Research on Deformations of Peaty Soil and Silt Based on High-Pressure Consolidation Tests

TANG Zhenjie; RUAN Yongfen; ZHOU Yuanhai; PAN Jiqiang; HUAI Yigao; LI Penghui

doi:10.3724/j.gyjzG23060806

Volume 55 Issue 4

Apr. 2025

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(4): 148-153

TANG Zhenjie, RUAN Yongfen, ZHOU Yuanhai, PAN Jiqiang, HUAI Yigao, LI Penghui. Research on Deformations of Peaty Soil and Silt Based on High-Pressure Consolidation Tests[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(4): 148-153. doi: 10.3724/j.gyjzG23060806

Citation:

TANG Zhenjie, RUAN Yongfen, ZHOU Yuanhai, PAN Jiqiang, HUAI Yigao, LI Penghui. Research on Deformations of Peaty Soil and Silt Based on High-Pressure Consolidation Tests[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(4): 148-153. doi: 10.3724/j.gyjzG23060806

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Research on Deformations of Peaty Soil and Silt Based on High-Pressure Consolidation Tests

doi: 10.3724/j.gyjzG23060806

1. Faculty of Architecture and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2. Yunnan Yintuo Survey and Design Co., Ltd., Qujing 655000, China;
3. Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co., Ltd., Kunming 650051, China;
4. Yunnan Provincial Institute of Highway Science and Technology, Kunming 650051, China

Received Date: 2023-06-08
Available Online: 2025-06-07
Publish Date: 2025-04-01

Abstract

Abstract

The method of calculating foundation settlement by the secant modulus method is becoming familiar to scholars for its unique advantages， but a large number of studies have found that the calculation results are small when using this method for foundation settlement calculation. This is because the traditional secant modulus method treats the relation between vertical stress and vertical strain in the lateral limit compression test as hyperbolic and ignores the reference configuration， which limits the applicability of the method and affects the calculation accuracy. The stress-strain curves of Kunming peaty soil and silt were fitted with various functions by conducting a large number of high-pressure consolidation tests. The test results showed that the stress-strain curves of Kunming peaty soil and silt in lateral limit conditions could be better characterized by Gunary’s model than the assumption of the hyperbolic model， and the foundation deformation equation considering the overburden load and burial depth change was established based on the improved the secant modulus method with the introduction of correction factor γ. It is found that the relation between secant moduli and burial depth varied greatly for different soils， among which the relation between secant moduli and burial depth of peaty soil was in accordance with ExpDec1 expression.
- road engineering,
- settlement calculation,
- secant modulus method,
- peaty soil,
- silt,
- Gunary’s model

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References(20)

References

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