Analysis the Relationship between Pavement Smoothness Indices

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概要

• 論文の詳細を見る

• Although the inertial profiler has been introduced for decades, most of the highway agencies in Taiwan still adopt the 3-M straightedge as the main device for pavement roughness measurements. Through the Long Term Pavement Performance database, 5280 profile data were selected in this study for analyzing the relationship between international roughness index (IRI) and standard deviator (σ). The natural logarithm transformation was applied to both variables before a linear regression model was developed with R2 of 0.9368. However, it is found that the current smoothness acceptance specification (σ= 2.4 mm) used by Taiwan Freeway and Expressway system is equivalent to an IRI value of 2.97 m/km that is not rigorous enough while compared with that of other countries. It is recommended to modify the specification from 2.4mm to 1.1 mm that will perform an equivalent level of the IRI-based specification suggested by Federal Highway Administration.

著者

• CHOU Chia-Pei

  Department of Civil Engineering National Taiwan University

• TSAI Chen-Yu

  Department of Civil Engineering National Taiwan University

• CHEN Ai-Chin

  Department of Logistics and Shipping Management, Kainan University

• CHANG Li-Wei

  Department of Civil Engineering National Taiwan University

関連論文

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• Analysis the Relationship between Pavement Smoothness Indices
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