辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(1)：93-101,9.
基于PFC的抗浮锚杆上拔群锚效应研究
Research on the group anchor effect of anti-floating anchor rod pull-out based on PFC
摘要
Abstract
To explore the mechanism of pull-out group anchor effect of anti-floating anchor rods and improve the anti-lifting bearing capacity of anti-floating anchor rods.A micromechanical model for the pull-out bearing capacity of anti-floating anchor rods was established using contact mechanics methods,and a discrete element model was established using particle flow theory to analyze the mechanical properties between anti-floating anchor rods and rock and soil under different working conditions.The results show that when the distance between anchor piles is 4D,6D,and 8D,both axial stress and shear stress show an initial increase followed by a decrease,and finally tend to stabilize.As the pile spacing increases,the axial stress between the anti-floating anchor rods shows a trend of first increasing and then decreasing.As variation time step increases,the porosity at different positions shows a trend of first increasing and then stabilizing.The analysis method based on particle size model can effectively analyze the group anchoring effect of anti-floating anchor rods,providing technical means for underground structural engineering construction and safety management.关键词
抗浮锚杆/群锚效应/颗粒流/应力分布/孔隙率Key words
anti-floating anchor rod/group anchor effect/particle flow/stress distribution/porosity分类
建筑与水利引用本文复制引用
乔建刚,李娟,张勇,李景文..基于PFC的抗浮锚杆上拔群锚效应研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(1):93-101,9.基金项目
国家重点研发项目(2017YFC0805404) （2017YFC0805404）
国家自然科学基金项目(52278342) （52278342）
