Avaliação estrutural de segmento da av. Floriano Peixoto na zona urbana de Campina Grande-PB.

Abstract

This work presents the structural evaluation of the paving of the extension of the Marechal Floriano Peixoto avenue in the Campina Grande-Paraíba municipality, where field materials of the segment were collected in the final phase of construction, with asphalt pavements dimmed by the DNER's empirical method. Tests performed in the laboratory were used for physical and mechanical characterization of basement and subbase materials, as well as subgrade, as well as the tests for the determination of the resilience modulus and tensile strength in samples of the bituminous layer of the pavement, which obtained through the rotary extractor. In a second step, maximum deflections were made on alternating stakes, as well as obtaining the deflection basins in the occurrences of Dmax, Dméd and Dmim. The Benkelman beam, owned by the Department of Roads and Roadways of the state of Paraíba-DER / PB, was used to survey the deflections. With the use of the RETRAN5L program, the retro-analysis technique was used to identify the work modules of the pavement layers and the subgrade of the study area and thus be associated with the results of the destructive tests, generating enough data to evaluate the behavior of the pavement under analysis. For mechanistic analysis, computational programs using elastic layer theory were used, from the parameters obtained in laboratory tests; one of the programs used was the FEPAVE II finite element program, using the elastic parameters obtained in dynamic load-repeated triaxial tests, aiming the determination of the resilience modules of the granular layers; to determine the tensions and deformations at the most critical points of the structure, thus making a linear mechanistic analysis of the structure under study.