地质科技通报2026，Vol.45Issue(1)：2-14,13.DOI:10.19509/j.cnki.dzkq.tb20240341
加筋废弃钢渣混合土循环剪切性能
Cyclic shear performance of reinforced waste steel slag mixed soil
摘要
Abstract
[Objective]To improve the engineering properties of clay and increase the utilization of waste steel slag(SS),[Methods]geogrid reinforcement was employed,followed by direct shear tests,cyclic shear tests,and post-cyclic direct shear tests conducted on steel slag-clay mix,sand-clay mix,and pure clay.The study investigated the strength characteristics,damping ratio,shear stiffness changes,and displacement of the mixed soil reinforcement-soil interface under various conditions,including different steel slag contents,vertical stress,moisture content,and shear amplitudes.[Results]The test results indicate that steel slag significantly enhances the shear strength of the clay-reinforcement interface,with improvement being more effective than conventional sand-modified clay.The steel slag-clay mixed soil exhibited higher damping ratio and shear stiffness,suggesting better vibration damping and energy dissipation properties.Among the various mixtures,the steel slag-clay mix with 40%steel slag content demonstrated the best shear strength,damping ratio,and shear stiffness.Additionally,the shear strength of the steel slag-clay mixed soil increased after cyclic loading compared to pre-cyclic direct shear conditions.The results also show that moisture content has a more significant impact on shear strength,shear stiffness,and damping ratio than vertical stress and shear amplitude.[Conclusion]The steel slag-clay mixed soil exhibits improved damping and energy dissipation properties under cyclic shear loading.The experimental findings provide a theoretical basis for using steel slag as a substitute for sand to improve clay soils.关键词
钢渣-黏土混合土/直接剪切/循环剪切/剪切刚度/阻尼比Key words
steel slag-clay mixed soil/direct shear/cyclic shear/shear stiffness/damping ratio分类
建筑与水利引用本文复制引用
李丽华,张永帅,叶治,康浩然,白玉霞..加筋废弃钢渣混合土循环剪切性能[J].地质科技通报,2026,45(1):2-14,13.基金项目
湖北省高等学校优秀中青年科技创新团队项目(T2023006) （T2023006）
国家自然科学基金项目(52278347 （）
52508375) （）
湖北省基金创新群体项目(2024AFA009) （2024AFA009）
