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单词 International Roughness Index
释义

International Roughness Index

中文百科

国际糙度指标

国际糙度指标(International Roughness Index,缩写IRI),是依据「从纵剖面测量计算道路国际粗糙度指数的标准操作规程」(ASTM E 1926-98)创建的标准,常用于测量道路平坦度的指标。当IRI为0表示该剖面非常平坦。一般认为数值超过8m/Km就属于行驶困难、或需减速的坏路。

英语百科

International Roughness Index 国际糙度指标

The International Roughness Index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of slope (in/mi, m/km, etc.). Since its introduction in 1986, IRI has become the road roughness index most commonly used worldwide for evaluating and managing road systems.

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更新时间:2025/6/20 22:13:29