| 洞庭湖区软土水泥搅拌桩复合地基沉降控制效果数值分析 |
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| 引用本文： | 付登博,谢继登,王中恩,贾阳磊,李攀.洞庭湖区软土水泥搅拌桩复合地基沉降控制效果数值分析[J].路基工程,2021,0(4):104-109. |
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| 作者姓名： | 付登博 谢继登 王中恩 贾阳磊 李攀 |
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| 作者单位： | 1.中国建筑第五工程局有限公司，长沙 410000 |
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| 摘 要： | 为分析洞庭湖区新建南益高速公路软土水泥搅拌桩复合地基各因素对工后沉降影响水平，运用ABAQUS有限元软件建立水泥搅拌桩复合地基数值模型，对其运营期工后沉降控制效果进行分析。结果表明:洞庭湖区软基工后沉降随桩间距的减小、桩长的增大、桩径的增大而减小，其中桩间距对软基工后沉降的影响水平最高，桩径对软基工后沉降的影响水平最低；建议水泥搅拌桩处治软土地基时，采用短而密的布桩方式以更好地控制软基工后沉降。
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| 关 键 词： | 湖相软土 软基沉降 水泥搅拌桩 数值模拟 影响因素 |
| 收稿时间： | 2020-11-30 |
Numerical Analysis of Settlement Control Effect of Composite Foundation with Soft Soil and Cement Mixing Pile in Dongting Lake Area |
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| Abstract: | In order to analyze the influence level of various factors on post-construction settlement of the composite foundation of soft soil cement mixing pile of the newly-built Nanyi highway in Dongting Lake area, a numerical model of the composite foundation of cement mixing pile has been established by the finite element software ABAQUS to analyze the control effect of post-construction settlement during its operation period. The results show that the post-construction settlement of soft foundation in Dongting Lake area decreases with the decrease of pile spacing, increase of pile length and pile diameter. In which the influence level of pile spacing on post-construction settlement of soft foundation is the highest, while the influence level of pile diameter is the lowest. It is recommended to use short and dense piles to better control the post-construction settlement of the soft foundation when treating soft soil foundation with cement mixing piles. |
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