Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Exploring the relationship between the International Roughness Index (IRI) and the ISO 8608 roughness coefficient (Gd(n 0))
Globally, diverse agencies employ varied metrics to gauge road roughness, complicating the exchange of information for pavement maintenance. This study addresses this challenge by establishing a theoretical connection between the International Roughness Index (IRI) and the ISO 8608 Power Spectral Density (PSD)-based roughness coefficient, namely Gd(n 0). Based on random vibration theory, this paper first deduces a closed-form explicit solution for IRI related to Gd(n 0), solidifying a theoretical link. Next, the variability and convergence of the proposed solution are examined through Monte Carlo simulations using a quarter-car vehicle model with the Golden Car parameters. Then, we compare computed results from this study with those existing solutions from past studies, verifying that the proposed solution captures the curve trend well and agrees with the average value of existing solutions based on field measurement data. Finally, this paper proposes the IRI values corresponding to various ISO road class thresholds and a new Gd(n 0) scale for ride quality assessment of highways.
Exploring the relationship between the International Roughness Index (IRI) and the ISO 8608 roughness coefficient (Gd(n 0))
Globally, diverse agencies employ varied metrics to gauge road roughness, complicating the exchange of information for pavement maintenance. This study addresses this challenge by establishing a theoretical connection between the International Roughness Index (IRI) and the ISO 8608 Power Spectral Density (PSD)-based roughness coefficient, namely Gd(n 0). Based on random vibration theory, this paper first deduces a closed-form explicit solution for IRI related to Gd(n 0), solidifying a theoretical link. Next, the variability and convergence of the proposed solution are examined through Monte Carlo simulations using a quarter-car vehicle model with the Golden Car parameters. Then, we compare computed results from this study with those existing solutions from past studies, verifying that the proposed solution captures the curve trend well and agrees with the average value of existing solutions based on field measurement data. Finally, this paper proposes the IRI values corresponding to various ISO road class thresholds and a new Gd(n 0) scale for ride quality assessment of highways.
Exploring the relationship between the International Roughness Index (IRI) and the ISO 8608 roughness coefficient (Gd(n 0))
Lin, Jeng-Hsiang (Autor:in)
31.12.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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