跨断层埋地管线-土接触非连续变形分析
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摘要
跨断层埋地管线系统主要由管线及其周围土体两种不同介质组成,具有分析介质不连续性特性。为实现对管-土接触介质的不连续性分析,采用非连续变形分析与有限元分析相结合的方法,将跨逆断层埋地管线系统从实际工作状态中取出一部分作为分析对象。利用有限元分析方法对管线及其周围土体进行网格划分;而管-土之间的相互作用,利用非连续变形分析中的不连续介质接触处理方法实现模拟。通过模型的数值分析,研究了逆断层作用下管-土之间的非连续变形相互作用状态,验证了利用非连续变形分析与有限元方法相结合解决埋地管线-土接触的可行性和有效性,为管-土相互作用分析提供了新的研究思路和研究方法。
The buried pipeline subject to reverse-fault is studied,which mainly composite with two different materials,buried pipeline and the surrounding soil.The buried pipeline subject to reverse-fault is divided from its actual working state and the analysis system is discontinuous medium.The discontinuous deformation analysis(DDA) coupled with finite element method(FEM) is proposed.The pipe is dispersed with beam elements,the soil discretized with iso-parameter elements based on FEM.And the pipe-soil interaction is described using DDA.According to the analysis model,the pipe-soil contact status is studied.The results verify the feasibility and effectiveness of using DDA coupled with FEM to study buried pipeline.The study provides a new approach and new technique for studying pipe-soil discontinuous medium interaction.
The buried pipeline subject to reverse-fault is studied,which mainly composite with two different materials,buried pipeline and the surrounding soil.The buried pipeline subject to reverse-fault is divided from its actual working state and the analysis system is discontinuous medium.The discontinuous deformation analysis(DDA) coupled with finite element method(FEM) is proposed.The pipe is dispersed with beam elements,the soil discretized with iso-parameter elements based on FEM.And the pipe-soil interaction is described using DDA.According to the analysis model,the pipe-soil contact status is studied.The results verify the feasibility and effectiveness of using DDA coupled with FEM to study buried pipeline.The study provides a new approach and new technique for studying pipe-soil discontinuous medium interaction.
引文
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[7]赵雷,李小军,赵纪生,等.断层上覆土层断裂对埋地管线的影响[J].应用基础与工程科学学报,2009,17(6):891-898.
[8]薛景宏,吕培培,张超.埋地管道断层错动反应分析[J].科学技术与工程,2009,19(3):677-680.
[9]金浏,李鸿晶.穿越逆冲断层的埋地管道非线性反应分析[J].防灾减灾工程学报,2010,30(2):130-134.
[10]石根华.数值流形方法与非连续变形分析[M].裴觉民译.北京:清华大学出版社,1997.
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[13]刘君.三维非连续变形分析与有限元耦合算法研究[D].大连:大连理工大学,2001.
[2]KENNEDY R P,DARROW A W,WILLIAMSON R A.Fault movement effects on buried oil pipeline[J].Journal of the Transporta-tion Engineering Division,ASCE,1977,103(5):617-633.
[3]WANG L R L,YEH Y H.A refined seismic analysis and design of buried pipeline for fault movement[J].International Journal Earthquake Engineering and Structure Dynamics,1985,13(1):75-96.
[4]冯启民,赵林.跨越断层埋地管线屈曲分析[J].地震工程与工程振动,2001,21(4):81-87.
[5]甘文水,侯忠良.地震行波作用下埋设管线的反应计算[J].地震工程与工程振动,1988,8(2):79-86
[6]刘爱文,张素灵,胡聿贤.地震断层作用下埋地管线的反应分析[J].地震工程与工程振动,2002,22(2):23-27.
[7]赵雷,李小军,赵纪生,等.断层上覆土层断裂对埋地管线的影响[J].应用基础与工程科学学报,2009,17(6):891-898.
[8]薛景宏,吕培培,张超.埋地管道断层错动反应分析[J].科学技术与工程,2009,19(3):677-680.
[9]金浏,李鸿晶.穿越逆冲断层的埋地管道非线性反应分析[J].防灾减灾工程学报,2010,30(2):130-134.
[10]石根华.数值流形方法与非连续变形分析[M].裴觉民译.北京:清华大学出版社,1997.
[11]SHI G H.Discontinuous deformation analysis:a new numerical model for the statics and dynamics of block systems[D].Berkeley:University of California,1988.
[12]SHI G H.Block System Modeling by Discontinuous Deformation Analysis[M].Southampton UK:Computational Mechanics Publi-cations,1993:209.
[13]刘君.三维非连续变形分析与有限元耦合算法研究[D].大连:大连理工大学,2001.
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