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Derivation of pay adjustment for in-place air void of asphalt pavement from life-cycle cost analysis

机译：从生命周期成本分析推导沥青路面原位气隙的薪酬调整

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摘要

The objective of this study is to develop performance-related pay adjustment (PA) for in-place air void of asphalt pavements using pavement management data and life-cycle cost analysis (LCCA). In-place air void data were collected from quality assurance (QA) records for a large number of projects constructed in New Jersey from 1995 to 2005. Pavement condition index data were extracted from pavement management database for the pavement sections where air void data were available. Empirical pavement performance models were developed with sigmoidal functions and used to predict pavement service life. An exponential model form was used to relate the expected pavement service life to the quality measures of in-place air voids. After the rationality of the model was checked, LCCA was performed to derive the PA using different analysis periods and maintenance strategies. Monte Carlo simulations were conducted to capture the variation of PA due to the uncertainty of overlay service life. The PA could be significantly affected by the maintenance strategy if it is estimated using the short analysis period with single overlay, while the PA calculated using the infinite analysis period provides a conservative boundary that is not sensitive to the maintenance strategy. The developed LCCA framework provides the flexibility of determining the PA based on state agencies' practice on QA and pavement maintenance.
机译：这项研究的目的是使用路面管理数据和生命周期成本分析（LCCA）为沥青路面的现场空隙开发性能相关的薪酬调整（PA）。从1995年至2005年在新泽西州建设的许多项目的质量保证（QA）记录中收集就位气隙数据。从可获得气隙数据的人行道的路面管理数据库中提取路面状况指数数据。用S形函数开发了经验性路面性能模型，并用于预测路面使用寿命。使用指数模型形式将预期路面使用寿命与就地气隙的质量度量联系起来。在检查了模型的合理性之后，使用不同的分析周期和维护策略执行了LCCA来得出PA。进行了蒙特卡洛模拟，以捕获由于覆盖寿命不确定性而产生的功率放大器的变化。如果使用带有单个覆盖的短分析周期来估算，则PA可能会受到维护策略的严重影响，而使用无限分析周期计算出的PA会提供一个对维护策略不敏感的保守边界。发达的LCCA框架提供了根据州机构在质量保证和路面维护方面的实践确定PA的灵活性。

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