| 混凝土坝裂纹扩展算法 |
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| 引用本文： | 王修信,潘家铮,夏颂佑. 混凝土坝裂纹扩展算法[J]. 宁波大学学报(理工版), 1989, 0(2) |
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| 作者姓名： | 王修信 潘家铮 夏颂佑 |
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| 作者单位： | 宁波大学土木系，能源部，河海大学 总工程师 |
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| 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,本方法计算结果与某些混凝土坝实测资料及模型试验结果吻合较好。
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| 关 键 词： | 裂纹扩展 应力强度因子 有限单元 |
ANALYSIS OF CRACK PROPAGATION IN CONCRETE DAMS |
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| Wang Xiuxin Ningbo University Pan Jiazheng Vice Chairman of CNCOLD Xia Songyou Hohai University. ANALYSIS OF CRACK PROPAGATION IN CONCRETE DAMS[J]. Journal of Ningbo University(Natural Science and Engineering Edition), 1989, 0(2) |
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| Authors: | Wang Xiuxin Ningbo University Pan Jiazheng Vice Chairman of CNCOLD Xia Songyou Hohai University |
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| Affiliation: | Wang Xiuxin Ningbo University Pan Jiazheng Vice Chairman of CNCOLD Xia Songyou Hohai University |
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| Abstract: | Crack propagation in concrete darns may be analysed with numerical or experimental methods.The tendency of crack due to external forces or thermal loads can be evaluated based on different criteria.In this paper the strain intensity factor criterion was used to predict the direction and initiation of crack development,and the fictitious crack element method was proposed to simulate the extending of crack.The results of finite element analysis are in good agreement with the experiment data. |
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| Keywords: | Crack propagation Stress intensity factor Finite element |
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