机场沥青路面结构无损评价的实施

Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1 Pub Date : 2021-12-20 DOI:10.1201/9781003078814-48

Y. Hachiya, Y. Tsubokawa, O. Takahashi

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引用次数: 0

摘要

摘要建立了一套基于落重偏转仪的机场沥青路面无损结构评价系统。该方法包括估算每层的弹性模量，计算设计荷载下的应变，并将结果与应变准则进行比较。接下来，估计允许的负载重复次数，最后确定任何所需覆盖层的厚度。为了便于现场计算，提出了一种基于FWD最大挠度的简化方法。在实际应用中考虑了路基性质校正和剩余寿命估算。该评价体系已多次用于机场沥青路面的实际结构评价。实验结果验证了该方法的有效性。相关摘要见ITRD E118503。

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Implementation of Nondestructive Structural Evaluation for Airport Asphalt Pavements

A nondestructive structural evaluation system was developed for evaluating airport asphalt pavements by using a Falling Weight Deflectometer (FWD). The method includes estimating the modulus of elasticity for each layer, calculating the strains for the design load, and then comparing the results to the strain criteria. Next, an allowable number of load repetitions is estimated, and finally the thickness of any required overlay is determined. A simplified method was developed that is based on the FWD maximum deflection because of its convenience for in situ evaluations. Subgrade property corrections and residual life estimation were considered for practical applications. This evaluation system was used for many actual structural evaluations of airport asphalt pavements. The results verified the validity of this method. For the covering abstract see ITRD E118503.

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Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1

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