砖砌体材料压剪破坏准则试验研究及验证  

Experimental Research and Verification of the Shear-Compression Failure Criteria of Brick Masonry

作　　者：彭斌[1] 王冬冬[1] 宗刚[2] 刘卫东[1] 

机构地区：[1]上海理工大学环境与建筑学院,上海200093 [2]同济大学结构工程与防灾研究所,上海200092

出　　处：《建筑材料学报》2017年第4期586-591,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51208300)

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.Based on the shear-compression test results,the failure criteria of brick masonry used in representative volume element（RVE）models were proposed.Considering 3types of brick laying pattern,2types 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.

关 键 词：砖砌体 压剪破坏 DRUCKER-PRAGER准则 等效体积单元 数值模拟 

分 类 号：TU501[建筑科学—建筑技术科学] TU522