首页|Bi-linear strength envelope of coarse- and fine-grained unsaturated soils with bimodal water-retention curve

Bi-linear strength envelope of coarse- and fine-grained unsaturated soils with bimodal water-retention curve

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  • NSTL
  • Elsevier
? 2022 Elsevier B.V.Many engineering practices are carried out within the unsaturated soil. Soil-water retention curves (SWRCs) of many soils exhibit bimodal characteristics that significantly affect strength behavior, this issue still remains unresolved. This work employs suction stress concept to examine the uniqueness of strength parameters for coarse- and fine-grained unsaturated soils with bimodal SWRCs. Capillary degree of saturation is used to upscale pore-scale suction to macroscopic suction stress. In the suction stress-shear strength plane, both coarse- and fine-grained soils display the bi-linear strength envelope, differing from unsaturated soils with unimodal SWRC.

BimodalShear strengthSoil-water retention curveSuction stressUnsaturated soils

Lin Z.、Qian J.、Shi Z.、Zhai Q.

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Department of Geotechnical Engineering Tongji University

Key Laboratory for RC and PRC Structures of the Ministry of Education Southeast University

2022

10.1016/j.enggeo.2022.106694

Engineering Geology

Engineering Geology

EISCI
ISSN：0013-7952
年,卷(期)：2022.304
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