Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of AASHTO Mechanistic Empirical Design Guide Inputs to the Performance of Tennessee Pavements
Tennessee Department of Transportation (TDOT) is among the States Departments of Transportation, taking measures to implement the Pavement Mechanistic-Empirical Design (PMED) approach and analysis from the AASHTO 1993 pavement design procedure. TDOT has funded the calibration of Tennessee distress models and traffic inputs for its interstate and state routes. In this study, local and national calibrated models are used to evaluate the performance of Long-Term Pavement Performance (LTPP) sites in Tennessee using AASHTOWare Pavement Mechanistic-Empirical Design v2.5.5 (PMED v2.5.5). Traffic inputs include level 1, LTPP traffic volume adjustment factors; level 2, Tennessee statewide traffic volume adjustment factors; and level 3 the default national traffic volume adjustment factors. The study also considers LTPP sites that are relatively close to climatic stations, Modern Era Retrospective-analysis for Research and Application (MERRA) and North American Regional Reanalysis (NARR), in distance and elevation. The distances and elevation differences were considered to eliminate the need for creating visual weather stations. The statistical analysis comparing measured and predicted distresses showed that local calibrated distress models with level 2 traffic inputs predicted relatively close to the measured distresses compared to traffic levels 1 and 3. For all traffic levels and local calibration, MERRA predicted better on bottom up cracking and permanent deformation, while NARR predicted better on terminal IRI. For national calibrations, MERRA predicted better on bottom up cracking, Jointed Plain Concrete Pavement (JPCP) transverse cracking, and total transverse cracking, while NARR predicted better on permanent deformation and terminal IRI.
Evaluation of AASHTO Mechanistic Empirical Design Guide Inputs to the Performance of Tennessee Pavements
Tennessee Department of Transportation (TDOT) is among the States Departments of Transportation, taking measures to implement the Pavement Mechanistic-Empirical Design (PMED) approach and analysis from the AASHTO 1993 pavement design procedure. TDOT has funded the calibration of Tennessee distress models and traffic inputs for its interstate and state routes. In this study, local and national calibrated models are used to evaluate the performance of Long-Term Pavement Performance (LTPP) sites in Tennessee using AASHTOWare Pavement Mechanistic-Empirical Design v2.5.5 (PMED v2.5.5). Traffic inputs include level 1, LTPP traffic volume adjustment factors; level 2, Tennessee statewide traffic volume adjustment factors; and level 3 the default national traffic volume adjustment factors. The study also considers LTPP sites that are relatively close to climatic stations, Modern Era Retrospective-analysis for Research and Application (MERRA) and North American Regional Reanalysis (NARR), in distance and elevation. The distances and elevation differences were considered to eliminate the need for creating visual weather stations. The statistical analysis comparing measured and predicted distresses showed that local calibrated distress models with level 2 traffic inputs predicted relatively close to the measured distresses compared to traffic levels 1 and 3. For all traffic levels and local calibration, MERRA predicted better on bottom up cracking and permanent deformation, while NARR predicted better on terminal IRI. For national calibrations, MERRA predicted better on bottom up cracking, Jointed Plain Concrete Pavement (JPCP) transverse cracking, and total transverse cracking, while NARR predicted better on permanent deformation and terminal IRI.
Evaluation of AASHTO Mechanistic Empirical Design Guide Inputs to the Performance of Tennessee Pavements
Sustain. Civil Infrastruct.
Akhnoukh, Amin (Herausgeber:in) / Kaloush, Kamil (Herausgeber:in) / Elabyad, Magid (Herausgeber:in) / Halleman, Brendan (Herausgeber:in) / Erian, Nihal (Herausgeber:in) / Enmon II, Samuel (Herausgeber:in) / Henry, Cherylyn (Herausgeber:in) / Mbakisya, Onyango (Autor:in) / Kelvin, Msechu (Autor:in) / Sampson, Udeh (Autor:in)
International Road Federation World Meeting & Exhibition ; 2021 ; Dubai, United Arab Emirates
21.04.2022
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
| British Library Online Contents | 2015
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| British Library Online Contents | 2017