岩质边坡桩-锚复合支护结构抗滑作用机理研究
Study on the Anti-slip Mechanism of Pile-anchor Composite Support Structure for Rock Slopes
汪红武 1李文菊 2饶颖曜 2梁栋才 3毕钛俊3
作者信息
- 1. 云南大保高速公路有限公司 云南·大理 672600;云南交投集团投资有限公司 昆明市 650000
- 2. 云南交投集团投资有限公司 昆明市 650000
- 3. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室 武汉市 430071
- 折叠
摘要
抗滑桩-坡面预应力锚索组合支护结构以其良好的加固效果,可有效提高路堑边坡的稳定性.该文基于某高速公路边坡工程,建立了桩-锚组合支护结构的受力监测系统,分析了抗滑桩和预应力锚索的受力发展过程,总结了桩-锚组合支护结构的抗滑作用机理.结果表明:①抗滑桩-预应力锚索组合支护结构有明显的时间效应,支护结构内部受力条件随时间的增长逐渐趋于稳定;②预应力锚索先于抗滑桩发挥作用,开挖后及时支护极为重要;③支护结构稳定期约6 个月,在边坡加固完成后,应加强动态持续监测工作.
Abstract
The combination support structure of anti-slip piles and prestressed anchor cables on the slope can effectively improve the stability of cutting slopes due to its good reinforcement effect.Based on a cer-tain highway slope project,a pile-anchor composite support structure is designed,and a stress monitoring system for the support structure is established in this paper.The stress development process of anti-slip piles and prestressed anchor cables are examined,and then the anti-slip mechanism of the pile-anchor composite support structure is summarized.The results show that:①There is a significant time effect in the composite support structure of anti-slip piles and prestressed anchor cables,with internal stress condi-tions gradually stabilizing over time.②Pre-stressed anchor cables play a role before anti-slide piles,making timely support after excavation crucial.③The stability period of the support structure is about 6 months.After the slope reinforcement is completed,dynamic and continuous monitoring work should be strengthened.
关键词
抗滑桩/预应力锚索/组合/抗滑机理Key words
anti-slip pile/prestressed anchor cables/composite/anti-slip mechanism引用本文复制引用
出版年
2024
NETL
NSTL
万方数据