| CFG桩与管桩处理深厚淤泥层的适用性研究 |
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| 引用本文： | 罗军,李建国.CFG桩与管桩处理深厚淤泥层的适用性研究[J].路基工程,2023,0(2):136-141. |
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| 作者姓名： | 罗军 李建国 |
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| 作者单位： | 1.中铁二院华东勘察设计有限责任公司，杭州 310000 |
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| 摘 要： | 某高铁车站分布有深厚淤泥及淤泥质砂，具有含水量高、孔隙比大及强度低的特点，处理规模巨大，不仅要控制路基工后沉降，而且要消除砂土液化。采用CFG桩联合预应力管桩的加固方案，但试桩表明，CFG桩在深厚淤泥中的成桩质量不佳，遂将CFG桩变更为预应力管桩。预应力管桩现场试桩及沉降监测表明，成桩质量良好，处理后地基承载力和沉降均满足设计要求。
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| 关 键 词： | 深厚淤泥层 复合地基处理 CFG桩 预应力管桩 适用性 |
| 收稿时间： | 2022-10-31 |
Research on Applicability of Deep Silt Layer Treatment with CFG Pile and Pipe Pile |
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| Abstract: | A high-speed railway station has thick silt and muddy sand with high water content, large void ratio and low strength. The treatment scale is huge, It is not only necessary to control the post construction settlement of the subgrade, but also to eliminate sand liquefaction. CFG pile combined with prestressed pipe pile is adopted. However, the test pile shows that CFG pile in deep silt is in insufficient quality, thus, CFG pile is changed to prestressed pipe pile. The field test and settlement monitoring show that the pile is in good quality, and the bearing capacity and settlement of the treated foundation meet the design requirements. |
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