| 基于统一强度理论的灰土挤密桩应力分析 |
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| 引用本文： | 曹黎娟,赵均海,魏雪英.基于统一强度理论的灰土挤密桩应力分析[J].岩土力学,2006,27(10):1786-1790. |
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| 作者姓名： | 曹黎娟 赵均海 魏雪英 |
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| 作者单位： | 长安大学,建筑工程学院,西安,710061 |
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| 基金项目： | 高等学校博士学科点专项科研项目;陕西省自然科学基金 |
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| 摘 要： | 采用统一强度理论对灰土挤密桩应力进行研究，分析了灰土挤密桩挤密成孔过程及土体处于弹塑性状态时孔周应力情况，得出了灰土挤密桩成孔过程的弹性解及孔壁屈服时的弹性极限荷载，并求出了孔壁均布内压与塑性挤密半径的关系式。该解考虑了中间主应力及拉压性能差异的影响，Mohr-Coulomb解是特例。其结果对于全面研究灰土挤密桩的综合作用效用，进一步节约材料有一定的参考价值。
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| 关 键 词： | 统一强度理论 灰土挤密桩 平面应变 塑性挤密半径 |
| 文章编号： | 1000-7598-（2006）10-1786-05 |
| 收稿时间： | 2005-01-05 |
| 修稿时间： | 2005-01-052005-06-06 |
Stress analysis of lime-soil compacted pile based on the unified strength theory |
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| CAO Li-juan,ZHAO Jun-hai,WEI Xue-ying.Stress analysis of lime-soil compacted pile based on the unified strength theory[J].Rock and Soil Mechanics,2006,27(10):1786-1790. |
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| Authors: | CAO Li-juan ZHAO Jun-hai WEI Xue-ying |
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| Institution: | School of Civil Engineering, Chang'an University, Xi'an 710061, China |
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| Abstract: | The stresses of lime-soil compacted pile are analyzed based on the unified strength theory. The stress of the soil around the hole in the compaction and hole formation process of lime-soil compacted pile is discussed. The elastic solution and elastic limit load are obtained during the hole formation for lime-soil compacted pile; and the relationship between the pressure on the hole wall and the plastic radius is also obtained. This solution considered the intermediate principal stress effect and the strength difference effect in tension and compression. Mohr-Coulomb solution is a special example of this solution obtained. The obtained results have practical value for comprehensively studying the function of the lime-soil compacted piles. |
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| Keywords: | unified strength theory lime-soil compacted pile plane strain plastic compacted radius |
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