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RELIABILITY DESIGN OF FLEXIBLE AIRFIELD PAVEMENTS: ELASTIC LAYERED METHOD.
| 题名： | RELIABILITY DESIGN OF FLEXIBLE AIRFIELD PAVEMENTS: ELASTIC LAYERED METHOD. |
| 作者： | Chou-YT |
| 关键词： | AIRPORT-PAVEMENTS; FLEXIBLE-PAVEMENT-DESIGN; RELIABILITY-; PROBABILITY-; ELASTIC-LAYERED-METHOD; COMPUTER-PROGRAMS; STRAIN-DISTRIBUTION; DECISION-MAKING; PAVEMENT-THICKNESS |
| 摘要： | A design procedure was developed for layered elastic flexible airfield pavement systems in terms of probability and reliability. A user-friendly computer program, RELIFLEX, was prepared to carry out the computations. The Rosenblueth method is used to estimate the expected value and variance of the computed strains (dependent parameters) on the basis of the input mean values of independent parameters (i.e., aircraft load, layer thicknesses, and material moduli). RELIFLEX has the capability of considering the strain distribution to be normal, lognormal, or beta, and a capacity-demand analysis is included. Only normal distribution is presented. Environmental effects and the lack of fit of the prediction models are not considered in RELIFLEX. The relationships between the reliability level and the allowable strain repetition of the designed system, established using RELIFLEX, provide a decision-making tool for engineers to design pavement at the desired reliability level. For a desired reliability level of the design system, pavement thickness can be varied to agree with the designed coverage or the allowable coverage can be modified for a given pavement thickness. |
| 总页数： | Transportation Research Record. 1997. (1568) pp124-130 (5 Fig., 10 Ref.) |
| 报告类型： | 科技报告 |
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