You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 45, Issue 1 (January 2017)

    Special Issue Paper

    Using Continuous Wavelet Transform to Construct the Dispersion Image for Soil Layers

    (Received 23 February 2016; accepted 2 August 2016)

    Published Online: 2017

    CODEN: JTEVAB

      Format Pages Price  
    PDF (3.8M) 9 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    This study used a time-frequency domain analysis for estimating the dispersion curve of a Rayleigh wave by using two receivers. The signals were first transformed using continuous wavelet transform. A similar slant stack procedure was used to analyze the wavelet transform signals and extract a dispersion image. This method is advantageous because it requires no empirical judgment in phase unwrapping and few receivers. To examine the applicability of the method for evaluating the dispersion curve for soil layers with lateral heterogeneity, three synthetic examples and an experience example were investigated. In these examples, numerical simulations of the surface wave seismic test were performed using the finite difference FLAC code. The results revealed that the estimates of the surface wave dispersion curve, obtained using the method, coincide with those of the theoretical values. A high-resolution dispersion image is generated by increasing the spacing of receivers. The method is applicable for extracting a dispersion image for lateral heterogeneous soil layers.


    Author Information:

    Tsai, P.-H.
    Dept. of Construction Engineering, Chaoyang Univ. of Technology, Taichung City,

    Feng, Z.-Y.
    Dept. of Soil and Water Conservation, National Chung Hsing Univ., Taichung City,

    Ni, S.-H.
    Dept. of Civil Engineering, National Cheng Kung Univ., Tainan City,


    Stock #: JTE20160100

    ISSN:0090-3973

    DOI: 10.1520/JTE20160100

    Author
    Title Using Continuous Wavelet Transform to Construct the Dispersion Image for Soil Layers
    Symposium ,
    Committee D18