基于比例边界有限元的拱坝动水压力计算
|
摘要
基于比例边界有限元法,采用Schur分解法计算了不同级别坝高、不同库底和岸坡吸收系数的拱坝各个方向单位地震加速度激励的数值,获得了坝面考虑库水可压缩性的总体动水压力,并分析了坝高对动水压力的影响。
Based on scaled boundary finite element method,Schur decomposition method is applied to calculate unit earthquake acceleration excited values of arch dam in each direction for different cases with various dam height levels and absorbability factors of reservoir bottoms and bank slope.Then the whole hydrodynamic pressure of dam facing is obtained by considering water compressibility of reservoir.Finally,the influence of dam height levels on hydrodynamic pressure is discussed in detail.
Based on scaled boundary finite element method,Schur decomposition method is applied to calculate unit earthquake acceleration excited values of arch dam in each direction for different cases with various dam height levels and absorbability factors of reservoir bottoms and bank slope.Then the whole hydrodynamic pressure of dam facing is obtained by considering water compressibility of reservoir.Finally,the influence of dam height levels on hydrodynamic pressure is discussed in detail.
引文
[1]Zienkiewica O C,Taylor R L.The Finite ElementMethod,4th edition[M].London:MoGraw-Hill,1989.
[2]Westergaard H M.Water Pressures on Dams dur-ing Earthquakes[J].Transactions(ASCE),1933,98:418-472.
[3]Fok K L,Chopra A K.Frequency Response Func-tions for Arch Dams:Hydrodynamic and Founda-tion Flexibility Effects[J].Earthquake Engineeringand Structural Dynamics,1986,14(5):769-795.
[4]Du Xiuli,Wang Jinting,Hung J K.Effects of Sedi-ment on the Dynamic Pressure of Water and Sedi-ment on Dams[J].Chinese Science Bulletin,2001,46(6):521-524.
[5]傅作新,陆瑞明.水库的库底条件和挡水结构的动水压力[J].水利学报,1987(5):28-35.
[6]杜修力,王进廷.动水压力及其对坝体地震反应影响的研究进展[J].水利学报,2001(7):13-21.
[7]Song Chongmin,Wolf J P.The Scaled Boundary Fi-nite-Element Method-Alias Consistent InfinitesimalFinite-Element Cell Method-For Elastodynamics[J].Computer Methods in Applied Mechanics andEngineering,1997,147:329-355.
[8]Wolf J P,Song Chongmin.The Scaled Boundary Fi-nite-Element Method-a Primer:Derivations[J].Com-puters and Structures,2000,78:191-210.
[9]Wolf J P,Song Chongmin.Finite-element Model-ling of Unbounded Media[M].John:Wiley&Sons,1996.
[10]Lin Gao,Du Jianguo,Hu Zhiqiang.Dynamic Dam-res-ervoir Interaction Analysis Including Effect of ReservoirBoundary Absorption[J].Science in China,Series E-Technological Sciences,2007,50(S1):1-10.
[11]杜建国,林皋,谢清粮.一种新的求解坝面动水压力的半解析方法[J].振动与冲击,2009,28(3):31-34,45.
[2]Westergaard H M.Water Pressures on Dams dur-ing Earthquakes[J].Transactions(ASCE),1933,98:418-472.
[3]Fok K L,Chopra A K.Frequency Response Func-tions for Arch Dams:Hydrodynamic and Founda-tion Flexibility Effects[J].Earthquake Engineeringand Structural Dynamics,1986,14(5):769-795.
[4]Du Xiuli,Wang Jinting,Hung J K.Effects of Sedi-ment on the Dynamic Pressure of Water and Sedi-ment on Dams[J].Chinese Science Bulletin,2001,46(6):521-524.
[5]傅作新,陆瑞明.水库的库底条件和挡水结构的动水压力[J].水利学报,1987(5):28-35.
[6]杜修力,王进廷.动水压力及其对坝体地震反应影响的研究进展[J].水利学报,2001(7):13-21.
[7]Song Chongmin,Wolf J P.The Scaled Boundary Fi-nite-Element Method-Alias Consistent InfinitesimalFinite-Element Cell Method-For Elastodynamics[J].Computer Methods in Applied Mechanics andEngineering,1997,147:329-355.
[8]Wolf J P,Song Chongmin.The Scaled Boundary Fi-nite-Element Method-a Primer:Derivations[J].Com-puters and Structures,2000,78:191-210.
[9]Wolf J P,Song Chongmin.Finite-element Model-ling of Unbounded Media[M].John:Wiley&Sons,1996.
[10]Lin Gao,Du Jianguo,Hu Zhiqiang.Dynamic Dam-res-ervoir Interaction Analysis Including Effect of ReservoirBoundary Absorption[J].Science in China,Series E-Technological Sciences,2007,50(S1):1-10.
[11]杜建国,林皋,谢清粮.一种新的求解坝面动水压力的半解析方法[J].振动与冲击,2009,28(3):31-34,45.
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