CPT-Based estimation of undrained shear strength of fine-grained soils in the Huanghe River Delta

Zhongnian Yang Xuesen Liu Lei Guo Yuxue Cui Xiuting Su Chao Jia Xianzhang Ling

Zhongnian Yang, Xuesen Liu, Lei Guo, Yuxue Cui, Xiuting Su, Chao Jia, Xianzhang Ling. CPT-Based estimation of undrained shear strength of fine-grained soils in the Huanghe River Delta[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-021-1946-4
Citation: Zhongnian Yang, Xuesen Liu, Lei Guo, Yuxue Cui, Xiuting Su, Chao Jia, Xianzhang Ling. CPT-Based estimation of undrained shear strength of fine-grained soils in the Huanghe River Delta[J]. Acta Oceanologica Sinica. doi: 10.1007/s13131-021-1946-4

doi: 10.1007/s13131-021-1946-4

CPT-Based estimation of undrained shear strength of fine-grained soils in the Huanghe River Delta

Funds: The National Natural Science Foundation of China under contract No. 42177153, U2006213 and 41806075; the Shandong Province Focused Research and Development Program under contract No. 2019GHY112075; the National Major Scientific Research Instrument Development Project under contract No. 41627801.
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  • Figure  1.  Shoal study area location and station distribution.

    Figure  2.  Shoal CPT results.

    Figure  3.  Shoal grading curve.

    Figure  4.  Soil layer undrained shear strength calculations.

    Figure  5.  Undrained shear strength fitted model of S1 (a), S2 (b) and S4 (c) based on CPT.

    Figure  6.  Undrained shear strength of different soil layers.

    Figure  7.  Residual distribution of undrained shear strength and silt content.

    Figure  8.  Calculation and CPT cone coefficient.

    Figure  9.  Calculation and CPT cone tip coefficient.

    Table  1.   Cohesions and internal friction angles at shoal measuring points

    S1S2S3S4
    Depth/m c/kPa $\varphi $/(°) Depth/m c/kPa $\varphi $/(°) Depth/m c/kPa $\varphi $/(°) Depth/m c/kPa $\varphi $/(°)
    0.5–0.7 0.5–0.7 0.5–0.7 33.2 2.1–2.3 15.0 30.3
    1.5–1.7 13.0 27.3 2.5–3.0 11.0 33.2 1.75–1.95 94.0 19.7 3.0–3.5 6.0 31.1
    3.0–3.5 28.3 3.5–4.0 10.0 32.5 2.5–3.0 35.0 28.6 4.0-4.5 9.0 34.6
    4.1–4.6 24.0 10.2 4.8–5.3 4.0–4.5 12.0 35.3 5.0–5.5 8.0 26.2
    5.2–5.7 11.0 19.7 5.9–6.4 10.0 33.5 5.5–6.0 8.0 13.3 6.0–6.5 1.0 38.3
    6.2–6.7 14.0 12.3 7.6–8.1 14.0 32.9 6.8–7.0 6.0 29.8 7.0–7.5 17.0 14.4
    7.2–7.7 20.0 6.6 8.7–9.2 1.0 35.7 7.5–8.0 14.0 34.2 8.0–8.5 19.0 10.2
    8.2–8.7 40.0 6.8 10.1–10.6 1.0 27.7 9.5–10.0 42.4 9.0–9.5 11.0 35.1
    9.2–9.7 22.0 11.9 11.5–12.0 18.0 25.8 10.5–11.0 3.0 26.7 10.3–10.5 19.0 13.5
    10.4–10.6 32.0 20.0 12.5–13.0 4.0 26.8 11.5–12.0 20.0 31.2 11.3–11.5 12.0 23.1
    11.4–11.6 35.0 13.3 13.1–13.3 8.0 32.0 12.0–12.5 133.0 19.5 12.3–12.5 22.0 14.7
    12.4–12.6 13.5–13.7 13.3–13.5 11.0 12.3 13.0–13.5 120.0 30.8
    13.4–13.6 12.0 16.4 15.0–15.2 25.0 17.7 14.3–14.5 18.0 9.2 14.3–14.5 55.0 31.6
    14.1–14.6 30.0 11.9 15.5–15.7 14.8–15.0 9.0 11.5 14.8–15.0 6.0 23.5
    15.1–15.6 5.0 19.9 16.0–16.2 21.0 9.8 16.3–16.5 8.0 16.9 15.8–16.0 29.0 26.2
    16.4–16.6 16.8–17.0 16.8–17.0 17.8–18.0 28.0 27.3
    17.4–17.6 9.0 26.0 19.0–19.2 13.0 19.5 18.8–19.0 27.0 16.0 19.3–19.8 3.0 29.5
    18.4–18.6 19.5–19.7 19.3–19.5 20.3–20.8 9.0 30.0
    Note: “–” represents no data.
    下载: 导出CSV

    Table  2.   Average cone coefficient value (Nk) calculated at different measuring points

    Station Maximum of Nk Average of Nk
    S1 80 22.04
    S2 128 24.12
    S3 210 20.25
    S4 105 25.29
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-05-13
  • 录用日期:  2021-07-26
  • 网络出版日期:  2022-03-29

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