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	混凝土单轴抗压强度三维细观数值仿真
	王娟 ; 李庆斌 ; 卿龙邦 ; 管俊峰 ; WANG Juan ; LI Qing-bin ; QING Long-bang ; GUAN Jun-feng
	2016-03-30 ; 2016-03-30
关键词	混凝土 初始缺陷 界面弹簧元模型 单轴抗压强度 数值仿真 concrete initial defects interfacial spring element model uniaxial compressive strength numerical simulation TU528 TU37
其他题名	3D SIMULATION OF CONCRETE STRENGTH UNDER UNIAXIAL COMPRESSIVE LOAD
中文摘要	该文在细观层面上将混凝土看作粗骨料、砂浆、界面、初始缺陷组成的四相复合材料,给出了三维随机缺陷界面弹簧元模型模拟混凝土单轴抗压强度的数值方法。讨论了初始缺陷含量及其分布的确定方法以及界面细观计算参数的取值范围。数值模拟结果表明:混凝土的抗压强度随着初始缺陷含量的增加有大幅度降低;当界面初始缺陷含量为30%时,混凝土抗压强度的计算值与试验值吻合较好。; An interfacial spring element model(ISEM) is employed to simulate the strength of concrete under uniaxial compressive loading. In this model, the concrete was considered as a composition consisting of aggregate, matrix, interfacial transition zone(ITZ) and initial defects in ITZ at meso level. The distribution and contents of the initial defects, and the ITZ properties parameters are discussed, accordingly which, the range of meso-parameters are suggested. The results show that the compressive strength of concrete decreases with the increase of the ITZ initial defects. When the initial defects in ITZ achieves to 30 percent of ITZ elements, the numerical simulation results of concrete compressive strength agree well with the experimental results.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/148700]
专题	清华大学
推荐引用方式 GB/T 7714	王娟,李庆斌,卿龙邦,等. 混凝土单轴抗压强度三维细观数值仿真[J],2016, 2016.
APA	王娟.,李庆斌.,卿龙邦.,管俊峰.,WANG Juan.,...&GUAN Jun-feng.(2016).混凝土单轴抗压强度三维细观数值仿真..
MLA	王娟,et al."混凝土单轴抗压强度三维细观数值仿真".(2016).

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