What are the mechanisms behind the formation of wall effects in gravel columns?
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The mechanisms behind the formation of wall effects in gravel columns primarily involve two key factors: permeability and stiffness. Gravel columns have high permeability, allowing for enhanced dissipation of excess pore water pressure, while their stiffness reduces additional stress in the soil, consequently lowering excess pore water pressure and improving soil bearing capacity . Additionally, the construction methods for gravel columns, such as using casing augers with gravel charging paths or soil improvement systems, play a crucial role in consolidating the soil and forming stable columns . Furthermore, the reinforcement effects of gravel columns, including densification of soil, water drainage, and stress focusing, contribute significantly to their effectiveness in foundation engineering . These combined mechanisms result in the successful formation of stable and efficient gravel columns for various construction projects .
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| The water-permeable gravity type retaining wall structure with embedded gravel columns utilizes a drainage system to quickly drain water, preventing soil sliding and ensuring stability. | |
Open access•Journal Article 1 Citations | The mechanisms behind wall effects in gravel columns include densifying soil, draining water, liquefying in advance, and reinforcing soil, enhancing liquefaction resistance in foundation engineering. |
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01 Feb 2021 | Not addressed in the paper. |
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