基于可拓方法的连续配筋混凝土路面裂缝宽度评价

在简述可拓评判方法的基本原理和评价步骤的基础上,根据京珠高速湖南段耒宜高速公路CRCP 3个路段的裂缝宽度检测结果,进行了用可拓方法评价CRCP裂缝宽度的研究,确定了相应的评价步骤,并将其评价结果与统计方法进行了对比分析,从而提出了运用可拓方法评价CRCP裂缝宽度的方法。结果表明,可拓方法不仅能合理评价裂缝宽度的现时状况,而且其关联度可以反映裂缝宽度等级的动态发展趋势;而统计方法的评价结果受个别较宽裂缝的影响较大,且为静态结果,只能反映CRCP裂缝宽度的现时状况。因此,可拓方法比统计方法更可靠、更准确,更能满足CRCP裂缝宽度检测的要求,从而为CRCP路面养护维修提供参考依据。

Evaluation of crack width of continuously reinforced concrete pavement based on extension method

The paper is based on the introduction of the basic principles and the evaluating steps about the extension method.According to the testing results of crack width in 3 highway sections of Leiyi Expressway in Hunan section of Jingzhu Expressway,the evaluation of CRCP crack width is studied with the extension method and the evaluating steps are determined.The evaluating results of extension method are compared to those of statistical method.Thus,a new method is put forward to evaluate the CRCP crack width with the extension method.The results show that the extension method not only evaluates reasonably the present conditions of crack width,but also its relevance degree can reflect the dynamic development trend of the grade of CRCP crack width.However,the evaluating results of statistical method are the static results reflecting the present conditions of CRCP crack width,and influenced remarkably by the individual wider cracks.Therefore,the extension method is more reliable and accurate than the statistical method,and it can satisty the request of CRCP testing more.It provids an important reference basis for the CRCP maintenance.