考虑库水可压缩性的高拱坝动力特性分析
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摘要
结合实际工程给出了考虑库水可压缩性时高拱坝动力特性的数值求解方案。计算结果表明,库水的可压缩性对坝体的自振频率、振型参与系数和振型等动力特性均有较大的影响。考虑库水可压缩性之后,计算坝体动力特性时计算量略有增大,建议采用可压缩库水模型求解高拱坝的动力特性。
Combining with engineering practice,the effects of water compressibility on dynamic characteristic of high arch dams are studied.The compressible reservoir models and the numerical schemes are given for the dynamic characteristic analysis of high arch dams.The results show that the dynamic characteristics,such as natural frequency,mode and mode shapes,obtained from different reservoir models are quite different due to the water compressibility. The compressible model is recommended for the dynamic characteristic analysis of high arch dams since the computational complexity is almost same with incompressible model.
Combining with engineering practice,the effects of water compressibility on dynamic characteristic of high arch dams are studied.The compressible reservoir models and the numerical schemes are given for the dynamic characteristic analysis of high arch dams.The results show that the dynamic characteristics,such as natural frequency,mode and mode shapes,obtained from different reservoir models are quite different due to the water compressibility. The compressible model is recommended for the dynamic characteristic analysis of high arch dams since the computational complexity is almost same with incompressible model.
引文
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[3]刘浩吾.混凝土坝动水压力与库水可压缩性效应[J].水利水电科技进展,2002,22(2):10-13
[4]Clough R W,Chang K T,Chen H Q,et al.DynamicInteraction Effects in Arch Dams[R].University ofCalifornia,Berkeley,Earthquake Engineering ResearchCenter Peport,No.UCB/EERC-85/11,1985:1-52
[5]杜修力,王进廷.拱坝—可压缩库水—地基地震波动反应分析方法[J].水利学报,2002(6):83-90
[6]石建军,孙冰,周元德,等.不同横缝接触与库水模型对拱坝动力反应的影响[J].水力发电学报,2005,24(3):34-38
[7]水电部成都勘测设计院.混凝土拱坝设计规范(SL282-2003)[S].北京:中国水利水电出版社,2003.
[8]迟世春,林皋.混凝土面板堆石坝与库水动力相互作用研究[J].大连理工大学学报,1998,38(6):718-723
[9]Clough R W.Reservoir Interaction Effects on theDynamic Response of Arch Dams[J].Proceeding ofChina-US Bilateral Workshop on Earthquake Engi-neering,1982:58-84
[10]赵兰浩.考虑坝体—库水—地基相互作用的有横缝拱坝地震响应分析[D].南京:河海大学,2006.
[11]王勖成.有限单元法[M].北京:清华大学出版社,2003.
[2]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
[3]刘浩吾.混凝土坝动水压力与库水可压缩性效应[J].水利水电科技进展,2002,22(2):10-13
[4]Clough R W,Chang K T,Chen H Q,et al.DynamicInteraction Effects in Arch Dams[R].University ofCalifornia,Berkeley,Earthquake Engineering ResearchCenter Peport,No.UCB/EERC-85/11,1985:1-52
[5]杜修力,王进廷.拱坝—可压缩库水—地基地震波动反应分析方法[J].水利学报,2002(6):83-90
[6]石建军,孙冰,周元德,等.不同横缝接触与库水模型对拱坝动力反应的影响[J].水力发电学报,2005,24(3):34-38
[7]水电部成都勘测设计院.混凝土拱坝设计规范(SL282-2003)[S].北京:中国水利水电出版社,2003.
[8]迟世春,林皋.混凝土面板堆石坝与库水动力相互作用研究[J].大连理工大学学报,1998,38(6):718-723
[9]Clough R W.Reservoir Interaction Effects on theDynamic Response of Arch Dams[J].Proceeding ofChina-US Bilateral Workshop on Earthquake Engi-neering,1982:58-84
[10]赵兰浩.考虑坝体—库水—地基相互作用的有横缝拱坝地震响应分析[D].南京:河海大学,2006.
[11]王勖成.有限单元法[M].北京:清华大学出版社,2003.
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