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| 多裂纹混凝土等效断裂模型研究 | |
| 引用本文： | 王学志,张小刚,宋玉普,吴智敏.多裂纹混凝土等效断裂模型研究[J].水力发电,2006,32(2):20-22,44. |
| 作者姓名： | 王学志 张小刚 宋玉普 吴智敏 |
| 作者单位： | 1. 大连理工大学海岸和近海工程国家重点实验室,辽宁,大连,116024;辽宁工学院,辽宁,锦州,121001 2. 深圳大学建筑与土木工程学院,广东,深圳,518060 3. 大连理工大学海岸和近海工程国家重点实验室,辽宁,大连,116024 |
| 基金项目： | 中国科学院资助项目;辽宁省教育厅资助项目 |
| 摘 要： | 根据混凝土材料断裂过程区存在尺寸效应这一特点,结合混凝土断裂韧度的尺寸效应规律,对混凝土有效裂缝扩展量进行了研究,得到反映尺寸效应规律的有效裂缝扩展量表达式,进而得到与试件尺寸相关的混凝土多裂纹等效断裂模型,使得多裂纹等效断裂模型更符合断裂过程区的尺寸效应规律。同时,通过与在实际工程中已用的其他模型的计算结果相比较,得出此模型比较可靠的结论。 |
| 关 键 词： | 混凝土 多裂纹 等效断裂模型 有效裂缝扩展量 尺寸效应 |
| 文章编号： | 0559-9342（2006）02-0020-03 |
| 收稿时间： | 2005-09-01 |
| 修稿时间： | 2005-09-01 |
Study on Effective Crack Model of Concrete with Multi-crack |
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| Wang Xuezhi,Zhang Xiaogang,Song Yupu,Wu Zhimin.Study on Effective Crack Model of Concrete with Multi-crack[J].Water Power,2006,32(2):20-22,44. | |
| Authors: | Wang Xuezhi Zhang Xiaogang Song Yupu Wu Zhimin |
| Affiliation: | 1 .State Key Laboratory of Coastal and Offshore Engineering. Dalian University of Technology, Dalian Liaoning 116024; 2.Liaoning Institute of Technology, jinzhou Liaoning 121001; 3.College of Architecture and Civil Engineering. Shenzhen University, Shcnzhen Guangdong 518060 |
| Abstract: | According to character of procession of concrete material having size effect rule,effective crack propagation of concrete was investigated with size effect rule of fracture toughness of concrete,formula of effective crack propagation was obtained which reflected size effect rule,and then effective crack model of multi-crack concrete was obtained which was relative with dimension of the specimen.It made the effective crack model of multi-crack be suitable to size effect rule of procession of concrete material.At the same time,It was verified that the model was credibility via comparing with other models' results. |
| Keywords: | concrete multi-crack effective crack model effective crack propagation size effect |
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