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| 重力坝坝踵断裂扩展模拟方法 | |
| 引用本文： | 王修信,潘家铮,夏颂佑.重力坝坝踵断裂扩展模拟方法[J].河海大学学报(自然科学版),1991(5). |
| 作者姓名： | 王修信 潘家铮 夏颂佑 |
| 作者单位： | 宁波大学土木系，能源部总工程师室，河海大学水利水电科学研究所 |
| 摘 要： | 混凝土建筑物中的裂纹扩展追踪计算是确定结构安全度的重要手段.本文提出用虚拟裂纹单元及断裂力学准则(应变强度因子)追踪和模拟裂缝初始断裂、扩展并最终导致破坏的过程,给出一条逐段扩展的裂纹线.本方法计算结果与混凝土坝实测资料及模型试验结果吻合较好. |
| 关 键 词： | 裂纹扩展 应力强度因子 有限单元 |
Analogue of Crack Development in Concrete Dams |
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| Wang Xiuxin Dept. of Civil Engineering,Ningbo Univ. Pan Jiazheng General Engineer Office of Ministry of Energy Sources Xia Songyou The Res. Inst. of Water Resources and Hydro-eletric Power,Hohai Univ..Analogue of Crack Development in Concrete Dams[J].Journal of Hohai University (Natural Sciences ),1991(5). | |
| Authors: | Wang Xiuxin Dept of Civil Engineering Ningbo Univ Pan Jiazheng General Engineer Office of Ministry of Energy Sources Xia Songyou The Res Inst of Water Resources and Hydro-eletric Power Hohai Univ |
| Abstract: | Crack propagation in concrete structures is discussed for the evaluation of safety degree or limit load of the structures. The strain intensity factor criterion is used to predict the direction and initiation of crack propagation, and the fictitious crack element method is proposed to simulate the extending of cracks. The results of the finite element analysis are in good agreement with experimental data. |
| Keywords: | crack propagation stress intensity factor finite element |
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