Estimating Liquefaction Potential if a 200,000-Year Old Sand Deposit Near Georgetown, South Carolina
Location
San Diego, California
Presentation Date
26 May 2010, 4:45 pm - 6:45 pm
Abstract
A geotechnical experimentation site is being developed near Georgetown, South Carolina, to study the effect of soil age on liquefaction resistance. The site is located in an area called Hobcaw Barony on a 200,000-year-old beach to barrier-island sand deposit. Initial investigations conducted at the site include seismic cone penetration tests with pore pressure measurements, standard penetration tests with energy measurements, seismic crosshole tests, dilatometer testing, and fixed-piston sampling. Shear-wave velocities calculated from seismic cone test results are based on the true-interval method. The near-surface sand deposit extends from the ground surface to a depth of 8.5 m. The groundwater table is located at a depth of 2.4 m. Measured shear-wave velocities from the near-surface sand deposit are, on average, 47% higher than velocities of 10 year-old sand deposits with similar penetration resistances. The sand deposit at the Hobcaw Barony site is found to be susceptible to liquefaction, but ground shaking levels during the 1886 Charleston earthquake were not sufficient to cause liquefaction. This finding supports the observation that no surface manifestations of liquefaction occurred in the area.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Geiger, Aaron J.; Boller, Ronald C.; Andrus, Ronald D.; Heidari, Tahereh; Hayati, Hossein; and Camp, William M. III, "Estimating Liquefaction Potential if a 200,000-Year Old Sand Deposit Near Georgetown, South Carolina" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 14.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session01/14
Included in
Estimating Liquefaction Potential if a 200,000-Year Old Sand Deposit Near Georgetown, South Carolina
San Diego, California
A geotechnical experimentation site is being developed near Georgetown, South Carolina, to study the effect of soil age on liquefaction resistance. The site is located in an area called Hobcaw Barony on a 200,000-year-old beach to barrier-island sand deposit. Initial investigations conducted at the site include seismic cone penetration tests with pore pressure measurements, standard penetration tests with energy measurements, seismic crosshole tests, dilatometer testing, and fixed-piston sampling. Shear-wave velocities calculated from seismic cone test results are based on the true-interval method. The near-surface sand deposit extends from the ground surface to a depth of 8.5 m. The groundwater table is located at a depth of 2.4 m. Measured shear-wave velocities from the near-surface sand deposit are, on average, 47% higher than velocities of 10 year-old sand deposits with similar penetration resistances. The sand deposit at the Hobcaw Barony site is found to be susceptible to liquefaction, but ground shaking levels during the 1886 Charleston earthquake were not sufficient to cause liquefaction. This finding supports the observation that no surface manifestations of liquefaction occurred in the area.
