管道穿越断层最佳交叉角度研究
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摘要
基于MIDAS结构分析软件,采用大变形壳有限元方法分析了大口径油气管道在断层位错作用下的应变响应。考虑管道与土体的非线性和管土耦合作用,系统分析了不同断层类型下不同交叉角度对管道应变的影响,得到了断层与管道的交角对管道应变响应的影响规律和变化曲线,并在此基础上,总结得到了不同覆盖土层厚度下管道穿越断层的最佳交叉角度。
Based on structural analysis software MIDAS,the strain response of large diameter oil and gas pipeline under dislocation of faults was analyzed by large deformation shell finite element method.Considering pipeline-soil coupling and material nonlinearity of both pipeline and soil,the influence of different crossing angles on the pipeline response in different types of earthquake fault was analyzed systematically,the influence law and variation curve of strain response of pipelines for different crossing angles were acquired.Based on the results,the optimal crossing angle of oil-gas pipeline passing through earthquake fault at different cover thickness is obtained.
Based on structural analysis software MIDAS,the strain response of large diameter oil and gas pipeline under dislocation of faults was analyzed by large deformation shell finite element method.Considering pipeline-soil coupling and material nonlinearity of both pipeline and soil,the influence of different crossing angles on the pipeline response in different types of earthquake fault was analyzed systematically,the influence law and variation curve of strain response of pipelines for different crossing angles were acquired.Based on the results,the optimal crossing angle of oil-gas pipeline passing through earthquake fault at different cover thickness is obtained.
引文
[1]闫相祯,张立松,杨秀娟.管道穿越地震断层管土耦合大变形壳模型的应变响应规律研究[J].土木工程学报,2010,43(8):132-133.Yan Xiangzhen,Zhang Lisong,Yang Xiujuan.Strain response study of oil-gas pipeline crossing earthquake fault based on pipeline-soil couplingand large deformation shell model[J].China Civil Engineering Journal,2010,43(8):132-133.
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[5]蒋录珍.动荷载作用下地下管道破坏的数值模拟[D].唐山:河北理工大学.2006.Jiang Luzhen.Numerical Simulation of Buried Pipeline Damage under Dynamic Loading[D].Tangshan:College of civil and architectural engineer-ing Hebei Polytechnic University.2006.
[6]宋丽,廖红建.应变空间的软岩统一弹塑性软化本构模型[J].西安交通大学学报,2007,41(7):857-861.Song Li,Liao Hongjian.Unified elasto-plastic softening constitutive model of soft rock in strain space[J].Journal of Xi’an Jiaotong University,2007,41(7):857-861.
[7]GB50470-2008油气输送管道线路工程抗震技术规范[S].北京:中国计划出版社,2008.GB 50470-2008 Seismic Technical Code for oil and gas transmission pipeline engineering[S].Beijing:China Planning Press,2008.
[2]赵林,冯启民.埋地管线有限元建模方法研究[J].地震工程与工程振动,2001,21(2):53-57.Zhao Lin,Feng Qimin.Research on methods for establishing FEM model of buried pipe lines[J].Earthquake Engineering and Engineering Vi-bration,2001,21(2):53-57.
[3]刘爱文,胡聿贤,赵凤新,等.地震断层作用下埋地管线壳有限元分析的等效边界方法[J].地震学报,2004,26(S1):141-147.Liu Aiwen,H u Yuxian,Zhao Fengxin,et al.An equivalent-boundary method for the shell analysis of buried pipelines under fault movement[J].Earthquake Science,2004,26(S1):141-147.
[4]刘爱文.基于壳模型的埋地管线抗震分析[D].哈尔滨:中国地震局工程力学研究所.2002.Liu Aiwen.Response analysis of buried pipeline crossing the fault based on shell-model[D].Harbin:Institute of Engineering Mechanics,ChinaEarthquake Administration,2002.
[5]蒋录珍.动荷载作用下地下管道破坏的数值模拟[D].唐山:河北理工大学.2006.Jiang Luzhen.Numerical Simulation of Buried Pipeline Damage under Dynamic Loading[D].Tangshan:College of civil and architectural engineer-ing Hebei Polytechnic University.2006.
[6]宋丽,廖红建.应变空间的软岩统一弹塑性软化本构模型[J].西安交通大学学报,2007,41(7):857-861.Song Li,Liao Hongjian.Unified elasto-plastic softening constitutive model of soft rock in strain space[J].Journal of Xi’an Jiaotong University,2007,41(7):857-861.
[7]GB50470-2008油气输送管道线路工程抗震技术规范[S].北京:中国计划出版社,2008.GB 50470-2008 Seismic Technical Code for oil and gas transmission pipeline engineering[S].Beijing:China Planning Press,2008.
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