地震作用下埋地管道横向振动分析
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摘要
将埋地管道的横向振动偏微分方程和轴向振动偏微分方程转化为动力学方程的基本形式,将地震激励按照随机波和简谐波分别输入到运动方程中。利用弹性时程分析法,对管道单元进行动力时程分析并编制程序,得到管道中点的位移响应和加速度响应。考虑了土参数、管道参数、地震动参数、支承距离等因素对管道响应的影响,得到土的特性对管道的位移响应和加速度响应有一定的影响,随着土质由软变硬,管道的位移响应越小。
The differential equations of transverse vibration and axial vibration were translated into basic form of dynamics equations,considering earthquake excitation as random wave and harmonic wave in the dynamic equations.Utilizing the method of the elasticity time-travel analysis to program,the response of the displacement and acceleration at the midpoint were obtained,moreover the pipe element was analyzed.The soil parameter,pipe parameter,earthquake dynamic parameter and the supporting distance were considered as the influence of pipe response.The characteristic of the soil had an influence on response of velocity and acceleration.Along with soil from soft to hard,the response of velocity became smaller.In the same soil,the earthquake damage rate of the piping became increaser along with earthquake intensity increasing.
The differential equations of transverse vibration and axial vibration were translated into basic form of dynamics equations,considering earthquake excitation as random wave and harmonic wave in the dynamic equations.Utilizing the method of the elasticity time-travel analysis to program,the response of the displacement and acceleration at the midpoint were obtained,moreover the pipe element was analyzed.The soil parameter,pipe parameter,earthquake dynamic parameter and the supporting distance were considered as the influence of pipe response.The characteristic of the soil had an influence on response of velocity and acceleration.Along with soil from soft to hard,the response of velocity became smaller.In the same soil,the earthquake damage rate of the piping became increaser along with earthquake intensity increasing.
引文
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[23]Takada S,Tanabe K.Three Dimensional Seismic Response Analy-sis of Buried Continuous Jointed Pipelines[J].Journal of Pressure Vessel Technology,1987,109(1):35-42.
[2]约瑟夫.E.波勒斯.基础工程分析与设计(5版)[M].北京:中国建筑工业出版社,2004.
[3]中国振动工程学会,土动力学专业委员会.土动力学工程应用实例与分析[M].北京:中国建筑工业出版社,1998.
[4]刘川顺.水利工程地基处理[M].武汉:武汉大学出版社,2004.
[5]欧珠光.工程振动[M].武汉:武汉大学出版社,2003.
[6]徐建.建筑振动工程手册[M].北京:中国建筑工业出版社,2000.
[7]滕振超.跨越管道地震响应分析及基于性能的抗震设计[D].大庆:大庆石油学院,2003.
[8]高惠瑛.基于GIS供水系统地震反应分析[D].哈尔滨:中国地震局工程力学研究所,2000.
[9]刘红丽.长输油气管线工程抗震综合研究[D].哈尔滨:中国地震局工程力学研究所,2004.
[10]张素灵,许建东,曹华明,等.地震断层作用对地下输油(气)管道破坏的分析[J].地震地质,2001,23(3):432-438.
[11]郭海燕,孟凡顺.竖向地震作用下充满液体管道的地震反应分析[J].振动工程学报,1998,11(2):165-168.
[12]黄强兵,彭建兵,杨天亮.埋地管道在地震波作用下的抗震性能分析[J].工程勘察,2004,(3):64-68.
[13]薛景宏,崔大勇,王振,等.埋地输液管道横向地震激励下的动力响应[J].大庆石油学院学报,2000,24(3):105-110.
[14]克拉夫R W,彭津J.结构动力学[M].北京:科学出版社,1981.
[15]龙驭球,包世华.结构力学教程(下册)[M].北京:高等教育出版社,1998:51-53.
[16]徐赵东,郭迎庆.MATLAB语言在建筑抗震工程中的应用[M].北京:科学出版社,2004:166-175.
[17]Hindy A,Novak M.Earthquake Response of Under Ground Pipe-line[J].Journal of Earthquake Engineering Structure Dynamic,1979,7(5):451-476.
[18]Datta S K,Shah A H.Dynamic Behavior of Buried Pipe in Aseis-mic Environment[J].Journal of Applied Mechanics,1982,49(1):141-149.
[19]O'leary P M,Datta S K.Dynamics of Buried Pipelines[J].Soil Dy-namics and Earthquake Engineering,1985,4(3):32-38.
[20]Datta S K.Dynamic Response of Pipelines to Moving Loads[A].Proceedings of8th WCEE,New Delphi,1984.
[21]Nelson I,Weidlinger P.Dynamic Seismic Analysis of Long Segmen-ted Lifeline[J].Journal of Pressure Vessel Technology,1979,101(1):10-20.
[22]Muleski G E,Ariman T.A Shell Model for Buried Pipes in Earth-quakes[J].Journal of Soil Dynamic Earthquake Engineering,1985,4(1):43-51.
[23]Takada S,Tanabe K.Three Dimensional Seismic Response Analy-sis of Buried Continuous Jointed Pipelines[J].Journal of Pressure Vessel Technology,1987,109(1):35-42.
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