| 辐射阻尼与峡谷自由场分布对拱坝动应力的影响 |
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| 引用本文： | 金峰,张楚汉,王光纶.辐射阻尼与峡谷自由场分布对拱坝动应力的影响[J].大连理工大学学报,1993(Z1). |
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| 作者姓名： | 金峰 张楚汉 王光纶 |
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| 作者单位： | 清华大学，清华大学，清华大学 北京100084，北京100084，北京10084 |
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| 摘 要： | 利用频域边界元－无限边界元与时域有限元在时域内耦合而建立的耦合 模型能够较好地模拟拱坝地基的辐射阻尼，并能考虑峡谷自由场幅值、相位 的空间分布对拱坝动力响应的影响．本文利用该模型分析了谐波作用下拉西 瓦拱坝的动应力，并通过比较计算，研究了上述因素的影响，得到了一些有实 际意义的结论．
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| 关 键 词： | 拱坝 应力分析 阻尼 地震波传播 |
Effects of radiation damping and spatial variation of free field on dynamic stresses of arch dams |
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| Jin Feng,Zhang Chuhan,Wang Guanglun.Effects of radiation damping and spatial variation of free field on dynamic stresses of arch dams[J].Journal of Dalian University of Technology,1993(Z1). |
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| Authors: | Jin Feng Zhang Chuhan Wang Guanglun |
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| Abstract: | A hybrid model presented by the authors, which couples frequency domain boundary elements (BE)-infinite boundary elements (IBE) with time domain finite elements (FE) in time domain, can simulate the radiation damping of the foundation of arch dams and can study the effects of spatial variation of freefield in canyons on dynamic response of arch dams. The dynamic stresses of Laxiwa arch dam under harmonic loadings are analyzed by utilizing this model. The above mentioned effects are studied by comparative computation. Some conclusions are drawn. |
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| Keywords: | arch dam stress analysis damping propagation of seismic wave |
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