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归纳总结了预防性养护的概念,简单介绍了现有的9种预防性养护措施,确定了预防性养护措施选择的原则。结合宁波市绕城高速公路的检测结果,以及预防性路段划分方法,确定出沿线主要预防性路段的类别为A类和B类,再结合沿线交通情况计算不同预防性养护措施的等效年度费用效益EAC,最后利用项目级评判法,得出对于A类路段,微表处为最佳预防性养护措施;对B类路段,薄层罩面为最佳预防性养护措施。
Summarized the concept of preventive maintenance, briefly introduced the existing nine kinds of preventive maintenance measures, and identified the principle of preventive maintenance measures. Combined with the test results of Ningbo Ring Expressway and the method of preventive section classification, the categories of main preventive sections along the line are identified as Class A and Class B, and the equivalent annual costs of different preventive maintenance measures are calculated with traffic conditions along the line Benefit EAC. Finally, using item-level judgment, it is concluded that micro-surfacing is the best precautionary conservation measure for Class A sections and the best preventive maintenance measure for Class B sections and thin-layer coverings.