Evaluation method for shaking-induced volumetric strain for gravelly soils and validation by centrifuge model tests

XIA Peng; ZHOU Yanguo; LIU Kai; CHEN Yunmin

doi:10.11779/CJGE2024S10051

Volume 46 Issue S1

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Chinese Journal of Geotechnical Engineering > 2024 > 46(S1): 207-211. > DOI: 10.11779/CJGE2024S10051

XIA Peng, ZHOU Yanguo, LIU Kai, CHEN Yunmin. Evaluation method for shaking-induced volumetric strain for gravelly soils and validation by centrifuge model tests[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 207-211. DOI: 10.11779/CJGE2024S10051

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Evaluation method for shaking-induced volumetric strain for gravelly soils and validation by centrifuge model tests

XIA Peng^{1, 2,},
ZHOU Yanguo^1, ,,
LIU Kai^{1, 3},
CHEN Yunmin¹

1.
MOE Key Laboratory of Soft Soil and Geoenvironmental Engineering, Institute of Geotechnical Engineering, Center for Hypergravity Experiment and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
2.
Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210024, China
3.
China State Construction Silkroad Construction Investment Group Co., LTD, Xi'an 710000, China

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Received Date: April 28, 2024

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Abstract

Abstract

Liquefactions of gravelly soils are widely distributed in the 2008 Wenchuan earthquake. Field investigations show that the existing settlement evaluation methods for sands are not applicable to the gravelly soils due to the gravel content effects. It is aimed to develop the evaluation method for shaking-induced volumetric strain for the gravelly soils with consideration of gravel content, which is based on the so-called "Zhang-Shamoto" model. The dynamic triaxial tests are conducted to parameterize the evaluation method, and three centrifuge model tests on the gravelly soil grounds with typical gravel contents are carried out to check the performance of the proposed evaluation method. The test results show that the higher the gravel content, the smaller the shaking-induced settlement. The proposed evaluation method can accurately predict the shaking-induced settlement for recently deposited gravelly soils, but shows a conservative prediction performance in cases with pre-shaking effects, which suggests the need to further improve the proposed evaluation method by considering the pre-shaking effects.
- gravelly soil,
- dynamic triaxial test,
- shaking-induced volumetric strain,
- settlement,
- centrifuge shaking table,
- model test

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References (7)

References

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