华南理工大学学报（自然科学版）2025，Vol.53Issue(2)：124-135,12.DOI:10.12141/j.issn.1000-565X.240291
橡胶颗粒混合土加筋路堤稳定性研究
Stability Study of Reinforced Embankment with Rubber Particles Mixed Soil
摘要
Abstract
To reduce the environmental pollution caused by waste rubber tires,it is an effective solution to pro-cess them into derived aggregates and apply them in engineering reinforcement.Currently,geogrid reinforcement technology is widely used in embankment and slope projects.However,due to the limitation of soil resources,most of the local fine aggregates are used for backfill and compaction,which leads to the geogrid not being able to give full play to the reinforcing effect.Therefore,this paper proposed the method of composite reinforced embankment of waste tire rubber particles and geogrid to solve the above problems.The influence of rubber particle content(0%,5%,10%,15%,and 20%)on the shear characteristics of the mixed soil was examined using a triaxial shear testing system.Additionally,pullout tests on geogrids were conducted to investigate the effects and mechanisms of rubber particle content on the pullout characteristics of uniaxial,biaxial,and triaxial geogrids.Finally,the deformation characteristics and stability of reinforced soil embankment with rubber granular soil mixture were analyzed by in-door tests and numerical simulation methods.The results indicate that the elastic modulus of the mixed soil gradu-ally decreases as the rubber particle content increases.At the same time,the shear strength index shows an initial increase followed by a decrease,reaching its maximum value at a content of 15%.The peak tensile force of the three types of geogrids in the mixed soil follows the same trend with its maximum value at a content of 15%.The addition of 15%rubber particles in bi-axial and tri-axial geogrid-reinforced embankments reduces the settlement of the embankment by approximately 19%and 23%,respectively,as well as the lateral earth pressure by approxi-mately 18%and 23%.The presence of the composite reinforcement layer significantly limits the development depth of the slope failure slip surface,thus enhances the embankment's resistance to deformation.关键词
废旧轮胎橡胶颗粒/混合土/加筋路堤/剪切特性/拉拔特性/变形特性Key words
waste tire rubber particle/mixed soil/reinforced embankment/shear characteristic/pull-out characteristic/deformation characteristic分类
建筑与水利引用本文复制引用
李涛,李越,舒佳军,张瑞海,刘波..橡胶颗粒混合土加筋路堤稳定性研究[J].华南理工大学学报（自然科学版）,2025,53(2):124-135,12.基金项目
国家自然科学基金项目(42172319) Supported by the National Natural Science Foundation of China(42172319) （42172319）
