Small-Scale Static Load Model Study of Pavement Stresses Resulting from C-141 and C-5A Aircraft Loadings.
Abstract
The small-scale static load model study was made to evaluate the use of theoretical developments describing the behavior of concrete pavement under load as a basis for the rigid pavement design charts for C-141 and C-5A aircraft. An evaluation of this nature was needed because the overall length of the landing gear of the C-5A aircraft is as great as the length or width of individual pavement slabs. An examination of the effects of the C-141 loading on slab behavior was made at the same time for comparative purposes. The evaluations were based on gear loads expressed as a percent of single wheel loads producing equal maximum stress. Natural rubber was used to simulate the subgrade supporting full-scale pavement. Static loads were applied to the model slabs through elliptical footprints arranged to simulate the four-wheeled gear of the C-141 aircraft and the twelve-wheeled gear of the C-5A aircraft and through single elliptical footprints simulating one wheel of each gear. Strains resulting from the static loads at, and parallel to, the edge of the slab were observed by means of foil electrical strain gages. Included in the report is a description of the model, the construction and instrumentation of the slabs, and the testing procedures. The data obtained from the tests are presented with an analysis and discussion of the test results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1969
- Accession Number
- AD0859283
Entities
People
- R. M. Behrmann
Organizations
- Air Force Research Laboratory