| 混凝土动力强度提高的机理探讨 | |
| 李庆斌 ; 郑丹 ; LI Qing-bin ; ZHENG Dan | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 混凝土 率效应 动力强度 细观力学 concrete rate effect dynamic strength micromechanics TU528 |
| 其他题名 | MICRO-MECHANISM ON THE ENHANCEMENT OF DYNAMIC STRENGTH FOR CONCRETE |
| 中文摘要 | 土木工程中,混凝土结构都不可避免的会承受动力荷载,尤其是对高拱坝来说,地震荷载是非常重要的荷载。准确地认识混凝土材料的动态力学性能是进行准确的混凝土结构动力响应分析的基础。因此混凝土动力本构模型的研究是一个十分有意义的课题。而现有混凝土动力模型大多是宏观、唯像的模型,很难反映混凝土材料的细观特征。采用细观力学方法得到了混凝土的动力强度,与文献中的试验结果对比吻合得较好。; In civil engineering, concrete structures often suffer dynamic loadings. Earthquake is an important load for dynamic analysis of concrete structures especially for high arch dams. Thus, it is very important to analyze the dynamic properties of concrete and present reasonable and practical models for dynamic analysis of concrete structures. Most concrete dynamic models in the literature are macroscopic and empirical, which cannot describe the micro-mechanism of concrete material precisely. A micromechanical model is presented in this paper. A comparison between the theoretical result and the experimental data in the literature indicates that good agreement is achieved, which implies that the model can be used to explain the rate-dependent properties of concrete.; 国家杰出青年基金资助项目(50225927) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/59475]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 李庆斌,郑丹,LI Qing-bin,等. 混凝土动力强度提高的机理探讨[J],2010, 2010. |
| APA | 李庆斌,郑丹,LI Qing-bin,&ZHENG Dan.(2010).混凝土动力强度提高的机理探讨.. |
| MLA | 李庆斌,et al."混凝土动力强度提高的机理探讨".(2010). |
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