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ASTM E1926-2008 从纵剖面测量计算道路国际粗糙度指数的标准实施规程

ASTM E1926-2008 从纵剖面测量计算道路国际粗糙度指数的标准实施规程

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【英文标准名称】: Standard Practice for Computing International Roughness Index of Roads from Longitudinal Profile Measurements
【原文标准名称】: 从纵剖面测量计算道路国际粗糙度指数的标准实施规程
【标准号】: ASTM E1926-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: E17.33
【标准类型】: (Practice)
【标准水平】: ()
【中文主题词】:
【英文主题词】: highway performance monitoring system; HPMS; international roughness index; International Roughness Index; longitudinal profile; pavement management systems; pavement roughness; PMS; Highway performance monitoring system (HPMS); International Roughness In
【摘要】: This practice provides a means for obtaining a quantitative estimate of a pavement property defined as roughness using longitudinal profile measuring equipment. The IRI is portable in that it can be obtained from longitudinal profiles obtained with a variety of instruments. The IRI is stable with time because true IRI is based on the concept of a true longitudinal profile, rather than the physical properties of a particular type of instrument. Roughness information is a useful input to the pavement management systems (PMS) maintained by transportation agencies. The IRI for the right wheel track is the measurement of road surface roughness specified by the Federal Highway Administration (FHWA) as the input to their Highway Performance Monitoring System (HPMS). When profiles are measured simultaneously for both traveled wheel tracks, then the MRI is considered to be a better measure of road surface roughness than the IRI for either wheel track. Note 18212;The MRI scale is identical to the IRI scale. IRI can be interpreted as the output of an idealized response-type measuring system (see Test Method E 1082 and Specification E 1215), where the physical vehicle and instrumentation are replaced with a mathematical model. The units of slope correspond to accumulated suspension motions (for example, metres), divided by the distance traveled (for example, kilometres). IRI is a useful calibration reference for response-type systems that estimate roughness by measuring vehicular response (see Test Method E 1082 and Specification E 1215). IRI can also be interpreted as average absolute slope of the profile, filtered mathematically to modify the amplitudes associated with different wavelengths (3).1.1 This practice covers the mathematical processing of longitudinal profile measurements to produce a road roughness statistic called the International Roughness Index (IRI). 1.2 The intent is to provide a standard practice for computing and reporting an estimate of road roughness for highway pavements. 1.3 This practice is based on an algorithm developed in The International Road Roughness Experiment sponsored by a number of institutions including the World Bank and reported in two World Bank Technical Papers (1, 2). Additional technical information is provided in two Transportation Research Board (TRB) papers (3, 4). 1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
【中国标准分类号】: P66
【国际标准分类号】: 93_080_99
【页数】: 16P.;A4
【正文语种】: 英语

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ASTM[1] E1926-[1]

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