期刊论文

中文

公路交通科技

1002-0268

2016

33

4

39-45,65

10.3969/j.issn.1002-0268.2016.04.007

本校为第一机构

为准确有效地评定水泥混凝土路面的脱空状况,通过对现场贝克曼梁(BB) 、落锤弯沉仪(FWD) 、路面雷达(GPR)和钻芯取样检测结果的分析和计算,并充分参考梅观高速路面的实际情况,提出了以板角弯沉、横缝中点弯沉和接缝传荷系数3个指标作为水泥混凝土路面脱空的判断标准。研究表明:据此评判标准与方法判定的脱空状况与钻芯取样结果基本一致,对板底脱空情况判断的准确率高达86.7%,对脱空等级判断的准确率达到80%,说明该评定方法具有较高的准确度与可靠性,能够满足水泥混凝土路面板底脱空判别与评价的需要。

In order to assess the void beneath cement concrete pavement slab accurately and effectively, through analyzing and calculating the test findings discovered by on-site Benkelman beam ( BB ) , falling weight deflectometer ( FWD) , ground penetrating radar ( GPR) and core-drilling sample, and considering the real pavement condition of Meiguan expressway, it is put forward that slab corner deflection, transverse joint midpoint deflection and joint load-transfer coefficient are verified to be the judgment criterion for void beneath cement concrete pavement slab. The result shows that the void cond...