考虑桩-土动力相互作用的渡槽结构水平地震响应分析
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摘要
以Housner流-固耦合模型和Penzien桩-土相互作用模型为基础,建立一种同时考虑流-固耦合与桩-土相互作用的渡槽结构简化计算模型,并给出其计算参数。该计算模型分为等价体系和自由场体系,并采用自由场输入。推导同时考虑弯曲变形和剪切变形时的群桩刚度矩阵,采用分别计算各子结构阻尼的方式来考虑整个结构的阻尼,并采用等效线性化原理来考虑土体的非线性。以某渡槽为例,采用该模型对其进行分析,并与刚性基础模型对比。计算结果表明,两种情况下的自振特性和水平地震响应均有较大差别,在渡槽抗震研究与设计中不能忽略桩-土相互作用。同时采用该计算模型对拟动力试验模型进行分析,并与试验结果比较,二者基本一致,说明计算模型的有效性。
Based on Housner fluid-structure coupling model and Penzien pier-soil interaction model,a simplified model of an aqueduct was developed with fluid-structure coupling and pier-soil interaction.The model includes equivalent system and free field.Stiffness matrix of the piles was given,including bending and shear deformation effects.The damping of the entire structure was calculated using the damping of each of the sub-structures.Equivalent linearization principle was employed to deal with the nonlinear characteristics of the soil.Analysis was carried out,and comparison with the rigid foundation model performed.The results of these two models were significantly different in free vibration characteristics and horizontal seismic responses.The results were in good agreement with experimental data.
Based on Housner fluid-structure coupling model and Penzien pier-soil interaction model,a simplified model of an aqueduct was developed with fluid-structure coupling and pier-soil interaction.The model includes equivalent system and free field.Stiffness matrix of the piles was given,including bending and shear deformation effects.The damping of the entire structure was calculated using the damping of each of the sub-structures.Equivalent linearization principle was employed to deal with the nonlinear characteristics of the soil.Analysis was carried out,and comparison with the rigid foundation model performed.The results of these two models were significantly different in free vibration characteristics and horizontal seismic responses.The results were in good agreement with experimental data.
引文
[1]张俊发,刘云贺,王颖,等.渡槽-水体系统的地震反应分析[J].西安理工大学学报,1999,15(4):46-51(Zhang Junfa,Liu Yunhe,Wang Ying.A seismicresponse analysis of water-aqueduct-pier system[J].Journal of Xi’an University of Technology,1999,15(4):46-51(in Chinese))
[2]李遇春,楼梦麟.强震下流体对渡槽槽身的作用[J].水利学报,2000(3):46-52(Li Yuchun,Lou Menglin.Action of fluid on aqueduct body during strong earthquake[J].Journal of Hydraulic Engineering,2000(3):46-52(in Chinese))
[3]徐建国,陈淮,王博.渡槽结构考虑流固耦合的横向地震响应研究[J].工程力学,2004,21(6):197-202(XuJianguo,Chen Huai,Wang Bo.Transverse seismicresponse of aqueducts with fluid-structure coupling[J].Engineering Mechanics,2004,21(6):197-202(inChinese))
[4]徐建国,陈淮,王博,等.考虑流固动力相互作用的大型渡槽地震响应研究[J].土木工程学报,2005,38(8):68-73(Xu Jianguo,Chen Huai,Wang Bo,et al.Seismic response of large-scale aqueduct with fluid-structure coupling[J].China Civil Engineering Journal,2005,38(8):68-73(in Chinese))
[5]吴轶,莫海鸿,杨春.大型渡槽-水耦合体系动力特性分析[J].华南理工大学学报:自然科学版,2004,32(9):76-81(Wu Yi,Mo Haihong,Yang Chun.Analysisof the dynamic characteristics of large-scale aqueduct-watercoupling systems[J].Journal of South China University ofTechnology:Natural Science Edition,2004,32(9):76-81(in Chinese))
[6]吴轶,莫海鸿,杨春.排架-渡槽-水三维耦合体系地震响应分析[J].水利学报,2005,36(3):280-285(WuYi,Mo Haihong,Yang Chun.Seismic response of frame-supported large rectangular aqueduct-water 3-D couplingsystem[J].Journal of Hydraulic Engineering,2005,36(3):280-285(in Chinese))
[7]王博,徐建国.大型渡槽考虑土-结构相互作用的动力分析[J].世界地震工程,2000,16(3):110-115(Wang Bo,Xu Jianguo.Dynamic analysis of largeaqueducts with soil-structure interaction[J].WorldInformation on Earthquake Engineering,2000,16(3):110-115(in Chinese))
[8]刘云贺,张伯艳,陈厚群.南水北调中线穿黄渡槽工程抗震分析[J].水利水电技术,2004,35(5):49-51(Liu Yunhe,Zhang Boyan,Chen Houqun.Aseimaticanalysis of aqueduct structure for south-to-north watertransfer project[J].Water Resources and HydropowerEngineering,2004,35(5):49-51(in Chinese))
[9]杨世浩,李正农,郑明燕.南水北调工程洺河渡槽耦合动力分析[J].湖南大学学报:自然科学版,2007,34(12):15-19(Yang Shihao,Li Zhengnong,ZhengMingyan.Coupled aseismatic dynamic analysis of Mingheaqueduct in south-to-north water transfer project[J].Journal of Hunan University:Natural Sciences Edition,2007,34(12):15-19(in Chinese))
[10]Penzien J,Scheffey C F,Parmelee R A.Seismic analysisof bridges on long piles[J].Journal of the EngineeringMechanics Division,1964,90(EM3):223-254
[11]Housner G W.Dynamic pressure on accelerated fluidcontainers[J].Bulletin of Seismological Society ofAmerica,1957,47(1):15-35
[12]李永梅,孙国富.王松涛,等.桩-土-杆系结构的动力相互作用[J].建筑结构学报,2002,23(1):75-81(LiYongmei,Sun Guofu,Wang Songtao,et al.Dynamicinteraction of pile-soil-frame structure[J].Journal ofBuilding Structures,2002,23(1):75-81(in Chinese))
[13]严士超,杜一平.电视塔-桩-土相互作用地震反应分析[J].土木工程学报,1991,24(3):71-79(YanShichao,Du Yiping.Seismic response analysis of TVtower-pile-soil interaction system[J].China CivilEngineering Journal,1991,24(3):71-79(in Chinese))
[14]Chopra A K.结构动力学-理论及其在地震工程中的应用[D].第二版.北京:高等教育出版社,2007
[15]曹资,王松涛.现代抗震设计方法[M].北京:中国建筑工业出版社,1997
[16]Hardin B O,Drnevich VP.Shear modulus and damping insoils design equations and curves[J].Joumal of SoilMechanics and Foundation Division,1972,98(SM7):667-692
[2]李遇春,楼梦麟.强震下流体对渡槽槽身的作用[J].水利学报,2000(3):46-52(Li Yuchun,Lou Menglin.Action of fluid on aqueduct body during strong earthquake[J].Journal of Hydraulic Engineering,2000(3):46-52(in Chinese))
[3]徐建国,陈淮,王博.渡槽结构考虑流固耦合的横向地震响应研究[J].工程力学,2004,21(6):197-202(XuJianguo,Chen Huai,Wang Bo.Transverse seismicresponse of aqueducts with fluid-structure coupling[J].Engineering Mechanics,2004,21(6):197-202(inChinese))
[4]徐建国,陈淮,王博,等.考虑流固动力相互作用的大型渡槽地震响应研究[J].土木工程学报,2005,38(8):68-73(Xu Jianguo,Chen Huai,Wang Bo,et al.Seismic response of large-scale aqueduct with fluid-structure coupling[J].China Civil Engineering Journal,2005,38(8):68-73(in Chinese))
[5]吴轶,莫海鸿,杨春.大型渡槽-水耦合体系动力特性分析[J].华南理工大学学报:自然科学版,2004,32(9):76-81(Wu Yi,Mo Haihong,Yang Chun.Analysisof the dynamic characteristics of large-scale aqueduct-watercoupling systems[J].Journal of South China University ofTechnology:Natural Science Edition,2004,32(9):76-81(in Chinese))
[6]吴轶,莫海鸿,杨春.排架-渡槽-水三维耦合体系地震响应分析[J].水利学报,2005,36(3):280-285(WuYi,Mo Haihong,Yang Chun.Seismic response of frame-supported large rectangular aqueduct-water 3-D couplingsystem[J].Journal of Hydraulic Engineering,2005,36(3):280-285(in Chinese))
[7]王博,徐建国.大型渡槽考虑土-结构相互作用的动力分析[J].世界地震工程,2000,16(3):110-115(Wang Bo,Xu Jianguo.Dynamic analysis of largeaqueducts with soil-structure interaction[J].WorldInformation on Earthquake Engineering,2000,16(3):110-115(in Chinese))
[8]刘云贺,张伯艳,陈厚群.南水北调中线穿黄渡槽工程抗震分析[J].水利水电技术,2004,35(5):49-51(Liu Yunhe,Zhang Boyan,Chen Houqun.Aseimaticanalysis of aqueduct structure for south-to-north watertransfer project[J].Water Resources and HydropowerEngineering,2004,35(5):49-51(in Chinese))
[9]杨世浩,李正农,郑明燕.南水北调工程洺河渡槽耦合动力分析[J].湖南大学学报:自然科学版,2007,34(12):15-19(Yang Shihao,Li Zhengnong,ZhengMingyan.Coupled aseismatic dynamic analysis of Mingheaqueduct in south-to-north water transfer project[J].Journal of Hunan University:Natural Sciences Edition,2007,34(12):15-19(in Chinese))
[10]Penzien J,Scheffey C F,Parmelee R A.Seismic analysisof bridges on long piles[J].Journal of the EngineeringMechanics Division,1964,90(EM3):223-254
[11]Housner G W.Dynamic pressure on accelerated fluidcontainers[J].Bulletin of Seismological Society ofAmerica,1957,47(1):15-35
[12]李永梅,孙国富.王松涛,等.桩-土-杆系结构的动力相互作用[J].建筑结构学报,2002,23(1):75-81(LiYongmei,Sun Guofu,Wang Songtao,et al.Dynamicinteraction of pile-soil-frame structure[J].Journal ofBuilding Structures,2002,23(1):75-81(in Chinese))
[13]严士超,杜一平.电视塔-桩-土相互作用地震反应分析[J].土木工程学报,1991,24(3):71-79(YanShichao,Du Yiping.Seismic response analysis of TVtower-pile-soil interaction system[J].China CivilEngineering Journal,1991,24(3):71-79(in Chinese))
[14]Chopra A K.结构动力学-理论及其在地震工程中的应用[D].第二版.北京:高等教育出版社,2007
[15]曹资,王松涛.现代抗震设计方法[M].北京:中国建筑工业出版社,1997
[16]Hardin B O,Drnevich VP.Shear modulus and damping insoils design equations and curves[J].Joumal of SoilMechanics and Foundation Division,1972,98(SM7):667-692
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