人民长江2024，Vol.55Issue(1)：216-222,7.DOI:10.16232/j.cnki.1001-4179.2024.01.030
根系影响下粗糙土-岩接触面剪切损伤模型研究
Research on shear damage model of rough soil-rock interface influenced by root
摘要
Abstract
To evaluate the safety and stability of soil-rock mixed slopes,it is vital to reasonably describe the shear behavior of soil-rock interface influenced by roots and roughness.In this study,based on Weibull distribution,a statistical shear damage model of soil-rock interface was established by taking the influences of root content and roughness into account.According to the experimental results,the influence functions of root content and roughness on the shear stiffness of the contact interface and model parameters were determined,and the model feasibility was verified.Then,the influences of root content,roughness,and model pa-rameters(m and w0),on the shear deformation of contact interface and damage evolution were further discussed.The results showed that root and roughness could inhibit the damage development of interface and improve the strength of interface.The dam-age model proposed in this study could describe the shear damage evolution and shear mechanics characteristics of soil-rock con-tact surface under the influence of roots and roughness,and provide a theoretical basis for accurate analysis and evaluation of shear behavior of soil-rock contact surface and stability of soil-rock mixed slope.关键词
土-岩接触面/含根率/Weibull分布/粗糙度/剪切损伤模型/生态防护/土岩边坡Key words
soil-rock interface/root content/Weibull distribution/roughness/shear damage model/ecological slope protection/soil-rock slope分类
建筑与水利引用本文复制引用
刘振贤,丁瑜,夏振尧,彭博识..根系影响下粗糙土-岩接触面剪切损伤模型研究[J].人民长江,2024,55(1):216-222,7.基金项目
国家自然科学基金联合基金重点项目(U21A2031) （U21A2031）
