基于多道瞬态瑞雷波法的公路路基压实度检测研究  

Research on Highway Subgrade Compaction Degree Detection Based on Multi-channel Transient Rayleigh Wave Method

作　　者：蒋王鹏 Jiang Wangpeng(JSIT,Nanjing 210019,China)

机构地区：[1]苏交科集团股份有限公司,南京210019

出　　处：《黑龙江科学》2025年第4期137-140,共4页Heilongjiang Science

摘　　要：由于现有的检测技术散频曲线均匀性低,拟合效果差,故研究基于多道瞬态瑞雷波法的公路路基压实度检测,按照设定的参数和测点布置计算测点瑞雷波频散,通过多道探测器提取出与频率相关的相速度信息,绘制瑞雷散频曲线,根据频散曲线分析路基的压实度和结构特征。测试结果表明,路基压实度95%散频曲线的起伏程度明显变得平缓,这表明路基的均匀性得到了大幅度提升。粉砂路基刚度与压实土层厚度之间呈现出较好的相关性,相关系数均在0.97以上,具有较强的关联性,说明拟合过程在描述粉砂路基刚度与压实土层厚度关系时具有更高的准确性,展现出了良好的检测效果。Due to the low uniformity and poor fitting effect of the existing detection technology,the study detects the compactness of highway subgrade with multi-channel transient Rayleigh wave method.Then the study calculates Rayleigh wave dispersion of measuring points according to the set parameters and measuring point arrangement,extracts the phase velocity information related to frequency by multi-channel detector,draws the Rayleigh dispersion curve,and analyzes the compactness and structural characteristics of subgrade according to the dispersion curve.The test results show that the fluctuation degree of 95%dispersion curve of subgrade compaction degree becomes smooth obviously,which indicates that the uniformity of subgrade has been greatly improved.There is good correlation between silt subgrade stiffness and compacted soil layer thickness,and the correlation coefficients are all above 0.97,showing strong correlation.This indicates that the fitting process has higher accuracy in describing the relationship between silt subgrade stiffness and compacted soil layer thickness,and shows good detection effect.

关 键 词：多道瞬态 瑞雷波法 公路 路基 压实度 

分 类 号：TU441[建筑科学—岩土工程]