太原理工大学学报2025，Vol.56Issue(2)：315-326,12.DOI:10.16355/j.tyut.1007-9432.20230082
考虑高温损伤影响玻化微珠混凝土氯离子传输模拟分析
Chloride Ion Transport Simulation of Concrete with Added Glazed Hollow Bead Considering Thermal Damage
摘要
Abstract
[Purposes]The crack damage to tunnel lining structure caused by fire generally poses a significant challenge to the maintenance of its structural durability.[Methods]To address this issue,a convex polygon aggregate numerical model of concrete with glazed hollow beads(GIC)consisting of coarse aggregate,mortar,and the interface transition zone was established through the interactive use of MATLAB and COMSOL softwares.The numerical simulation was conducted to investigate the chloride ion transport behavior considering the effect of high temperature and the model validity was then verified.According to the theory of steel reinforcement depassivation life,an evaluation mecha-nism of post-disaster service life parameter impact was further established.[Findings]The results show that with the increase of the volume fraction of glazed hollow beads,the decrease of the thick-ness of interfacial transition zone,and the increase of the maximum aggregate diameter,the post-disaster residual service life is improved.Especially,the effect of glazed hollow beads is particularly significant.[Conclusions]According to parameter analysis,the durability limit state function consid-ering the influence of high temperature is finally established through single factor correlation analysis and multivariate nonlinear analysis methods.This study could provide a reference for building struc-ture design and post-disaster life assessment in practical engineering.关键词
玻化微珠/混凝土/高温/氯离子传输/数值模拟/服役寿命Key words
glazed hollow beads/concrete/high temperature/chloride ion transport/numerical simulation/service life分类
通用工业技术引用本文复制引用
晋卓阳,李明厚,SELYUTINA Nina,SMIRNOV Ivan,刘元珍,张玉..考虑高温损伤影响玻化微珠混凝土氯离子传输模拟分析[J].太原理工大学学报,2025,56(2):315-326,12.基金项目
国家自然科学基金国际合作与交流项目(52111530039) （52111530039）
Russian Foundation for Basic Research(21-51-53008) （21-51-53008）
