Experimental test design, assessment of the state of the art of the existing work of art; Final and Executive Project of the structural consolidation interventions and restoration of the durability conditions of existing materials
The viaduct, built in 1981, has a total length of about 400 meters and from a structural point of view it consists of seven simply supported spans with a distance between the piers of 36 meters, the portion of the building that crosses the canal consists of a 34-meter central beam resting on two 17.5-meter overhangs that are part of two cantilevers with an adjacent 36.0-meter span.
The beams are of the caisson type in C.A.P.
In order to be able to analyze the current state of the existing superstructure, specific tests were carried out in situ and in the laboratory.
In particular, for the purposes of a correct identification of the structural system and a mechanical characterization of the materials, the following tests were carried out:
- Core drilling and crushing tests for concrete
- Collection of reinforcing bars and tensile tests
- Tracing and detensioning of prestressing cables
- Dynamic identification tests of the deck
In addition, in order to identify the stratigraphic and groundwater conditions within the significant volume of the subsoil, and to characterize, together with the laboratory investigations, the mechanical behavior of the various formations present, the following were performed:
- Dynamic penetrometric tests S.P.T.
- MASW-type investigations (Multichannel Analysis of Surface Waves)
Downstream of the results of the tests, the vulnerability assessment and the design of the interventions will be carried out.
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