摘要
利用离散元软件编写了任意多边形粗骨料的自由生成机制。在此基础上,建立了混凝土单轴受压数值模型;进而分析了粗骨料的级配对混凝土单轴压缩过程中宏观力学和细观裂纹等方面的影响。通过对比可得:良好的粗骨料级配一方面对混凝土裂缝的开展起到良好的阻碍作用,另一方面也能提高混凝土的强度和弹性模量。
This paper implements the free generation mechanism of arbitrary polygon aggregates on the program by discrete element software. On this basis, the numerical model of concrete under uniaxial compression is established; And then analyze the effect of different coarse aggregate gradation on macro mechanics,mesoscopic cracks etc of concrete under uniaxial compression test. The results showed that a reasonable coarse aggregate gradation could hamper the development of concrete cracks; on the other hand, a reasonable coarse aggregate gradation could improve the strength and elastic modulus of concrete.
作者
刘晶
邢心魁
邱宁
LIU Jing XING Xinkui QIU Ning(Guilin Univ. of Technology, Guangxi Guilin 541004, China Guangxi Key Laboratory of Geomechanics and Geotechnieal Engi. , Guangxi Guilin 541004 ,China)
出处
《低温建筑技术》
2017年第1期8-10,共3页
Low Temperature Architecture Technology
基金
广西岩土力学与工程重点实验室基金资助项目(2015-A-03)
关键词
离散元
粗骨料
级配
影响
discrete element model
coarse aggregate
gradation
effect
