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MECHANISTIC REAPPRAISAL OF THE CURRENT DESIGN METHODOLOGY FOR RIGID AIRFIELD PAVEMENTS.
| 题名： | MECHANISTIC REAPPRAISAL OF THE CURRENT DESIGN METHODOLOGY FOR RIGID AIRFIELD PAVEMENTS. |
| 作者： | Lee-Y-H |
| 关键词： | AIRPORT-RUNWAYS; BOEING-777-AIRCRAFT; CUMULATIVE-DAMAGE-FACTOR; DESIGN-METHODS; LAYERED-ELASTIC-DESIGN; MECHANISTIC-DESIGN; PAVEMENT-DESIGN; RIGID-PAVEMENTS; STRUCTURAL-DETERIORATION-AND-DEFECTS |
| 摘要： | The current design methodology for rigid airfield pavements, based on the plate theory approach, was reevaluated in an attempt to accommodate the new Boeing B-777 airplanes. The differences between the conventional Federal Aviation Administration (FAA) design method and the newly developed Layered Elastic Design-FAA design methodology are investigated. The original concept of pass-to-coverage ratio is reevaluated. The prediction models developed are used for the estimation of critical edge stresses for design. The problems and difficulties of the conventional method, especially in the conversion of different aircraft types, are identified. The concept of cumulative damage factor should be used to account for the combined damages of different aircraft types and departures. Structural deterioration relationships are compared and tentative modification alternatives are explored. Consequently, the concept of an equivalent stress factor is introduced and an alternative structural deterioration model is proposed for trial design applications. Further investigations and verifications should be conducted as well. |
| 总页数： | Transportation Research Record. 1999. (1684) pp90-100 (4 Fig., 4 Tab., 23 Ref.) |
| 报告类型： | 科技报告 |
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