| 上拔荷载作用下挤扩支盘桩颗粒流数值模拟 |
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| 引用本文： | 周喻,李健,吴顺川.上拔荷载作用下挤扩支盘桩颗粒流数值模拟[J].路基工程,2011,0(3):13-15. |
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| 作者姓名： | 周喻 李健 吴顺川 |
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| 作者单位： | 1.北京科技大学土木与环境工程学院，北京 100083 |
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| 基金项目： | 2006年教育部新世纪优秀人才支持计划(NCET-06-0084) |
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| 摘 要： | 基于颗粒流理论,采用PFC2D程序,研究粘土地基中挤扩支盘桩受上拔荷载时,荷载-桩体位移关系、土体变形破坏情况及地基位移场分布。结果表明:荷载与桩体位移变化曲线分为初始弹性阶段、中间塑性阶段和破坏阶段;土体破坏产生的滑裂面主要从下部支盘的端部沿斜上方向地表发展;土体颗粒受影响区域为倒钟形。
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| 关 键 词： | 上拔荷载 挤扩支盘桩 颗粒流理论 PFC2D |
| 收稿时间： | 2019-11-09 |
Numerical Simulation on Particle Flow of Squeezed Branch Pile under Uplift Loading |
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| Authors: | ZHOU Yu LI Jian WU Shun-chuan |
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| Affiliation: | ZHOU Yu1,LI Jian1,WU Shun-chuan1,2 (1.School of Civil and Environmental Engineering,Beijing University of Technology,Beijing 100083,China,2.State Key Laboratory of High-efficient Mining and Safety of Metal Mines,Ministry of Education,China) |
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| Abstract: | Based on particle flow theory,load-pile displacement relationship,soil deformation and distribution of foundation displacement field when squeezed branch pile under uplift loading in clay foundation are studied using PFC2D program.The results show that load-pile displacement curve is classified into initial elastic stage,intermediate plastic stage and failure stage.Sliding face caused by soil failure is mainly from the tip of lower branch into ground surface along oblique direction.Soil particles are affect... |
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| Keywords: | uplift loading squeezed branch pile particle flow theory PFC2D |
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