Dynamic Response of Airfield Pavement to Large Magnitude Loads.
Abstract
The evaluation of rapidly repaired bomb damaged runways requires determining the dynamic response of pavement due to large dynamic loads. This report recommends using one of the sophisticated computer codes currently available for a conventional static analysis of airfield pavements, but with the use of appropriate dynamic material properties to predict the dynamic response of pavement. In order to select the appropriate dynamic material properties, the stress variation as a function of time is developed for pavements subjected to moving wheel loads. A review of the literature indicates that the elastic properties and fatigue strength of Portland Cement Concrete are relatively the same for dynamic as for static loading, The dynamic response of asphalt concrete, granular base and subbase material, and subgrade soil, however, is significantly improved relative to the response of these materials to static loads. Further, the dynamic behavior of granular material is time-independent, but for asphalt concrete and subgrade soils, especially cohesive soils, the dynamic properties vary with aircraft velocity (i.e., rate and duration of loading). Recommendations for further research in this area are also given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1980
- Accession Number
- ADA098796
Entities
People
- Gerald A. Woelfl