基于接触单元的埋地管线有限元抗震分析
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摘要
埋地管线有多种简化计算模型,但计算结果相差较大.管土之间的相互作用可以看成管土接触问题,利用接触单元建立埋地管线及土体三维实体模型,并对地震荷载作用下的管线进行应力计算,给出了最大轴向应力.对比规范方法、理论方法、梁-土弹簧模型、管土接触模型的4种计算结果,现有简化模型的计算结果偏小,偏于不安全.
There are some simple models of pipeline with clearly different results.Interaction between the pipeline and soil can be considered as pipe-soil contact.Based on the pipe-soil contact model,a 3D finite-element model of buried pipeline and soil is established in the paper.Seismic responses of pipeline and the axis stress are given.Comparison among several methods including the standard method,a theoretical method,the beam-soil-spring model and the proposed pipe-soil contact model show that the results of simple models are too small and not safe enough.
There are some simple models of pipeline with clearly different results.Interaction between the pipeline and soil can be considered as pipe-soil contact.Based on the pipe-soil contact model,a 3D finite-element model of buried pipeline and soil is established in the paper.Seismic responses of pipeline and the axis stress are given.Comparison among several methods including the standard method,a theoretical method,the beam-soil-spring model and the proposed pipe-soil contact model show that the results of simple models are too small and not safe enough.
引文
[1]赵成钢,冯启民.生命线地震工程[M].北京:地震出版社,1994:3-10.
[2]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.
[3]甘文水,侯忠良.地震行波作用下三维埋设管线反应分析[J].工业建筑,1992,21(2):200-204.
[4]TAKADAS,TNANABEK.Three-dimensional seismicresponse analysis of buried continuous or jointedpipelines[J].J of Pressure Vessel Technology,1987,109(1):35-42.
[5]NEWMARKN M,HALLW J.Pipeline design to resistlarge fault displacement[C]∥Proc of US Conf onEarthq Eng.Oakland:ERRI,1975:416-425.
[6]ARIMANT,MULESKIG E.A Reviewof the response ofburied pipelines under seismic excitations[J].Earthquake Engineering and Structural Dynamics,1981,9:133-151.
[7]DATTAS K,SHAHA H,WONGK C.Dynamic stressesand displacement in a buried pipe[J].J of Eng Mech,1984,110(12):1451-1466.
[8]梁建文,何玉敖.地下管线的轴向动态失稳分析[J].工程力学,1994,11(3):129-135.
[9]梁建文,何玉敖,于国有,等.地下管道三通应力分析[J].天津大学学报,1994,27(6):679-683.
[10]TAKADAS,LIANGJ W,LIT Y.Shell-model responseof buried pipelines to large movements[J].Journal ofStructural Engineering,1998(1):44-50.
[11]任艳荣.ABAQUS软件在管土相互作用中的运用[J].中国海洋平台,2007,22(4):48-51.
[12]林均歧,胡明炜,申选召.跨越断层埋地管线地震反应数值分析[J].地震工程与工程振动,2006,26(3):186-192.
[13]中华人民共和国建设部.室外给水排水和煤气热力工程抗震设计规范:GB 50032—2003[S].北京:中国建筑工业出版社,2003:82-85.
[14]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992:324-332.
[15]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.
[16]刘爱文.基于壳模型的埋地管线抗震分析[D].北京:中国地震局地球物理研究所,2002:38-43.
[2]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.
[3]甘文水,侯忠良.地震行波作用下三维埋设管线反应分析[J].工业建筑,1992,21(2):200-204.
[4]TAKADAS,TNANABEK.Three-dimensional seismicresponse analysis of buried continuous or jointedpipelines[J].J of Pressure Vessel Technology,1987,109(1):35-42.
[5]NEWMARKN M,HALLW J.Pipeline design to resistlarge fault displacement[C]∥Proc of US Conf onEarthq Eng.Oakland:ERRI,1975:416-425.
[6]ARIMANT,MULESKIG E.A Reviewof the response ofburied pipelines under seismic excitations[J].Earthquake Engineering and Structural Dynamics,1981,9:133-151.
[7]DATTAS K,SHAHA H,WONGK C.Dynamic stressesand displacement in a buried pipe[J].J of Eng Mech,1984,110(12):1451-1466.
[8]梁建文,何玉敖.地下管线的轴向动态失稳分析[J].工程力学,1994,11(3):129-135.
[9]梁建文,何玉敖,于国有,等.地下管道三通应力分析[J].天津大学学报,1994,27(6):679-683.
[10]TAKADAS,LIANGJ W,LIT Y.Shell-model responseof buried pipelines to large movements[J].Journal ofStructural Engineering,1998(1):44-50.
[11]任艳荣.ABAQUS软件在管土相互作用中的运用[J].中国海洋平台,2007,22(4):48-51.
[12]林均歧,胡明炜,申选召.跨越断层埋地管线地震反应数值分析[J].地震工程与工程振动,2006,26(3):186-192.
[13]中华人民共和国建设部.室外给水排水和煤气热力工程抗震设计规范:GB 50032—2003[S].北京:中国建筑工业出版社,2003:82-85.
[14]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992:324-332.
[15]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.
[16]刘爱文.基于壳模型的埋地管线抗震分析[D].北京:中国地震局地球物理研究所,2002:38-43.
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