Road viaduct in a site of geological - geotechnical complexity
DOI:
https://doi.org/10.59069/24225703e003Keywords:
bearing capacity, foundation, slope stabilizationAbstract
Geotechnical problems in engineering constructions follow paradigms of theory and practice in variable proportions. Geotechnical engineering has the possibility of using standardized research and calculation procedures. However, frequently, the constructions are located in singular places, in which the extrapolation of experiences must be carefully used. Consequently, decision-making in the definition of geotechnical components must solve the problem of the link between the application of conventional calculation methods and the adoption of non-standardized solutions, such as an adaptation to the site of implementation of the work.
The construction of an 800-meter highway viaduct, on the west slope of the Sierras Chicas, in the Province of Córdoba, Argentina, shows this type of situation. The work is located in a mountain area, on the sector corresponding to the formation fault of the hill. The geotechnical study of this sector and the experience in the construction of the work itself, concluded in the need to modify the original design. Despite having defined the structural solution and developed the new executive project, during construction the foundations of the bridges were adapted to each local geotechnical condition.
This publication shows the way in which the terrain-structure interaction has been evaluated, concluding in the definition of the foundation of the bridges. Reflections are formulated regarding the need to improve knowledge of the site through the different stages of the project, from its conception to its construction, as well as the convenience of auscultation during the useful life of the work.
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