| 基于比例边界有限元方法的拱坝子结构分区形式研究 |
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| 引用本文： | 薛冰寒,,,方宏远,,,王复明,,,胡志强,陈建国.基于比例边界有限元方法的拱坝子结构分区形式研究[J].世界地震工程,2019,35(4):011-17. |
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| 作者姓名： | 薛冰寒 方宏远 王复明 胡志强 陈建国 |
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| 作者单位： | 1. 郑州大学 水利与环境学院, 郑州 450001;2. 重大基础设施检测修复技术国家地方联合工程实验室, 河南 郑州 450001;3. 水利与交通基础设施安全防护河南省协同创新中心, 河南 郑州 450001;4. 大连理工大学 建设工程学部水利工程学院工程抗震研究所, 辽宁 大连 116024;5. 广西水利科学研究院 水工程材料与结构重点实验室, 广西 南宁 530023 |
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| 摘 要： | 比例边界有限元方法是一种半解析的数值计算方法，具有降维、网格灵活、严格模拟无限域和无需基本解等特点。比例边界有限元方法的基本理论是在整体坐标与局部坐标的比例边界转换基础之上建立的，相似中心的选取是否合理对分析计算具有重要的影响，导致在模拟拱坝这种不规则的空间壳体结构时，具有一定的局限性。采用子结构方法，将坝体分为若干满足相似性要求的区域可解决上述问题，以某拱坝为例给出了合理的坝体子结构分区形式，验证了子结构方法的精确性，为建立基于比例边界有限元方法的坝体-库水-地基系统的计算模型奠定了基础。
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| 关 键 词： | 比例边界有限元 子结构法 拱坝 相似中心 |
Study of sub-structure division of arch dam based on scaled boundary finite element method |
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| XUE Binghan,,' target="_blank" rel="external">,FANG Hongyuan,,' target="_blank" rel="external">,WANG Fuming,,' target="_blank" rel="external">,HU Zhiqiang,CHEN Jianguo.Study of sub-structure division of arch dam based on scaled boundary finite element method[J].World Information On Earthquake Engineering,2019,35(4):011-17. |
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| Authors: | XUE Binghan " target="_blank">' target="_blank" rel="external"> FANG Hongyuan " target="_blank">' target="_blank" rel="external"> WANG Fuming " target="_blank">' target="_blank" rel="external"> HU Zhiqiang CHEN Jianguo |
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| Abstract: | The scaled boundary finite element method (SBFEM) as a semi-analytical numerical method has been used in many fields. SBFEM has the following advantages:reducing the spatial dimensions by one, rigorously modelling the unbounded domain and involving no fundamental solution. However, owing to the requirement of scaling inherently, the SBFEM cannot be directly applied to the analysis of arch dams which belong to irregular shell structure. This limitation can be overcome by employing the sub-structure method to subdivide the arch dam into several sub-structures which satisfy the scaling requirement. An example of the dynamic analysis of an arch dam is presented to verify the effectiveness of the SBFEM sub-structure method. The proposed sub-structure division method is helpful to establish the calculating model of the dam body-reservoir-foundation system based on the scaled boundary finite element method. |
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| Keywords: | scaled boundary finite element method sub-structure method arch dam scaling center |
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