Transcription of 路面のIRI（国際ラフネス指数）を測定する 各種測 …
1 56-10(2014) 56 IRI 1 1 MCI Maintenance Control Index MCI 1986 IRI International Roughness Index 1) 25 2 2) IRI IRI IRI IRI 2 IRI 1),3) IRI IRI The comparison of the precision of IRI (International Roughness Index) measured by various IRI measurement methods QC -1 80km/h 50mph 3) m/km mm/m IRI IRI -1 4 1 IRI -1 IRI 3)
2 IRI 1 250mm QC IRI 2 QC IRI 3 RTRRMS RTRRMS IRI 4 IRI -1 QC( 4) 56-10(2014) 57 2 1 IRI IRI 3 IRI 4 IRI IRI IRI IRI -2 IRI 4m/km 4m/km 80 100km/h IRI ) IRI -2 1 2 4 NEXCO 2 3 3 1 2 IRI 1 10% H22 2 1 230m 230m 100m 4 -3 1 2 2 1 2 2 1 -2 IRI IRI 25 2 IRI ( )
3 25 2 NEXCO IRI IRI NEXCO NEXCO H25 7 -3 -2 IRI 1),3) 56-10(2014) 58 IRI 2 RoadRuf ProVAL; Transtec Group 1 250mm 2 10m 10mm 2 10m 250mm 2 80m 30km/h 50mm -1 3 -4 IRI IRI
4 -3 250mm -2 IRI -2 NEXCO -1 1 -2 2 -3 2 -4 56-10(2014) 59 B IRI A IRI IRI -5 (X2 X1) X1 100 X2 IRI (m/km) X1 IRI (m/km) IRI A 10mm (250mm) IRI -6 IRI 250mm 4 IRI 4 IRI 2 IRI IRI 1 Sayers et al.
5 Guidelines for Conducting and Calibrating Road Roughness Measurements, World Bank Technical Paper Number 46, 1986 2 25 2 3 ( ) 1 19 6 4 Gillespie Everything You Always Wanted to Know about the IRI, But Were Afraid to Ask!, Road Profile Users Group Meeting, 5) 25 7 -3 IRI IRI(m/km) 1 2 A B ( ) Kazuhiko ANDO ( ) Tomoaki KURMOCHI -6 IRI (A ) -5 (IRI)(N=4)
