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力学与实践 ›› 2011, Vol. 33 ›› Issue (5): 16-20.doi: 10.6052/1000-0879-lxysj2010-525

• 应用研究 • 上一篇    下一篇

预应力锚索抗滑桩中预拉力合理值的探讨

郑明新   

  1. 华东交通大学 道桥与岩土工程研究所
  • 收稿日期:2010-12-31 修回日期:2011-06-16 出版日期:2011-10-15 发布日期:2011-11-07
  • 通讯作者: 郑明新 E-mail:zhengmx2002@yahoo.com.cn

THE OPTIMUM PRESTRESS OF ANTI-SLIDE PILE WITH ANCHORING CABLE

Zheng Mingxin   

  • Received:2010-12-31 Revised:2011-06-16 Online:2011-10-15 Published:2011-11-07
  • Contact: Zheng Mingxin E-mail:zhengmx2002@yahoo.com.cn

摘要: 结合目前抗滑工程设计现状及预应力锚索抗滑桩桩土相互作用的特征, 引入接触单元并 改进有限元FCEP2D 软件进行计算, 得到抗滑桩锚固段的受力、弯矩和位移规律; 进而分析了不同预应力、不同滑坡推力工况下的抗滑效果, 提出了预应力锚索抗滑 桩的最佳预应力, 对工程设计具有一定的指导意义.

关键词: 桩土接触问题,预应力锚索,抗滑桩,最佳预应力

Abstract: Based on the design methods and the interaction characteristic of anti-slide pile and soil, a program of contact FEM using contact element is designed. Then, the calculation model is set up; and the bending moment, displacement along the pile with different cable’s prestress and different thrusts are calculated. Finally, the optimum presstress is discussed, which has a significant guide to the landslide control.

Key words: Problem of pile-soil contact, anti-slide pile, cable with prestress, optimum prestress