Abstract
Shear wave velocity is an important parameter for the design of geotechnical systems, particularly in seismically active areas. The availability of a reliable method for measuring shear wave velocity in centrifuge soil models is necessary in order to fully characterize the soil. The paper describes enhanced bender elements system developed at Rensselaer Polytechnic Institute. The fabrication process of bender elements in the laboratory is described in this paper. Also, the estimation of the shear wave velocity using the first arrival method is explained along with a study of near field presence in the results. To confirm the validity of the system, four centrifuge experiments were conducted on dry and saturated Ottawa F#55 sand. A comparison is performed between dry and saturated soil having the same relative density. Also, the effect of the direction of polarization of the shear wave is studied in the paper. The results are then compared to theoretical values estimated based on the literature and are found to match reasonably well; thus confirming the accuracy of the new system.
| Original language | English (US) |
|---|---|
| Journal | Geotechnical Testing Journal |
| Volume | 37 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 2014 |
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Keywords
- Bender elements
- Centrifuge modeling
- Shear wave velocity
- Soil dynamics
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
Cite this
Shear wave velocity measurement in the centrifuge using bender elements. / El-Sekelly, Waleed; Tessari, Anthony; Abdoun, Tarek.
In: Geotechnical Testing Journal, Vol. 37, No. 4, 01.01.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Shear wave velocity measurement in the centrifuge using bender elements
AU - El-Sekelly, Waleed
AU - Tessari, Anthony
AU - Abdoun, Tarek
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Shear wave velocity is an important parameter for the design of geotechnical systems, particularly in seismically active areas. The availability of a reliable method for measuring shear wave velocity in centrifuge soil models is necessary in order to fully characterize the soil. The paper describes enhanced bender elements system developed at Rensselaer Polytechnic Institute. The fabrication process of bender elements in the laboratory is described in this paper. Also, the estimation of the shear wave velocity using the first arrival method is explained along with a study of near field presence in the results. To confirm the validity of the system, four centrifuge experiments were conducted on dry and saturated Ottawa F#55 sand. A comparison is performed between dry and saturated soil having the same relative density. Also, the effect of the direction of polarization of the shear wave is studied in the paper. The results are then compared to theoretical values estimated based on the literature and are found to match reasonably well; thus confirming the accuracy of the new system.
AB - Shear wave velocity is an important parameter for the design of geotechnical systems, particularly in seismically active areas. The availability of a reliable method for measuring shear wave velocity in centrifuge soil models is necessary in order to fully characterize the soil. The paper describes enhanced bender elements system developed at Rensselaer Polytechnic Institute. The fabrication process of bender elements in the laboratory is described in this paper. Also, the estimation of the shear wave velocity using the first arrival method is explained along with a study of near field presence in the results. To confirm the validity of the system, four centrifuge experiments were conducted on dry and saturated Ottawa F#55 sand. A comparison is performed between dry and saturated soil having the same relative density. Also, the effect of the direction of polarization of the shear wave is studied in the paper. The results are then compared to theoretical values estimated based on the literature and are found to match reasonably well; thus confirming the accuracy of the new system.
KW - Bender elements
KW - Centrifuge modeling
KW - Shear wave velocity
KW - Soil dynamics
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U2 - 10.1520/GTJ20130189
DO - 10.1520/GTJ20130189
M3 - Article
VL - 37
JO - Geotechnical Testing Journal
JF - Geotechnical Testing Journal
SN - 0149-6115
IS - 4
ER -