摘要
预应力锚杆锚固角度是影响格构锚固体系支护效果的重要参数,合理的预应力锚杆锚固角度可以对堆积层滑坡提供更有效的支护效果。文章以青岛返岭前滑坡BP2号堆积层滑坡为研究对象,采用Midas GTS NX有限元软件分别建立了自重、地震、极端降雨与极端降雨地震四种工况滑坡数值模拟模型,以此为基础分析了其不同工况与锚杆锚固角度条件下边坡稳定性系数、受力、变形变化规律,确定了格构锚固体系最优预应力锚杆锚固角度设计公式,从受力条件和加固工程成本两个角度对预应力锚杆锚固角度进行了整综合分析与优化设计,从而使最大化发挥格构锚固体系支护效果,可为堆积层滑坡格构锚固体系的参数优化设计提供参考。
The anchoring angle of prestressed anchor rods is an important parameter that affects the support effect of lattice anchoring systems.A reasonable anchoring angle of prestressed anchor rods can provide more effective support effects.Taking the BP2 landslide in Qingdao Huilingqian as the research object,four working conditions were designed based on different environmental conditions:self weight,earthquake,extreme rainfall,and extreme rainfall earthquake.The Midas GTS NX finite element software was used to establish its numerical simulation model,and analyze the slope stability coefficient,stress,deformation changes,etc.under different working conditions and anchor rod anchoring angles.Thus,the optimal design formula for the prestressed anchor rod anchoring angle of the lattice anchoring system can be obtained.Thus,maximizing the support effect of the lattice anchoring system can provide reference for the parameter optimization design of the lattice anchoring system for landslide deposits.
作者
纪红亮
贺可强
刁之旺
逄淑祥
李精昆
JI Hongliang;HE Keqiang;DIAO Zhiwang;PANG Shuxiang;LI Jingkun(Communications Construction Company of CSCEC 7th Division Co,Ltd,Zhengzhou 450003,Henan,China;School of Civil Engineering,Qingdao University of Technology,Qingdao 266520,Shandong,China)
出处
《工程建设》
2025年第11期27-35,共9页
Engineering Construction
基金
山东省自然科学基金重点项目(ZR2020KE004)
中建七局科技研发课题(CSCEC7b-2023-Z-12)。
关键词
堆积层滑坡
预应力锚杆
锚固角度优化
数值模拟
accumulation layer landslide
prestressed anchor rod
optimization of anchoring angle
numerical simulation
