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工业环境SO2腐蚀混凝土损伤本构模型研究

牛荻涛 吴鸿渠 黄杰 吕瑶 杨瑞希

牛荻涛, 吴鸿渠, 黄杰, 吕瑶, 杨瑞希. 工业环境SO2腐蚀混凝土损伤本构模型研究[J]. 工业建筑, 2024, 54(8): 96-103. doi: 10.3724/j.gyjzG24021904
引用本文: 牛荻涛, 吴鸿渠, 黄杰, 吕瑶, 杨瑞希. 工业环境SO2腐蚀混凝土损伤本构模型研究[J]. 工业建筑, 2024, 54(8): 96-103. doi: 10.3724/j.gyjzG24021904
NIU Ditao, WU Hongqu, HUANG Jie, LUY Yao, YANG Ruixi. Damage Constitutive Model of Concrete Under Industrial SO2 Corrosive Environment[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(8): 96-103. doi: 10.3724/j.gyjzG24021904
Citation: NIU Ditao, WU Hongqu, HUANG Jie, LUY Yao, YANG Ruixi. Damage Constitutive Model of Concrete Under Industrial SO2 Corrosive Environment[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(8): 96-103. doi: 10.3724/j.gyjzG24021904

工业环境SO2腐蚀混凝土损伤本构模型研究

doi: 10.3724/j.gyjzG24021904
基金项目: 

国家自然科学基金项目(52078413)。

详细信息
    作者简介:

    牛荻涛,博士,教授,博士生导师,主要从事混凝土结构耐久性方面的研究。电子信箱:niuditao@163.com。

Damage Constitutive Model of Concrete Under Industrial SO2 Corrosive Environment

  • 摘要: 为研究工业环境SO2腐蚀混凝土的应力-应变特征,揭示SO2腐蚀混凝土力学性能损伤规律,开展了工业SO2环境混凝土腐蚀试验,分析了水胶比(0.37、0.47、0.57)、粉煤灰掺量(0%、10%、20%)和不同腐蚀循环次数对混凝土损伤层厚度、应力-应变曲线、峰值应力、峰值应变及弹性模量的影响。基于损伤力学理论,建立工业环境SO2腐蚀混凝土单轴压缩损伤本构模型。结果表明:混凝土损伤层厚度随着SO2循环次数的增加而增大,变化规律符合指数函数关系;SO2腐蚀后混凝土试件的峰值应力下降,峰值应变增加,弹性模量下降,曲线下降段变陡峭,变形能力降低,表现出明显脆性破坏特征。掺加粉煤灰可以减缓SO2腐蚀损伤速率,提高混凝土抵抗SO2腐蚀的能力。
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出版历程
  • 收稿日期:  2024-02-19
  • 网络出版日期:  2024-09-19

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