| 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. |
| 关键词: 砖砌体 压剪破坏 Drucker Prager准则 等效体积单元 数值模拟 |
| DOI：103969/j.issn.1007 9629201704016 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51208300） |
|
| Experimental Research and Verification of the Shear Compression Failure Criteria of Brick Masonry |
|
PENG Bin,WANG Dongdong,ZONG Gang,LIU Weidong
|
|
School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
|
| Abstract: |
| Based on the shear compression test results, the failure criteria of brick masonry used in representative volume element(RVE) models were proposed. Considering 3 types of brick laying pattern, 2 types of mortar bed thickness and 10 types of compressive stress level, shear compression tests for 144 brick masonry specimens were conducted using a special clamp. Considering the test results and the smoothness requirement on the failure surfaces, it showed that the Drucker Prager criteria can be used to describe the shear compression failure of brick masonry. The parameters of the criteria can be calibrated by the test results. The calibrated Drucker Prager criteria were used in RVE models, by which the compressive test and the pseudo static test of brick masonry specimens were simulated. The simulated results were in favorable agreement with the test results. The methodology and findings can be referred in numerical analysis for brick masonry materials or structures. |
| Key words: brick masonry shear compression failure Drucker Prager criteria representative volume element numerical simulation |
