路基压实过程振动信号去噪方法比选及效果验证  

Denoising Method Comparison and Effect Verification of Subgrade Compaction Signal

作　　者：王文德[1] 

机构地区：[1]北京建达道桥咨询有限公司,北京100015

出　　处：《交通科技》2016年第4期67-69,共3页Transportation Science & Technology

摘　　要：针对路基压实过程中振动压路机振动轮信号存在各种噪声干扰,结合高铁路基现场压实振动信号,引入傅里叶去噪方法和小波去噪法进行压实信号去噪。结果表明,小波去噪相较傅里叶去噪具有更高的能量比,能更好地保留压实信号的信息。在此基础上,将原始信号和小波去噪后信号的特征值分别与传统压实指标Evd进行相关性校验,结果显示小波去噪后的信号能更好地反映土体压实状态,证实了小波分析在路基压实信号去噪中具有很高的可靠性。There are many kinds of noise existing in vibratory compactor acceleration signal during compaction process;hence,wavelet denoising and Fourier denoising were introduced to denoise the compaction signal based on the real project.The wavelet denoising methodology was determined as the optimal analysis method through the actual case.Based on the correlation between the eigenvalue of vibration signal and traditional compaction indicator,the signal after wavelet denoising was more suitable to reflect the compaction condition of soil and the advantage of wavelet denoising in the compaction signal treatment was verified.

关 键 词：路基 压实信号 小波去噪 傅里叶去噪 相关性校验 

分 类 号：TN911.7[电子电信—通信与信息系统]