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DEM Simulation Study of Strength Parameters of Stone Column Composite Foundations Under High Stress
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Jing HOU1, Yi-cheng JIANG2, 3, Hua-chao HAN1, Jian ZHOU2, 3
Water Resources and Power | 2023, 41(5) : 130 - 134
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Water Resources and Power | 2023, 41(5): 130-134
• WATER CONSERVANCY AND HYDROPOWER ENGINEERING •
DEM Simulation Study of Strength Parameters of Stone Column Composite Foundations Under High Stress
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Jing HOU1, Yi-cheng JIANG2, 3, Hua-chao HAN1, Jian ZHOU2, 3
Affiliations
  • 1.PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
  • 2.Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310012, China
  • 3.Zhejiang Urban Underground Space Development Engineering Technology Research Center, Zhejiang University, Hangzhou 310058, China
Published: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221398
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In stone column composite foundations, the Priebe parameter composite method is commonly used to calculate the equivalent shear strength. Most of the existing studies are based on low stresses in conventional embankments, but few studies have been carried out on the applicability of this method under high stresses. This study focuses on the foundation treatment project for a clay core rock fill dam in Rwanda. The stress-strain behavior, micro-failure mechanism and equivalent shear strength of composite specimens with different area replacement ratio were investigated by simulating large-scale triaxle tests with discrete element numerical methods and compared with the widely used parametric composite method. The results show that the stress-strain characteristics of stone column composite foundations at high stresses differ from those at low stresses, and show a strain hardening trend. Composite specimens show a significant non-linear trend in strength at high stresses. The shear strength parameters calculated by the parameter composite method overestimate the strength of composite foundations, and it is recommended that they be discounted in engineering applications.

stone column  /  ground treatment  /  high stress condition  /  parametric composite method  /  discrete element model
Jing HOU, Yi-cheng JIANG, Hua-chao HAN, Jian ZHOU. DEM Simulation Study of Strength Parameters of Stone Column Composite Foundations Under High Stress[J]. Water Resources and Power, 2023 , 41 (5) : 130 -134 . DOI: 10.20040/j.cnki.1000-7709.2023.20221398
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221398
  • Receive Date：2022-07-10
  • Online Date：2026-01-28
  • Published：2023-05-25
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History
  • Received：2022-07-10
  • Revised：2022-08-21
Affiliations
    1.PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
    2.Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310012, China
    3.Zhejiang Urban Underground Space Development Engineering Technology Research Center, Zhejiang University, Hangzhou 310058, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20221398
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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