Abstract
The spectral analysis of surface wave (SASW) method is a non-destructive testing technique base on the Rayleigh wave dispersion that has been advanced in this study for the evaluation of the material properties of the soil subgrade structure in irregular profile, i.e. pavement system. The Rayleigh wave is generated by transient impact sources and then the wave motion is processed using the spectrum analyzer to obtain the amplitude spectrum of vertical displacement in the frequency domain. The objective of this study is to describe the procedure of the SASW method for determining the frequency-independent attenuation, a0 and the geometric damping ratio, D of the soil structure. Both parameters are useful for dynamic geotechnical structural design. A frequency-independent attenuation empirical coefficient (a 0) of the Bornitz equation was obtained from the auto power spectrum produced by the spectrum analyzer. Subsequently the damping ratio (D) was able to be calculated using the attenuation coefficient parameter from the Bornitz model. The damping ratio obtained by the Bornitz model was similar to the values calculated using Spectral Ratio and Transfer Function model. Good agreement was also found between the values obtained in this study compared to that of other researchers.
| Original language | English |
|---|---|
| Title of host publication | 12th International Conference on Computer Methods and Advances in Geomechanics 2008 |
| Pages | 2658-2670 |
| Number of pages | 13 |
| Volume | 4 |
| Publication status | Published - 2008 |
| Event | 12th International Conference on Computer Methods and Advances in Geomechanics 2008 - Goa Duration: 1 Oct 2008 → 6 Oct 2008 |
Other
| Other | 12th International Conference on Computer Methods and Advances in Geomechanics 2008 |
|---|---|
| City | Goa |
| Period | 1/10/08 → 6/10/08 |
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Keywords
- Frequency-independent attenuation
- Geometric damping
- SASW method
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Applied Mathematics
Cite this
Determination of attenuation and geometric damping on clayey sand residual soil in irregular profile using surface wave method. / Rosyidi, S. A.; Taha, Mohd. Raihan; Chik, Z.; Ismail, Amiruddin.
12th International Conference on Computer Methods and Advances in Geomechanics 2008. Vol. 4 2008. p. 2658-2670.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Determination of attenuation and geometric damping on clayey sand residual soil in irregular profile using surface wave method
AU - Rosyidi, S. A.
AU - Taha, Mohd. Raihan
AU - Chik, Z.
AU - Ismail, Amiruddin
PY - 2008
Y1 - 2008
N2 - The spectral analysis of surface wave (SASW) method is a non-destructive testing technique base on the Rayleigh wave dispersion that has been advanced in this study for the evaluation of the material properties of the soil subgrade structure in irregular profile, i.e. pavement system. The Rayleigh wave is generated by transient impact sources and then the wave motion is processed using the spectrum analyzer to obtain the amplitude spectrum of vertical displacement in the frequency domain. The objective of this study is to describe the procedure of the SASW method for determining the frequency-independent attenuation, a0 and the geometric damping ratio, D of the soil structure. Both parameters are useful for dynamic geotechnical structural design. A frequency-independent attenuation empirical coefficient (a 0) of the Bornitz equation was obtained from the auto power spectrum produced by the spectrum analyzer. Subsequently the damping ratio (D) was able to be calculated using the attenuation coefficient parameter from the Bornitz model. The damping ratio obtained by the Bornitz model was similar to the values calculated using Spectral Ratio and Transfer Function model. Good agreement was also found between the values obtained in this study compared to that of other researchers.
AB - The spectral analysis of surface wave (SASW) method is a non-destructive testing technique base on the Rayleigh wave dispersion that has been advanced in this study for the evaluation of the material properties of the soil subgrade structure in irregular profile, i.e. pavement system. The Rayleigh wave is generated by transient impact sources and then the wave motion is processed using the spectrum analyzer to obtain the amplitude spectrum of vertical displacement in the frequency domain. The objective of this study is to describe the procedure of the SASW method for determining the frequency-independent attenuation, a0 and the geometric damping ratio, D of the soil structure. Both parameters are useful for dynamic geotechnical structural design. A frequency-independent attenuation empirical coefficient (a 0) of the Bornitz equation was obtained from the auto power spectrum produced by the spectrum analyzer. Subsequently the damping ratio (D) was able to be calculated using the attenuation coefficient parameter from the Bornitz model. The damping ratio obtained by the Bornitz model was similar to the values calculated using Spectral Ratio and Transfer Function model. Good agreement was also found between the values obtained in this study compared to that of other researchers.
KW - Frequency-independent attenuation
KW - Geometric damping
KW - SASW method
UR - http://www.scopus.com/inward/record.url?scp=84869814168&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84869814168&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84869814168
SN - 9781622761760
VL - 4
SP - 2658
EP - 2670
BT - 12th International Conference on Computer Methods and Advances in Geomechanics 2008
ER -