DYNAMIC TRAFFIC LOADING OF PAVEMENTS
Application of a technique for mathematical simulation of the interaction of heavy highway vehicles with a defined road surface profile is described. The simulation technique is used to develop a practical methodology for summarizing the dynamic vehicular loading experience of a highway pavement under mixed traffic. The design of a traffic survey instrumentation system which automatically records all vehicular characteristics needed for the simulation and summarization processes is presented. The traffic data recording system and the summary processes were utilized in a field experiment conducted near Georgetown, Texas, over a 20-month period. The summary technique was used to estimate the magnitude and location of dynamic tire forces that were exerted on designated test sections of a pavement by vehicles crossing small bumps (3/4 inch high) on the surface of an otherwise smooth roadway. Dynaflect measurements and optical level surveys were used to monitor the condition of the pavement in the test sections. The dynamic wheel loading resulted in slightly larger pavement deflections after some 25,000 truck passes than comparable wheel loads on an adjacent smooth surface. /FHWA/
- This project was sponsored by the Texas Highway Department.
University of Texas, AustinCenter for Highway Research, 200 West 21st Street
Austin, TX United States 78712
- Machemehl, R
- Lee, C E
- Publication Date: 1974-12
- Pagination: 78 p.
- TRT Terms: Axle loads; Deflection; Dynaflect; Dynamic loads; Field tests; Heavy vehicles; Instrumentation; Mathematical models; Pavements; Rolling contact; Simulation; Test sections; Traffic loads; Traffic volume; Trucks
- Uncontrolled Terms: Bumps
- Old TRIS Terms: Pavement deflection; Truck pavement damage
- Subject Areas: Freight Transportation; Highways; Motor Carriers; Operations and Traffic Management; Pavements;
- Accession Number: 00126486
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: Final Rpt.
- Contract Numbers: Res Study 3-8-71-160
- Files: TRIS, USDOT
- Created Date: Dec 16 1975 12:00AM