›› 2013, Vol. 27 ›› Issue (4): 96-99.

• 工程实录 • 上一篇    下一篇

改进的预应力锚索模拟方法及数值验证

关浩斐   

  1. ( 葛洲坝集团公司,湖北宜昌 474150 )
  • 收稿日期:2013-05-18 出版日期:2013-08-20 发布日期:2013-08-27
  • 作者简介:关浩斐(1981-),男,助理工程师,葛洲坝集团西北分公司瀑布沟项目部总经理助理,研究方向为坝体结构。

Improved Method in Pre-stressed Ground Anchor Modeling and its Numerical Verification

GUAN Haofei   

  1. (China Gezhouba Group Co.Ltd.,Yichang Hubei,474150)
  • Received:2013-05-18 Online:2013-08-20 Published:2013-08-27

摘要: 通过考虑预应力锚索锚固体的抗弯能力,改善数值模拟中预应力锚索的加固效果,以改变大型边坡锚索群加固效果被严重低估的现状,数值试验结果表明,在下一步开挖前,考虑抗弯能力的锚索与不考虑抗弯能力的锚索模型的作用效果完全一致,在下一步开挖后,两种锚索的作用效果出现明显差异,考虑抗弯效果的锚索单元对边坡塑性区、最小主应力的降低及边坡位移的约束效果更加明显。

关键词: 锚索, 边坡加固, 数值模拟

Abstract: The effect of the ground anchor in the large slope stability application is usually underestimated. To improve the estimation in the slope remediation projects, a new approach that considering the bending moment capacity of the anchor is presented. The numerical simulation results indicate that, before the slope excavation, both models that with/without bending moment capacity have the same performance. After the slope excavation, the ground anchors that considering bending moment effects are significantly different from the other models. The new model has significant effect on the reduction of the plastic zone development and minor principal stresses and restriction of the slope deformations.

Key words: Ground Anchors, Slope Stability Remediation, Numerical Simulation