Avaliação da irregularidade longitudinal de pavimentos com uso de perfilômetro inercial a laser e smartphone

Abstract

By considering that the road network is in a precarious state and in need of repairs, this study has as objective measure the longitudinal irregularity from the pavement utilizing a inertial profilometer and a smartphone. The use of cellphone devices emerge as a cheap, acessible alternative to the avaliation of roughness. As the equipment available for such measurement are usually costly, some authors already work with a smartphone as an alternative to auxiliate road departments, mainly in pavement management systems.Thus, in this work the measurement of roughness was done in six streets located in Alegrete and Santa Maria, both cities from the state of Rio Grande do Sul. Each street was crossed 10 times utilizing a inertial profilometer and 2 smartphones with the applications SensorLab and SmartIRI, in two diferente vehicles, in order to obtain the average from the IRI and RMSVA values fom each pavement. After the data survey and data treatment from the obtained data, it can be consider that the longitudinal profiles, from both methods are similar. In the same way, the average from the results obtained between the applications and laser inertial profilometer generated the same value on the IRI scale for the measured streets. As such, it can be consider that the proposed objectives in this study where achieved, however, it is still necessary more research to correlate the data obtained from the inertial profilometer and the aplications, as well as the efficiency of the smartphone in measuring the roughness of the pavement.