摘要
为了调查江苏省各种路面养护措施的费用-效益,对路面管理系统的养护历史资料、交通轴载信息、路面性能的数据进行观察和分析.与增长模型、线性模型、对数模型和指数模型相比,立方模型具有更高的回归精度,能够捕捉路面性能衰退曲线,因此采用立方模型来模拟路面车辙的发展.计算效益费用比来定量评价路面养护措施的费用-效益.研究结果表明,在中、低交通条件下,热拌沥青薄层罩面和微表处比其他养护措施的费用-效益更大;在重、特重交通高速公路上,热再生和厚热沥青罩面具有更长的使用寿命和更大的费用-效益.
To investigate the cost-effectiveness of different maintenance treatments of highways in Jiangsu Province, the historical pavement maintenance records, traffic load information and pavement performance data in the pavement management system （PMS） are recorded and analyzed. Compared with the growth model, the linear model, the logarithm model and the exponential model, the cubic model has higher regression accuracy R2 and it can capture the sigmoid shape of the deterioration curve. So it is selected to simulate the pavement rotting development. The benefit over cost ratio is calculated to quantify the treatment cost- effectiveness. The analysis results show that thin hot mix asphalt （HMA） overlays and micro surfacing are more cost- effective than the. other two treatments on light and moderate traffic roads. Hot in-place recycling and thick HMA overlays have much longer service lives and greater cost-effectiveness under heavy or extra heavy traffic.
基金
The Science and Technology Project of Jiangsu Provincial Communications Department(No.7621000078)
关键词
沥青路面
养护措施
累计当量单轴荷载
立方模型
费用-效益
asphalt pavement
maintenance treatment
cumulative equivalent single axle loads
cubic model
cost-effectiveness
