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PERFORMANCE MODELS AND PREDICTION OF INCREASE IN OVERLAY NEED IN THE DANISH STATE HIGHWAY PAVEMENT MANAGEMENT SYSTEM, BELMAN.
| 题名： | PERFORMANCE MODELS AND PREDICTION OF INCREASE IN OVERLAY NEED IN THE DANISH STATE HIGHWAY PAVEMENT MANAGEMENT SYSTEM, BELMAN. |
| 作者： | Jansen-JM; Schmidt-B |
| 关键词： | CONFERENCES-; DENMARK-; PAVEMENT-PERFORMANCE; PERFORMANCE-PREDICTION-MODELS; PAVEMENT-MANAGEMENT-SYSTEMS; ROUGHNESS-; DEGRADATION-; RESTORATION-; FORECASTING-; VALIDATION-; FIELD-MEASUREMENTS; BUDGET-CONSTRAINTS |
| 摘要： | A primary requirement for a more reliable long-term analysis for maintenance management is to take into account the deterioration of pavement characteristics and the updating of pavement condition parameters after intervention. A significant effort has been invested in the general improvement of performance models in the Danish State Highway pavement management (PM) system, BELMAN, after discarding all recent models in the purchased, ready-made PM system. Models for performance of degradation and restoration of rough surfaces and for forecasting the need for increase in overlay within the analysis period have been successfully established. The roughness degradation and restoration model was developed by means of bump integrator measurements carried out on the Danish State Highway Network for several decades, including both routine and before-and-after measurements. The compound model was validated in EDP models simulating the development of roughness during 100 years of presumed rehabilitation. The forecasting model enables the PM system to forecast possible needs for future overlays and increases in calculated strengthening overlay thickness if strengthening is deferred. The model is based on the Danish analytical-empirical approach to pavement design. It uses the macroassumption, derived from extensive Danish experience in the variation of pavement E-modules, that referring the overall deterioration of the pavement to the asphalt concrete E-module is reasonable in a long-term view. Despite this rough assumption, the model has been verified and validated against an analysis of 2,000 back-analyzed, falling-weight deflectometer measurements from the State Highway Network with outstanding correlation. Implementing these and other models in BELMAN, it has been possible to use the PM system for its major purpose of forecasting and analyzing future perspectives under different budget constraints, giving explainable evolutions in main pavement characteristics. |
| 总页数： | Conference Title: Third International Conference on Managing Pavements. Location: San Antonio, Texas. Sponsored by: Transportation Research Board |
| 报告类型： | 科技报告 |
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