摘要
为研究在钢筋混凝土框架结构和砌体结构中具有良好应用前景的无浆砌体墙的剪切特性,采用反复加载试验方法,完成了36组干砌块双剪试验,随后利用界面单元和平面应力单元建模开展了相应有限元分析.试验研究中着重考察了反复加载过程对砌体剪切特性的影响,研究结果表明:无浆砌体通缝剪切特性符合摩尔-库仑关系;剪切摩擦系数随加载周期、幅值变化而改变;利用界面单元及平面应力单元建立的有限元模型可以有效地对剪切试验进行仿真.
To research the shear-compression behavior of mortar-less masonry which has potential in the reinforcement concrete frame and masonry structures,36 shear-compression tests were carried under cyclic loads.During the test,the influence of cyclic shear-compress load on the behavior was emphasized.After that,a finite element model was built with interface and plain stress elements.The research indicates that the coulomb friction law is adequate to represent the failure of mortar-less joints under moderate stress levels,the friction coefficient varies under different load aptitude which can’t be ignored and the model with interface element and plane stress element is valid in simulation of shear-compression test.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2012年第8期6-10,共5页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(51178153)
教育部新世纪优秀人才支持计划(NCET-08-0160)
关键词
无浆砌体接缝
剪-压试验
摩擦系数
反复加载
滞回特性
有限元分析
dry stack masonry joint
shear-compression test
friction coefficient
cyclic loading
hysteretic behaviour
finite element method analysis
