A Mechanistic Approach to Pavement Design for Nome Airport

by Ted S. Vinson, Oregon State Univ, Corvallis, United States,
James R. Rooney, Oregon State Univ, Corvallis, United States,



Document Type: Proceeding Paper

Part of: Cold Regions Engineering

Abstract:

The analysis of performance and design of the pavement structure for the North-South runway at Nome Airport is based on the mechanistic approach. In the mechanistic approach, calculated strains at critical locations in the pavement structural section are limited to acceptable levels for a specified number of load repetitions (i.e., the design life). Knowledge of stress and strains under design loading conditions at critical locations in a pavement structure allows an estimate of design life to be made or the structural adequacy of the pavement to be assessed. Based on the results obtained in the study, the following conclusions are appropriate: (1) A structural section of three in. of AC overlaying nine in. of CBC will perform satisfactorily over the design-life of the runway, (2) the structural performance of the pavement is not appreciably improved by increasing the thickness of AC from three to four in., (3) the structural performance of the pavement is appreciably improved by a six-in. CTB layer beneath the three in. of AC.

Subject Headings: Pavement design | Airport and airfield pavements | Structural design | Stress strain relations | Strain | Load and resistance factor design | Foundation design | Alaska | United States

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