| 陈轮,蒋力,王海燕.DX桩抗拔位移的弹性理论解析解[J].计算力学学报,2006,23(3):381~384 |
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| DX桩抗拔位移的弹性理论解析解 |
| Analytical solution for the load-displacement relationship of pullout DX pile based on elastic theory |
| 修订日期：2004-04-08 |
| DOI：10.7511/jslx20063072 |
| 中文关键词: DX桩 抗拔桩 位移 弹性理论 |
| 英文关键词:DX pile,pullout pile,displacement,elastic theory |
| 基金项目: |
| 陈轮 蒋力 王海燕 |
| 清华大学水利水电工程系,北京100084 |
| 摘要点击次数: 1471 |
| 全文下载次数: 8 |
| 中文摘要: |
| 基于可反映桩基荷载传递性状的“套叠”式桩周土变形模式和弹性理论，将等直径部分和扩径体部分桩周土分段建立位移方程，推导了桩身带有扩径体的非刚性和刚性DX抗拔桩的荷载-位移关系的解析解。该解析解可反映桩的变形以及桩周土模量随深度变化等因素的影响．且计算较为简便。通过有限元数值模拟对计算模式可能引起的误差进行分析以及DX抗拔桩现场载荷试验结果的验证，表明本文给出的解析解可较好地反映DX抗拔桩在工作状态下的荷载-位移关系，可为DX抗拔桩的工程设计提供参考。 |
| 英文摘要: |
| Based on the elastic theory and the overlapped-form strain mode of the soil,the paper deals with an analytical solution for the load-displacement relationship of non-rigid and rigid DX pullout pile.The displacement equations of soils surrounding the pile were separately established to the equal diameter part and the branch part of the pile.The proposed solution can reflect the influence of the deformation of pile and non-homogeneity of soils' modulus along the depth in load-displacement relationship.The comparison with FEM analysis and full-scale loading test results showed that the analytical solution can well predict the displacement of pullout DX pile.The solution is simple and convenient,and can be used as a practical reference to the design of pullout DX pile. |
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