交通节能与环保2025，Vol.21Issue(4)：195-200,6.DOI:10.3969/j.issn.1673-6478.2025.04.041
单层衬砌喷射混凝土早高强作用机理的分子动力模拟研究
Molecular Dynamics simulation Study on the Mechanism of Early and High Strength of Single-layer Lining Shotcrete
摘要
Abstract
In this paper,on the basis of the research on the mechanical properties of shotcrete,the strength characteristics of single-layer lining early high-strength shotcrete were simulated with the help of the radial distribution function(RDF),free volume fraction(FFV),mean square displacement(MSD),concentration profile(CP)and elastic modulus in molecular dynamics simulation.The study shows that the RDFcurves of the established model behave consistently with the peak trend of the currently proven model,and the modulus of elasticity and Poisson's ratio of the model are within a reasonable range.The modulus of elasticity value of the early high strength shotcrete with 30％of the super micronised composite admixture was increased by 6.92％compared to the benchmark model,while its FFV value was 3.31％lower than that of the benchmark model.This indicates that the overall mechanical properties of the lining mixed with super micronised powder are better and the internal pore distribution is more uniform.The results of this paper provide theoretical support for molecular dynamics simulation of single-layer lining shotcrete.关键词
单层衬砌/早高强喷射混凝土/力学性能/分子动力学模拟/超微粉复合掺和料/纳米晶胶聚合物Key words
single-layer lining/early and high-strength shotcrete/mechanical properties/molecular dynamics simulation/composite admixture with ultrafine powder/nanocrystalline gum polymer分类
建筑与水利引用本文复制引用
王云晖,徐海岩,黄榆,曹洲,龙华,何毅,申立学..单层衬砌喷射混凝土早高强作用机理的分子动力模拟研究[J].交通节能与环保,2025,21(4):195-200,6.基金项目
西藏自治区科技厅-日喀则市区域科技协同创新专项(QYXTZX-RKZ2023-02) （QYXTZX-RKZ2023-02）
日喀则市科技局科技计划项目 （）
四川省自然科学基金青年基金(2024NSFSC0935). （2024NSFSC0935）
