抗滑桩抗滑机理及锚杆抗滑桩工程应用

在土体滑坡中,由于桩径和刚度较大,悬臂式抗滑桩和埋入式抗滑桩水平变形远小于坡体变形,容易导致桩体后侧坡体发生局部开裂.在对悬臂式和埋入式抗滑桩变形和受力分析的基础上,结合某路基滑坡加固工程实际,提出锚杆抗滑桩加固结构.作为一种埋入式抗滑结构,它既克服了悬臂式抗滑桩内部受力不合理的问题,又解决了普通抗滑桩容易引起的桩体后侧坡体局部失稳的问题.运用FLAC计算软件对路基加固工程中的锚杆抗滑桩的受力进行数值模拟计算.

Anti-slide mechanism of anti-slide piles and engineering application of anchoranti-slidepiles

The horizontal deformation of a cantilever anti-slide pile or an embeded anti-slide pile is less than that of landslide due to large pile diameter and stiffness,which leads to local cracking of the slope.On the basis of analyzing the stress and deformation of a cantilever anti-slide pile and an embeded anti-slide pile,the anchor anti-slide pile was put forward to reinforce subgrade landslide.As an embeded anti-slide structure,it solved not only the unreasonable stress problem of a cantilever anti-slide pile but also the local cracking problem of the slope.The stress of the anchor anti-slide pile was simulated with FLAC software in subgrade reinforcement engineering.