| 深层搅拌桩复合地基沉降计算理论研究 |
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| 引用本文： | 施建勇,邹坚.深层搅拌桩复合地基沉降计算理论研究[J].岩土力学,2002,23(3):309-315,320. |
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| 作者姓名： | 施建勇 邹坚 |
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| 作者单位： | 河海大学岩土工程研究所,江苏,南京,210098 |
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| 基金项目： | 教育部优秀青年教师教学和科研奖励基金资助 |
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| 摘 要： | 为了寻找深层搅拌桩复合地基沉降计算的简便方法，根据已有的研究成果，进行了桩与桩周土间摩擦力分布规律的假设和简化，运用单位元法推导了深层搅拌桩复合地基沉降计算公式和设计用曲线，同时采用轴对称有限元法，对一实际工程的实测成果进行了分析。计算结果表明：文中理论计算的中级荷载下的沉降量值介于分层总和法与有限元法计算值之间，但文中方法比有限元计算法简单，比分层总和法更合理。
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| 关 键 词： | 复合地基 沉降 单位元法 有限元法 分层总和法 |
| 文章编号： | 1000-7598-(2002)03-0309-08 |
Study on calculative theory of settlement of composite ground reinforced by deep-mixing pile group |
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| SHI Jian-yong,ZOU Jian.Study on calculative theory of settlement of composite ground reinforced by deep-mixing pile group[J].Rock and Soil Mechanics,2002,23(3):309-315,320. |
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| Authors: | SHI Jian-yong ZOU Jian |
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| Abstract: | In order to seek a simple theoretical approach to predict the settlement of composite ground reinforced by deep-mixing pile group,assumptions and simplifications of the distribution behavior of skin friction between the pile and the surrounding soil were made based on previous researches.Then a calculation formula and curves of practical data for settlement of the composite ground were derived with the application of unit cell method(UCM).The field test data of a project were analyzed by axi symmetric FEM.It is shown that the calculated value of layer-wise summation method(LSM),the proposed method and FEM are all larger than field test value under each grade of load;and the proposed solution is between that of LSM(high)and FEM(low).Thus,the method proposed is simpler than FEM and more rational than LSM. |
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| Keywords: | composite ground settlement unit cell method(UCM) finite element method(FEM) layer-wise summation method(LSM) |
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