Undrained monotonic and cyclic shear behaviors of gas-bearing sand

SUN Miaojun; SHI Zhouhuan; ZHOU Bohan; PAN Kun

doi:10.11779/CJGE2023S20023

Volume 45 Issue S2

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Chinese Journal of Geotechnical Engineering > 2023 > 45(S2): 165-170. > DOI: 10.11779/CJGE2023S20023

SUN Miaojun, SHI Zhouhuan, ZHOU Bohan, PAN Kun. Undrained monotonic and cyclic shear behaviors of gas-bearing sand[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S2): 165-170. DOI: 10.11779/CJGE2023S20023

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Undrained monotonic and cyclic shear behaviors of gas-bearing sand

1.
POWERCHINA Huadong Engineering Corporation Limited, Hangzhou 311122, China
2.
College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China

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Received Date: November 29, 2023
Available Online: April 19, 2024

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Abstract

Abstract

A series of undrained monotonic and cyclic triaxial tests are carried out to compare the shear behaviors of the gas-bearing and saturated sand under varying consolidation conditions. The results show that under the normal consolidation conditions, the shear strength of the gas-bearing sand increases with the gas content, exhibiting a more significant dilatancy characteristic and strain-hardening tendency, and its critical state stress ratio is higher than that of the saturated sand. For the over-consolidated sand, its shear strength decreases with the gas content. It indicates that the presence of gas weakens the increasing trend of soil strength with the over-consolidation ratio. In the meanwhile, the cyclic shear resistance of the gas-bearing sand decreases with the increasing over-consolidation ratio.
- gas-bearing sand,
- undrained condition,
- monotonic shear,
- cyclic loading,
- over consolidation

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References (16)

References

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