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A finite element model for hygrothermal analysis of masonry walls with FRP reinforcement

机译：FRP加固砌体墙湿热分析的有限元模型

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摘要

Modeling of moisture migration and heat transfer in fiber reinforced polymer (FRP) composite upgraded masonry structures is of great importance, since the interfacial adhesive between the reinforcing FRP laminate and the host masonry is prone to moisture damages. In this paper, a generic theoretical formulation was first developed to model moisture and heat transport in a layered structure consisting of distinct materials. This formulation was based on the framework of the hygrothermal model presented by Philip and De Vries for a monolithic porous medium. Finite element implementation of the formulation was subsequently used to model moisture and heat transport in an FRP reinforced masonry block. Analytical results were then compared with experimental data to validate the model. Parametric studies were then performed for a concrete block with a reinforcing FRP laminate partially covering one surface. The results showed that changing temperature gradient affects the moisture distribution considerably. This effect was found particularly significant at the concrete/FRP interface where a drastic change in local temperature gradient is present.
机译：纤维增强聚合物（FRP）复合材料升级的砖石结构中水分迁移和传热的建模非常重要，因为增强的FRP层压板与主体砖石之间的界面粘合剂容易受潮。在本文中，首先开发了一种通用的理论公式来模拟由不同材料组成的分层结构中的水分和热传递。该公式基于Philip和De Vries提出的整体多孔介质的湿热模型框架。该配方的有限元实现随后被用于模拟FRP增强的砖石砌块中的水分和热传递。然后将分析结果与实验数据进行比较以验证模型。然后对具有部分覆盖一个表面的增强FRP层压板的混凝土砌块进行参数研究。结果表明，变化的温度梯度会显着影响水分分布。在混凝土/ FRP界面处局部温度梯度出现急剧变化时，发现这种影响尤为明显。

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  • 来源
    《Finite elements in analysis & design》 |2009年第9期|511-518|共8页
  • 作者

    Mehran Khoshbakht; Mark W. Lin; Carl A. Feickert;

  • 作者单位

    University of Alabama in Huntsville, Department of Mechanical and Aerospace Engineering, Huntsville, AL 35899, USA;

    University of Alabama in Huntsville, Department of Mechanical and Aerospace Engineering, Huntsville, AL 35899, USA;

    US Army Construction Engineering Research Laboratory, Champaign, IL 61826-9005, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    moisture; temperature; FRP composites; porous media;

    机译：湿气;温度;玻璃钢复合材料;多孔介质;

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