摘要
建立淤泥质黏性固化土试块无侧限抗压强度测试实验过程的离散元数值仿真模型,对不同固化料配比条件下固化土的宏-细观特征差异进行对比分析。研究结果表明:S95粒化高炉矿渣改善了固化土试块的微观组构参数,具体表现为颗粒黏结力的增加、裂缝扩展方式的转变、孔隙度的减小以及配位数的增加。从微观角度解释S95粒化高炉矿渣对淤泥质黏性固化土弹性模量、峰值强度等宏观力学参数的改善。并且为固化土的宏观力学性能研究提供新思路。
This study develops a discrete element numerical model to simulate unconfined compressive strength(UCS)testing of marine silty cohesive solidified soil specimens.Comparative analysis was conducted under different binder ratios to evaluate macro-and micro-scale mechanical behavior.Results reveal that the incorporation of S95 granulated blast furnace slag significantly enhances the microstructural parameters of the solidified soil,including increased particle bonding strength,altered crack propagation patterns,reduced porosity,and higher coordination numbers.These microstructural changes account for improvements in key macroscopic mechanical properties,such as elastic modulus and peak compressive strength.The findings provide a novel micro-mechanical perspective on improving the performance of silty cohesive solidified soils.
作者
顾慧
耿星月
孙旭超
GU Hui;GENG Xinyue;SUN Xuchao(Guangdong Railway Planning and Design Institute Co.,LTD,Guangzhou 510000,Guangdong,China;Wuhan Institute of Technology School of Resources&Safety Engineering,Wuhan 430074,Hubei,China)
出处
《浙江水利科技》
2025年第3期21-27,36,共8页
Zhejiang Hydrotechnics
基金
国家自然科学基金项目(52079098)。
关键词
淤泥质
固化土
无侧限
抗压强度
细观组构
silty
solidified soil
unconfined
compressive strength
mesoscopic fabric
作者简介
顾慧(1982-),女,高级工程师,硕士研究生,主要从事交通领域地质勘察和路基设计研究工作。E-mail:46610759@qq.com。
