| 试件形式对混凝土失稳韧度KIC^un的影响 |
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| 引用本文： | 周美伶 朱为玄. 试件形式对混凝土失稳韧度KIC^un的影响[J]. 河海大学学报(自然科学版), 2006, 34(6): 693-696 |
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| 作者姓名： | 周美伶 朱为玄 |
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| 作者单位： | 河海大学土木工程学院 江苏南京210098 |
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| 摘 要： | 为了确定用三点弯曲梁和楔入劈拉两种形式试件所测的混凝土失稳韧度KIunC是否相同以及有多大差异,从两种形式试件KIuCn的比值入手,对二者失稳韧度的关系进行了分析.结果表明,当试件的混凝土材料相同、高度也相同时,用三点弯曲梁和楔入劈拉试件测得的混凝土失稳韧度差异甚小.
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| 关 键 词： | 混凝土 失稳韧度 三点弯曲试验 楔入劈拉试验 |
| 文章编号： | 1000-1980（2006）06-0693-04 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-05-20 |
Influence of shape of specimens on unstable fracture toughness KIC^un of concrete |
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| ZHOU Mei-ling, ZHU Wei-xuan. Influence of shape of specimens on unstable fracture toughness KIC^un of concrete[J]. Journal of Hohai University (Natural Sciences ), 2006, 34(6): 693-696 |
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| Authors: | ZHOU Mei-ling ZHU Wei-xuan |
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| Affiliation: | College of Civil Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | Two kinds of specimens with different geometric shapes,i.e.three-point bending beam and wedge splitting specimen,are often used to test unstable fracture toughness K~(un)_(IC) of concrete.The study was performed to investigate the difference between unstable fracture toughness K~(un)_(IC) obtained by the two kinds of specimens,and their relationship was analyzed.The result shows that there is little difference between unstable fracture toughness tested by three-point bending beam and wedge splitting specimen with the same material and height. |
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| Keywords: | concrete unstable fracture toughness three-point bending test wedge splitting test |
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