河北工业科技2025，Vol.42Issue(3)：231-239,264,10.DOI:10.7535/hbgykj.2025yx03004
土层锚固体荷载传递特征试验及数值模拟研究
Experimental and numerical simulation study on load transfer characteristics of soil anchors
摘要
Abstract
To investigate the relationship between the load bearing and deformation characteristics of soil tension-type anchor rods and pressure-type anchor rods under pull-out loads,pull-out tests were conducted on tension-type and pressure-type anchors in both sandy and clayey strata based on the central anchored pressure plate experimental principle.The load transfer characteristics and deformation failure mechanisms during the bearing and failure processes of soil anchors were analyzed,and the results were compared with numerical simulations.The results indicate that both tension-type and pressure-type anchors exhibit three-stage deformation characteristics during the pull-out tests:the"elastic deformation stage","plastic deformation stage"and"post-debonding residual friction stage".As the anchorage length increases,the anchorage force initially increases and then stabilizes.Specifically,when the anchorage length of tension-type anchors increase from 400 mm to 500 mm,the maximum increase in ultimate load reaches 55.32％.The primary failure mode of soil anchorage systems occurs at the interface between the anchor and the surrounding soil.During the pull-out process,the shear stress-bearing capacity of the soil increases with the applied load.It attributes to the rotational movement of soil particles around the anchor,which generates rolling friction and dissipates energy,thereby indirectly enhancing the soil's load-bearing capacity.This study reveals the load transfer characteristics of soil anchorage systems under pull-out loads,providing theoretical reference for the design of soil anchor-supported structures.关键词
基础工程/锚固体/荷载传递/承压板法/拉拔试验/界面Key words
basic engineering/anchor/load transfer/pressure plate method/pull-out test/interface分类
土木建筑引用本文复制引用
王开彬,刘钦,王洪涛,刘淦楠..土层锚固体荷载传递特征试验及数值模拟研究[J].河北工业科技,2025,42(3):231-239,264,10.基金项目
国家自然科学基金(52374093) （52374093）
中国博士后科学基金(2022M711314) （2022M711314）
山东省自然科学基金(ZR2022ME088) （ZR2022ME088）
济南市科研带头人工作室项目(202333054) （202333054）
