流体的几种简化模型在输水隧道抗震计算中的应用
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摘要
随着我国西部开发中水利水电工程建设的展开,有关软土中的输水隧道的抗震安全问题益见重要。这里重点研究了水体的几种简化模型在软土浅埋输水隧道的地震反应分析中的应用。分别采用水体的不同简化方法(等效密度、Housner模型、Westergaard公式)与水体假设为势流体时的流-固耦合的水固统一模型对一实际输水隧道进行地震反应分析。数值分析结果显示:不论采用水体的简化模型还是采用势流体的流-固耦合模型,其结果均相差不大。
With large scale development of West China,seismic safety problem of conveyance-water tunnel in soft soil is more and more important.The calculated seismic response of conveyance-water tunnel using fluid simplified models(equivalent density,Housner model,Westergaard formula) is in contrast with the analysis result by means of fluid-structure coupling model of potential model.Numerical results show that the fluid simplified model or fluid-structure coupling model of potential fluid,their results dis-crepancy is smaller.
With large scale development of West China,seismic safety problem of conveyance-water tunnel in soft soil is more and more important.The calculated seismic response of conveyance-water tunnel using fluid simplified models(equivalent density,Housner model,Westergaard formula) is in contrast with the analysis result by means of fluid-structure coupling model of potential model.Numerical results show that the fluid simplified model or fluid-structure coupling model of potential fluid,their results dis-crepancy is smaller.
引文
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[8]刘云贺,胡宝柱,闫建文,等.Housner模型在渡槽抗震计算中的适用性[J].水利学报,2002,9:94-99.
[9]M.F.Randolph.Axisymmetric Time-domain TransmittingBoundaries[J].Journal of Engineering Mechanics,1994,120(1):25-42.
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[11]陈健云,刘金云.地震作用下输水隧道的流-固耦合分析[J].岩土力学,2006,27(7):1077-1081.
[12]刘金云,陈健云.输水隧道二维地震反应分析[J].哈尔滨工业大学学报,2008,40(8):1297-1301.
[2]R.W.Clough.Reservoir interaction effects on the dynamicresponse of arch dams[R].Proceedings of China-USBilateral Workshop on Earthquake Engineering,1982,58-84.
[3]徐汉忠.动水压力的附加质量矩阵的边界元分析[J].河海大学学报,1994,22(2):102-106.
[4]徐汉忠,吴旭光,马贞信.计算动水压力附加质量的韦氏公式的扩充[J].河海大学学报,1997,25(5):120-122.
[5]陈厚群,候顺载,杨大伟.地震条件下拱坝库水相互作用的试验研究[J].水利学报,1989,10:29-39.
[6]Housner G.W.Dynamic Pressure on Accelerated FluidContainers[J].Bulletin of the Seismological Of America,1957,47(1):15-35.
[7]Housner G.W.The Dynamic Behavior of Water Tanks[J].Bulletin of the Seismological Of America,1963,53(2):381-387.
[8]刘云贺,胡宝柱,闫建文,等.Housner模型在渡槽抗震计算中的适用性[J].水利学报,2002,9:94-99.
[9]M.F.Randolph.Axisymmetric Time-domain TransmittingBoundaries[J].Journal of Engineering Mechanics,1994,120(1):25-42.
[10]Lysmer,J.and R.L.Kulemeyer.Finite Dynamic Model forInfinite Media[J].J.Engng.Mech.Div.ASCE,1969,95:759-877.
[11]陈健云,刘金云.地震作用下输水隧道的流-固耦合分析[J].岩土力学,2006,27(7):1077-1081.
[12]刘金云,陈健云.输水隧道二维地震反应分析[J].哈尔滨工业大学学报,2008,40(8):1297-1301.
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