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EnglishThe development of pavement performance models is a critical component of a multi-year analysis within a pavement management system (PMS).The paper describes an empirical-mechanistic roughness progression model, as function of loads, climate conditions, structural layout, overall construction quality and material properties that has been implemented in a computer program. The analysis is performed by dividing the road section into 0.30 m long sub-sections. Material properties and layers thickness’ variations are described through a second order autoregressive process and assigned to each sub-section. A starting profile is randomly assigned to road section basing on construction specifications. The computer simulation is performed through an step-by-step process; during each time step the program calculates the dynamic loads, the stress and the permanent deformation induced by 16 types of heavy vehicles in each sub-section, according to 8 daily climatic conditions (every three hours). At the end of the step, the total rutting and the degradation of asphalt modulus due to fatigue cracking is calculated for each sub-section, the profile is updated and the IRI index of the road section is evaluated. Roughness deterioration curves derived in such manner highlight that daily temperature variations seems to play a critical role in the evaluation of roughness and rutting progression. Furthermore, a comparison with curves developed through empirical models proposed by world bank has shown a fairly good agreement.
Nicolosi, V., & D'Apuzzo, M. (2002). Development of semi-mechanistic roughness performance model by computer simulation edited by Farad Khosrowshahi , London november 2002.. Paper presented at 3rd International conference decision making in urban and civil engineering (DMUCE), London.
| Autori: | |
| Autori: | Nicolosi, V; D'Apuzzo, M |
| Titolo: | Development of semi-mechanistic roughness performance model by computer simulation edited by Farad Khosrowshahi , London november 2002. |
| Nome del convegno: | 3rd International conference decision making in urban and civil engineering (DMUCE) |
| Luogo del convegno: | London |
| Anno del convegno: | 2002 |
| Numero del convegno: | 3rd |
| Rilevanza: | Rilevanza internazionale |
| Sezione: | contributo |
| ???metadata.dc.date.created???: | 2002-11 |
| Data di pubblicazione: | nov-2002 |
| Settore Scientifico Disciplinare: | Settore ICAR/04 - Strade, Ferrovie ed Aeroporti |
| Lingua: | English |
| Tipologia: | Intervento a convegno |
| Citazione: | Nicolosi, V., & D'Apuzzo, M. (2002). Development of semi-mechanistic roughness performance model by computer simulation edited by Farad Khosrowshahi , London november 2002.. Paper presented at 3rd International conference decision making in urban and civil engineering (DMUCE), London. |
| Appare nelle tipologie: | 02 - Intervento a convegno |
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