基于体素化中尺度模型的混凝土压缩损伤机制研究
Research on the Compressive Damage Mechanism of Concrete Based on Voxelized Mesoscale Model
DOI: 10.12677/mos.2026.155085, PDF,    科研立项经费支持
作者: 陆 毅, 汪 帅：辽宁工业大学土木建筑工程学院，辽宁 锦州；曲艳东*：大连民族大学土木工程学院，辽宁 大连
关键词: 混凝土；体素化建模；损伤演化；能量耗散；Concrete； Voxelized Modeling； Damage Evolution； Energy Dissipation
摘要: 基于体素化多相中尺度建模框架，构建了包含骨料、基体和界面过渡区(ITZ)三维中尺度的有限元模型。选取体积分数为17%~35%的理想化球形模型来模拟骨料。通过控制变量，研究骨料致密化对于混凝土受压过程的影响。并引入损伤耗散能的表征方法，对于能量演化过程及主导破坏机制进行定量分析。研究表明：随着骨料体积分数的增加，混凝土宏观抗压强度显著提高，但裂纹萌生明显提前；总损伤耗散能呈非线性增长，ITZ逐渐成为主要能量耗散区域。
Abstract: A three-dimensional mesoscale finite element model encompassing aggregate, matrix and interfacial transition zone (ITZ) was established on the basis of a voxelized multiphase mesoscale modeling framework. Idealized spherical models with a volume fraction ranging from 17% to 35% were adopted to simulate the aggregate. The effect of aggregate densification on the compressive process of concrete was investigated by means of the control variable method. Moreover, a characterization method of damage dissipation energy was introduced to conduct a quantitative analysis of the energy evolution process and the dominant failure mechanism. The results show that with the increase of aggregate volume fraction, the macroscopic compressive strength of concrete is significantly improved, while the crack initiation occurs obviously in advance; the total damage dissipation energy increases nonlinearly, and the ITZ gradually becomes the main energy dissipation region.
文章引用：陆毅, 曲艳东, 汪帅. 基于体素化中尺度模型的混凝土压缩损伤机制研究[J]. 建模与仿真, 2026, 15(5): 217-229. https://doi.org/10.12677/mos.2026.155085

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