Accession Number : AD0708178

Title :   AIRCRAFT DYNAMIC WHEEL LOAD EFFECTS ON AIRPORT PAVEMENTS.

Descriptive Note : Final rept. May 69-May 70,

Corporate Author : LOCKHEED-CALIFORNIA CO BURBANK

Personal Author(s) : Wignot,J. E. ; Durup,P. C. ; Wittlin,G. ; Scott,R. B. ; Gamon,M. A.

Report Date : MAY 1970

Pagination or Media Count : 432

Abstract : A study has been performed which concludes that airplane dynamic wheel loads have significant effects on portions of airport pavements. The program included scaled pavement tests, analyses to determine airplane imposed loads on pavement and pavement response, correlation between empirical data and analyses and a literature review. The results of the investigation indicate that the two distinguishable effects that influence the stress the pavement experiences are airplane induced loads and moving load phenomenon. For a given level of runway unevenness the loads that will be imposed on the pavement can be accurately defined for various ground operations performed. However, the pavement response to a moving load can vary substantially depending upon the kinds of materials and types of construction used. To obtain proper assessment of moving load effects, full scale pavement tests are considered necessary to provide needed data. Two test plans are presented. One approach involves 'Operational Statistical Tests' and depends upon a heavy statistical sample of data. The alternate approach involves 'Moving Load Track Tests' and provides data for point-by-point correlation using analytical data under carefully controlled conditions and configurations. (Author)

Descriptors :   (*RUNWAYS, TAXIING), (*PAVEMENTS, LOADS(FORCES)), SOIL MECHANICS, VISCOELASTICITY, POWER SPECTRA, AIRCRAFT TIRES, CONCRETE, INTERFACES, IMPACT TESTS, TEST METHODS

Subject Categories : Terminal Flight Facilities
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE