砖砌体材料压剪破坏准则试验研究及验证

发布时间：2018-03-30 17:03

本文选题：砖砌体　切入点：压剪破坏　出处：《建筑材料学报》2017年04期

【摘要】：为了确定等效体积单元(RVE)模型中砖砌体材料的破坏准则,选取3种组砌方式、2种灰缝厚度和10种压应力水平,通过特别设计的夹具对144个砖砌体试件进行了压剪破坏试验.综合考虑试验结果和数值模拟对破坏面光滑性的要求,发现Drucker-Prager准则可用于描述砖砌体材料的压剪破坏,其参数可由试验结果进行标定.将标定后的Drucker-Prager准则应用于RVE模型,对砖砌体试件抗压试验和砖砌体墙伪静力试验进行了数值模拟,模拟结果与试验结果相符.研究手段和成果可为砖砌体材料或结构的数值分析提供参考.
[Abstract]:In order to determine the failure criterion of brick masonry material in the equivalent volume unit (RVE) model, the compression shear failure tests of 144 brick masonry specimens were carried out by means of specially designed clamps, two kinds of ash joint thickness and 10 kinds of compressive stress levels were selected.Considering the test results and the requirements of numerical simulation for the smoothness of the failure surface, it is found that the Drucker-Prager criterion can be used to describe the compressive and shear failure of brick masonry materials, and its parameters can be calibrated by the test results.The calibrated Drucker-Prager criterion is applied to the RVE model. The compressive tests of brick masonry specimens and pseudostatic tests of brick masonry walls are numerically simulated. The simulation results are in good agreement with the experimental results.The research methods and results can provide a reference for the numerical analysis of brick masonry materials or structures.
【作者单位】：上海理工大学环境与建筑学院;同济大学结构工程与防灾研究所;
【基金】：国家自然科学基金资助项目(51208300)
【分类号】：TU522

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