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。
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 certain 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 conditions 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.
作者
汪红武
李文菊
饶颖曜
梁栋才
毕钛俊
Wang Hongwu;Li Wenju;Rao Yingyao;Liang Dongcai;Bi Taijun(Yunnan DaBao Expressway Investment Development Co.,Ltd.;Yunnan Communications Investment Group Investment Co.,Ltd.;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences)
出处
《勘察科学技术》
2024年第4期16-19,共4页
Site Investigation Science and Technology
基金
云南省交通厅科技创新项目([2024]116号)
国家自然科学基金(51779250)。
关键词
抗滑桩
预应力锚索
组合
抗滑机理
anti-slip pile
prestressed anchor cables
composite
anti-slip mechanism
作者简介
汪红武(1972-),男,高级工程师,主要从事边坡方面的研究。
