally arrived at a solution consisting of a single reinforced concrete arch, of polygonal outline, which thereby has an increased moment of inertia, and is more similar to a hollow section. It has less weight, and is very slender. Due to the reduction in weight, the formwork is cheaper, and the stiffness is considerably improved by the addition of a series of suitably spaced diaphragms. Another feature of this project is that the arch has two hinges, one at each springer, and this causes part of the structure to be hyperstatic.
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