Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Layer Coefficient Ratio for Reinforced Pavements and the Influence of Pavement Thickness and Subgrade Strength
Flexible pavement with geosynthetic reinforcement in the base course layer is typically designed using empirical techniques. The empiricism is developed from the construction of pavement test sections similar in cross section and materials to the expected design and observation of the improvement in pavement performance due to the reinforcement. Modified structural layer coefficients for the reinforced base course layer, expressed within the context of the AASHTO 1993 Pavement Design Guide, are sometimes used to express the improvements observed from these tests. However, design approaches based on these test results are often extended beyond the range of empirical evidence and often do not account for the influence of subgrade strength and overall thickness of the pavement cross section on structural improvement. Several mechanistic-empirical models for analysis and design of reinforced flexible pavements have recently been reported, which allow a thorough evaluation and confirmation of these postulated improved design values. One of these methods is used to analytically generate benefit values for a range of pavement design conditions. In this paper, the steps involved in this approach are presented. The results show the importance of the strength of the subgrade and the thickness of the proposed pavement cross section on the layer coefficient ratio.
Layer Coefficient Ratio for Reinforced Pavements and the Influence of Pavement Thickness and Subgrade Strength
Flexible pavement with geosynthetic reinforcement in the base course layer is typically designed using empirical techniques. The empiricism is developed from the construction of pavement test sections similar in cross section and materials to the expected design and observation of the improvement in pavement performance due to the reinforcement. Modified structural layer coefficients for the reinforced base course layer, expressed within the context of the AASHTO 1993 Pavement Design Guide, are sometimes used to express the improvements observed from these tests. However, design approaches based on these test results are often extended beyond the range of empirical evidence and often do not account for the influence of subgrade strength and overall thickness of the pavement cross section on structural improvement. Several mechanistic-empirical models for analysis and design of reinforced flexible pavements have recently been reported, which allow a thorough evaluation and confirmation of these postulated improved design values. One of these methods is used to analytically generate benefit values for a range of pavement design conditions. In this paper, the steps involved in this approach are presented. The results show the importance of the strength of the subgrade and the thickness of the proposed pavement cross section on the layer coefficient ratio.
Layer Coefficient Ratio for Reinforced Pavements and the Influence of Pavement Thickness and Subgrade Strength
Perkins, S.W. (Autor:in) / Christopher, B.R. (Autor:in) / Klompmaker, J. (Autor:in)
2013
7 Seiten, Bilder, Tabellen, Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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