τ-ρ Algorithm in the Application of Rayleigh Wave Monitoring

Jun Qiao1, Naying Li2, Fangyong Li3, Tianhan Li1

1School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing, 400074, CHINA

2School of Civil Engineering English, Chongqing Jiaotong University, Chongqing, 400074, CHINA

3School of Enterprise Management, Chongqing Jiaotong University, Chongqing, 400074, CHINA

Abstract: Rayleigh wave exploration has advantages of high efficiency, low cost and easy practice, and it is applied broadly in engineering. This article, combined with highway detection, study how to make use of

conversion to abstract Rayleigh wave, and according to the Rayleigh wave data, it can invert out the sub grade compaction. From the comparison between sub grade compaction and core compaction, it is noted that τ- ρ conversion was good to solve the problem of Rayleigh wave separation, and τ- ρ conversion can advance the detection precision and longitudinal and lateral resolution of Transient Rayleigh Wave Method.

Keywords: Rayleigh wave; τ-ρ conversion; Sub grade compaction