| 基于OpenSees的二维黏弹性边界单元开发及应用 |
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| 引用本文： | 高毅超,刘阳,梅真.基于OpenSees的二维黏弹性边界单元开发及应用[J].水利水电科技进展,2016,36(5):65-68. |
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| 作者姓名： | 高毅超 刘阳 梅真 |
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| 作者单位： | 华侨大学土木工程学院, 福建 厦门 361021; 福建省结构工程与防灾重点实验室, 福建 厦门 361021,华侨大学土木工程学院, 福建 厦门 361021; 福建省结构工程与防灾重点实验室, 福建 厦门 361021,华侨大学土木工程学院, 福建 厦门 361021; 福建省结构工程与防灾重点实验室, 福建 厦门 361021 |
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| 基金项目： | 国家自然科学基金(51409107,51378228)；中国博士后科学基金(2014M551832) |
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| 摘 要： | 基于有限元开源软件OpenSees开发了二维黏弹性边界单元VS2D2Bar,采用数值算例验证了该二维黏弹性边界单元在程序实现上的正确性,并将其应用于重力坝地震响应分析。重力坝算例分析结果表明:与固定边界无质量地基模型相比,采用黏弹性边界单元分析得到的坝体动力响应峰值大幅度减小,在重力坝的地震响应分析中必须考虑无限地基辐射阻尼效应的影响;OpenSees适用于重力坝地震响应分析,编程开发和调试工作量较小,易于在复杂水工结构的静动力分析研究中推广应用。
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| 关 键 词： | 黏弹性边界 地震响应 重力坝 OpenSees |
| 收稿时间： | 2015/8/23 0:00:00 |
Development of two-dimensional viscoelastic boundary element based on OpenSees and its application |
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| GAO Yichao,LIU Yang and MEI Zhen.Development of two-dimensional viscoelastic boundary element based on OpenSees and its application[J].Advances in Science and Technology of Water Resources,2016,36(5):65-68. |
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| Authors: | GAO Yichao LIU Yang and MEI Zhen |
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| Affiliation: | College of Civil Engineering, Huaqiao University, Xiamen 361021, China; Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Xiamen 361021, China,College of Civil Engineering, Huaqiao University, Xiamen 361021, China; Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Xiamen 361021, China and College of Civil Engineering, Huaqiao University, Xiamen 361021, China; Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Xiamen 361021, China |
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| Abstract: | A two-dimensional(2D)viscoelastic boundary element, VS2D2Bar, was developed based on the open source finite element package OpenSees. The applicability of the 2D viscoelastic boundary element was verified with a numerical example, and it was applied to the seismic response analysis of a gravity dam. Numerical results demonstrate that the peak dynamic response of the dam body according to the viscoelastic boundary element model greatly decreases in contrast to that obtained from the massless foundation model with fixed boundary conditions. As a result, the radiation damping effect of the infinite foundation should be considered in seismic response analysis of gravity dams. The results also show that OpenSees is applicable to the seismic response analysis of gravity dams. With a high efficiency in programming and debugging, OpenSees can be easily extended to the static and dynamic analysis of complex hydraulic structures. |
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| Keywords: | viscoelastic boundary seismic response gravity dam OpenSees |
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