| 高拱坝地震响应分析中的能量法 |
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| 引用本文： | 谢能刚,王德信. 高拱坝地震响应分析中的能量法[J]. 土木工程学报, 2003, 36(6): 85-87 |
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| 作者姓名： | 谢能刚 王德信 |
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| 作者单位： | 1. 安徽工业大学
2. 河海大学 |
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| 基金项目： | “九五”国家重点攻关基金(96-221-04-02-01) |
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| 摘 要： | 从结构动力反应的能量平衡方程出发,利用能量分析法计算高拱坝结构的地震响应。以小湾拱坝为算例,根据能量响应在时域内的变化特点,得出地震持续时间长会对结构造成严重危害性的结论;且拱坝结构在时域内最大能量响应值与所取模态截断阶数之间的关系表明,对于高拱坝这样的模态密集型系统,必须取较多数目的模态参与叠加,才能保证能量收敛的计算精度。
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| 关 键 词： | 拱坝 地震响应 能量法 模态截断 |
| 文章编号： | 1000-131X(2003)06-0085-03 |
| 修稿时间： | 2001-05-11 |
AN ENERGY METHOD FOR SEISMIC RESPONSE TO HIGH ARCH DAM |
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| Xie Nenggang Wang Dexin. AN ENERGY METHOD FOR SEISMIC RESPONSE TO HIGH ARCH DAM[J]. China Civil Engineering Journal, 2003, 36(6): 85-87 |
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| Authors: | Xie Nenggang Wang Dexin |
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| Affiliation: | Xie Nenggang Wang Dexin(Anhui University of Technology) (Hehai University) |
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| Abstract: | An energy method for the seismic response to high arch dam is proposed in the paper. It is started from the energy balance equation of the structural dynamics. An example is used for illustration; it is an arch dam in Xiaowan. The relations between the energy judgment indicator and the truncated number of dominance modes are obtained through the study. The energy response curve is shown that the energy value is altered in echelon. It is found that a large enough number of truncated modes is needed for the high arch dam. |
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| Keywords: | arch dam seismic response energy method truncated modes |
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