高速公路沥青路面运营早期抗滑性复测指标竣工评定标准

Evaluation Standard for Early Operation Anti-Skidding Retest Index of Expressway Asphalt Pavement Completion

我国竣工验收复测工作一般在交工验收后2~3年内进行,在此期间的运营过程中,沥青路面抗滑指标在车辆荷载和环境因素等的影响下将发生较大变化,仍采用与交工验收相同的评定标准不能科学、客观和公正地评价沥青路面抗滑性能。以此为切入点,调研获取了江西省11条典型高速公路沥青路面历年横向力系数检测数据,对数据进行预处理和统计分析,并考虑横向力系数交工检测值、开通运营时间和年累计交通量3个变量,利用多变量线性回归方法构建了江西省高速公路沥青路面抗滑性能衰变模型。在此基础上,以交工验收标准为初始值,分别以2年和3年为竣工验收时间点,推荐了不同交通量场景下的沥青路面抗滑性竣工复测指标标准值,以期为高速公路竣(交)工验收工作提供理论基础储备和支持。

The completion acceptance inspection of highway projects in China is generally conducted within 2 to 3 years after the initial acceptance.During the operation process,the skid resistance index of the asphalt pavement will undergo significant changes due to vehicle loads and environmental conditions.Using the same evaluation standards as the initial acceptance cannot scientifically,objectively,and fairly assess the skid resistance performance of the asphalt pavement.Taking this as the starting point,a survey is conducted in the paper to obtain Sideway Force Coefficient(SFC)data from 1l typical expressways with asphalt pavements in Jiangxi Province over the years.The data is pre-processed and statistically analyzed,considering three variables:the SFC at the initial acceptance,the time of operation,and the cumulative traffic volume.A multivariate linear regression method is used to establish a degradation model for the skid resistance performance of asphalt pavements on expressways in Jiangxi Province.Based on this,with the initial acceptance standard as the baseline,different skid resistance retesting standard values are recommended at 2 and 3 years after initial acceptance under various traffic volume scenarios,with expectations to provide a theoretical basis and support for the completion and acceptance work of expressways.