| 混凝土细观损伤破坏机理的分析与研究 |
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| 引用本文： | 屈彦玲,杨茜,秦伟.混凝土细观损伤破坏机理的分析与研究[J].国防交通工程与技术,2008,6(1):6-9,13. |
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| 作者姓名： | 屈彦玲 杨茜 秦伟 |
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| 作者单位： | 1. 石家庄铁路职业技术学院,河北,石家庄,050000
2. 石家庄铁道学院,河北,石家庄,050043 |
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| 摘 要： | 混凝土受到荷载作用时将出现脆性损伤.在细观层次上按损伤力学观点对混凝土的损伤破坏进行了研究和探讨,并对混凝土的细观损伤破坏机理进行了分析和试验研究.研究表明:混凝土集料和砂浆的界面上存在的结合裂缝是加载后混凝土损伤破坏的基础,混凝土的受力破坏是由内部开裂的微裂缝逐渐损伤发展的结果;数值模拟计算为混凝土细观力学性能的研究提供了新途径,展现出了良好的发展前景.
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| 关 键 词： | 混凝土 细观损伤 机理 数值模型 数值模拟 |
| 文章编号： | 1672-3953（2008）01-0006-05 |
| 收稿时间： | 2007-03-21 |
| 修稿时间： | 2007年3月21日 |
Study and Analysis of the Damage to and Destruction Mechanism of Concrete on the Meso-Level |
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| QU Yan-ling,YANG Qian,QIN Wei.Study and Analysis of the Damage to and Destruction Mechanism of Concrete on the Meso-Level[J].Traffic Engineering and Technology for National Defence,2008,6(1):6-9,13. |
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| Authors: | QU Yan-ling YANG Qian QIN Wei |
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| Institution: | QU Yan-ling1,YANG Qian2,QIN Wei1 (1.Shijiazhuang Vocational Institute of Railway Technology,Shijiazhuang050041,China,2.Shijiazhuang Railway Institute,Shijiazhuang050043,China) |
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| Abstract: | Concrete tends to be brittlely damaged under loads. Damage to concrete is studied and explored on the meso-level in the light of the damaging mechanics in the paper, with the damaging mechanism of concrete analyzed and experimentally studied on the meso-level. Studies show that the combined cracks in interface of aggregate and mortar are the basis of damage to concrete after being loaded, which result from the gradual development of internal micro-cracks. The numerical simulation and computation provide a new approach to research into the mechanical performance of concrete on the meso-level and open up good prospects for development. |
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| Keywords: | concrete damage on the meso-level mechanism numerical model numerical simulation |
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