摘要
高速公路结构层铺设为水平分层填筑,铺设的材质复杂,不同结构层之间介电特性不一样,使得结构层的介电常数估计困难,病害定位不准确。为解决此问题,提出一种基于CRIM模型的高速公路结构层介电常数估计方法。该方法通过常用的Brown模型、Looyenga模型以及CRIM模型对高速公路结构层介电常数进行估计分析,说明了CRIM模型对高速公路层状铺设材质的适用性;同时利用已有配比模型的分析有效验证了公路不同铺设结构层具有不同的介电常数值。试验结果表明,相比于传统选取单一经验介电常数值估计层深度的方法,所提出方法能够有效估计高速公路结构层不同层间的介电常数,尤其在潮湿的含水结构层中,提出方法对面层、基层介电常数的估计值误差比采用固定经验值计算的误差分别减少了39.77%与72.38%。
The expressway structural layer is horizontally stratified and laid with complex paving materials,and the dielectric properties are different between each structural layer,resulting in difficulties in estimating the dielectric constant of the structural layer and inaccurate location of diseases.To solve this problem,an estimation method of the dielectric constant of highway structural layers based on CRIM model is proposed.It can estimate and analyze the dielectric constant of highway structural layers with the commonly used Brown model,Looyenga model,and CRIM model,demonstrating the applicability of CRIM model to highway-stratified paving materials.The existing proportioning model analysis effectively verified that different highway structural layers have different dielectric constant values.The results showed that compared with the traditional method of selecting a single empirical dielectric constant value to estimate the layer depth,the proposed method could effectively estimate the dielectric constants between different highway structural layers.Especially in the wet aquifer,the error in the estimated values of the dielectric constant of the surface and base layers using the proposed method was reduced by 39.77%and 72.38%,respectively,compared with the error in the fixed empirical calculation method.
作者
周丽军
王国忠
ZHOU Lijun;WANG Guozhong(Shanxi Intelligent Transportation Research Institute Co.,Ltd.,Taiyuan,Shanxi 030032,China;Shanxi Transportation Construction Engineering Quality Detection Center(Co.,Ltd.).Taiyuan,Shanxi 030006,China)
出处
《山西交通科技》
2024年第5期48-53,共6页
Shanxi Science & Technology of Transportation
基金
山西省基础研究计划资助项目(202303021211340)
山西交通科学研究院集团有限公司创新发展计划揭榜项目(21-JKCF-55)
山西交通科学研究院集团有限公司创新发展计划项目(23-JKCF-03)。
