| 张国新,周立本,朱伯芳,徐润明.五强溪船闸裂缝的流形元模拟[J].水利学报,2003,34(11):0037-0042 |
| 五强溪船闸裂缝的流形元模拟 |
| Simulation of cracking with manifold method for Wuqiangxi shiplock |
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| DOI： |
| 中文关键词: 流形元 裂缝 船闸 渗流 大变形 |
| 英文关键词: manifold crack shiplock seepage excessive displacement |
| 基金项目: |
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| 摘要点击次数: 2008 |
| 全文下载次数: 115 |
| 中文摘要: |
| 对流形元法进行了扩展，开发了考虑裂隙渗流和变形耦合作用、用断裂力学法模拟离散裂缝的扩展及用杆单元模拟钢筋作用的流形元法，用以模拟钢筋混凝土结构在水压荷载作用下的破坏过程。用扩展后的软件模拟分析了五强溪船闸闸墙的大变形问题。模拟结果表明，五强溪船闸闸墙的超标变形是由于闸室底部大量纵深裂缝所致，缝内渗透压力在裂缝扩展中起了重要作用。建议船闸提高水位运行前应做止水或加固处理。 |
| 英文摘要: |
| A lot of cracks were found in Wuqiangxi shiplock after put into operation. In this paper,the stress and deformation subject to the change in temperature and water pressure are calculated and the cracking is simulated by manifold method.In the calculation,bar elements are used to represent the reinforcing bars and discrete cracking model is used for simulation of crack initiation and development.The results show that the excessive displacement of the chamber floor is owing to the cracking and the seepage pressure plays an important role in development of cracks. |
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