Cone penetration test (CPT)-based stratigraphic profiling using the wavelet transform modulus maxima method-Reference-Cited by-同舟云学术

Cone penetration test (CPT)-based stratigraphic profiling using the wavelet transform modulus maxima method

Published:2015-12 Issue:12 Volume:52 Page:1993-2007
ISSN:0008-3674
Container-title:Canadian Geotechnical Journal
language:en
Short-container-title:Can. Geotech. J.

Author:

Ching Jianye¹,Wang Jiun-Shiang¹,Juang C. Hsein²,Ku Chih-Sheng³

Affiliation:

1. Department of Civil Engineering, National Taiwan University, Taipei, Taiwan.

2. Glenn Department of Civil Engineering, Clemson University, SC, USA.

3. Department of Civil Engineering, I-Shou University, Kaohsiung, Taiwan.

Abstract

In this paper, a stratigraphic profiling approach is proposed based on the soil behavior type index, Ic, obtained from the cone penetration test (CPT). The basic idea of this approach is simple: the layer boundaries can be identified as the points at which a change occurs in the Ic profile. It is shown that these change points can be easily identified using the wavelet transform modulus maxima (WTMM) method. This method is able to accurately pinpoint the locations of change points in the Ic profile and to produce graphs and plots that fit well with engineers’ methods of visualization and intuition. Moreover, by virtue of the fast Fourier transform, the computation is very fast. Case studies show that the WTMM method is effective for the detection of change points in the Ic profile. It is also capable of detecting thin soil layers.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

Link

http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2015-0027

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