Resonant column tests on maximum shear modulus and damping ratio of coral sand

LI Xiao-mei; WANG Fang; HAN Lin; GUAN Yun-fei; ZHAN Xin-jie

doi:10.11779/CJGE2020S1012

Volume 42 Issue S1

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Chinese Journal of Geotechnical Engineering > 2020 > 42(S1): 60-64. > DOI: 10.11779/CJGE2020S1012

LI Xiao-mei, WANG Fang, HAN Lin, GUAN Yun-fei, ZHAN Xin-jie. Resonant column tests on maximum shear modulus and damping ratio of coral sand[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S1): 60-64. DOI: 10.11779/CJGE2020S1012

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Resonant column tests on maximum shear modulus and damping ratio of coral sand

1.
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China
2.
College of Mechanics and Materials, Hohai University, Nanjing 211100, China

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Received Date: June 03, 2020
Available Online: December 07, 2022

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Abstract

Abstract

The resonant column tests on the effects of relative density and confining pressure on the maximum modulus and damping ratio of coral sand in South China Sea under small strain are performed. The test results show that, for the samples with the same relative density, the maximum shear modulus of coral sand increases with the increasing confining pressure, while the damping ratio decreases with the increasing confining pressure. For the samples under the same condition of confining pressure, the maximum shear modulus of coral sand increases with the increasing relative density, while the damping ratio decreases with the increasing relative density. Based on the test data, the variation rules of the maximum shear modulus and damping ratio of coral sands considering confining pressure and relative density are established, which can provide the basic data and technical support for infrastructure construction in the coral sand areas of South China Sea.
- coral sand,
- relative density,
- confining pressure,
- maximum shear modulus,
- damping ratio

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