拱坝河谷自由场反应
|
摘要
采用一种简单的模型计算拱坝河谷平面内反应， 使地基的动力刚度不但容易确定， 而且自由场输入也很简单． 对 Ｐ 和 Ｓ Ｖ 波在不同入射情况的河谷反应进行了频域求解． 结果表明： 这种计算模型能有效地反应河谷两岸山体的放大效应、幅差和相差． 程序的计算过程简单， 便于工程应用．
A reasonable procedure is proposed to calculate the free response of arch dam in canyon. It makes the determination of dynamic stiffness of the foundation easier and the input of the free field is very simple. Response to different incident conditions of P and SV waves are analyzed in frequency domain. The calculation results show that this approach can effectively reflect the magnifying effect of the canyon banks, amplitude difference and phase difference. The procedure is applied to engineering practive.
A reasonable procedure is proposed to calculate the free response of arch dam in canyon. It makes the determination of dynamic stiffness of the foundation easier and the input of the free field is very simple. Response to different incident conditions of P and SV waves are analyzed in frequency domain. The calculation results show that this approach can effectively reflect the magnifying effect of the canyon banks, amplitude difference and phase difference. The procedure is applied to engineering practive.
引文
1 中美拱坝抗震学术讨论会论文集. 北京: 万国学术出版社, 1987 .
2 Earthquake Engineering for Concrete Dames : Design , Performance and Research Needs . National Academy Press , Washington , D. C. 1990
3 Clough R W , Penzien J. Dynamics of structures. Mc Graw Hill, 1975 .
4 Nowak P S, Hall J F. Arch dam response to nonuniform seismic input . J. of Engrg . Mech . A S C E, 1990 , 116(1) .
5 潞袢? 侯顺载, 王 均. 拱坝自由场地震输入和反应. 地震工程与工程振动, 1990 , 10 (2) .
6 赵崇斌, 张楚汉, 张光斗. 用映射动力无限元求解地基中三维波动问题. 中国科学 ( A) , 1988 , (10) .
7 林皋, 关飞. 用边界元法研究地震波在不规则地形处的散射问题. 大连理工大学学报, 1990 , 30 (2) .
8 Dasgupta G, Chopra K. Dynamic stiffness matricesfor viscoelastic half planes. J.of Engrg . Mech . A S C E1979 , 105(5) .
9 Wolf J P. Dynamic soilstructure interaction . Prentice Hall, 1985 .
2 Earthquake Engineering for Concrete Dames : Design , Performance and Research Needs . National Academy Press , Washington , D. C. 1990
3 Clough R W , Penzien J. Dynamics of structures. Mc Graw Hill, 1975 .
4 Nowak P S, Hall J F. Arch dam response to nonuniform seismic input . J. of Engrg . Mech . A S C E, 1990 , 116(1) .
5 潞袢? 侯顺载, 王 均. 拱坝自由场地震输入和反应. 地震工程与工程振动, 1990 , 10 (2) .
6 赵崇斌, 张楚汉, 张光斗. 用映射动力无限元求解地基中三维波动问题. 中国科学 ( A) , 1988 , (10) .
7 林皋, 关飞. 用边界元法研究地震波在不规则地形处的散射问题. 大连理工大学学报, 1990 , 30 (2) .
8 Dasgupta G, Chopra K. Dynamic stiffness matricesfor viscoelastic half planes. J.of Engrg . Mech . A S C E1979 , 105(5) .
9 Wolf J P. Dynamic soilstructure interaction . Prentice Hall, 1985 .
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心