内压对跨断层输液管道抗震性能的影响
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摘要
为研究内压对跨正断层输液管道抗震性能的影响,结合壳单元和非线性有限元理论通过ADINA建立了管土接触非线性模型。利用该模型分析了在内压与正断层错动共同作用下输液管道的力学响应及变形特点。研究结果表明,在正断层无内压工况下管子的破坏形式为受拉破坏;随着断层位移量增加,管子的轴向应变峰值增大,但其峰值位置没发生变化;在较小内压工况下管子发生拉伸变形,当内压大于一定值时管子发生弯曲变形。
In order to study the effect of internal pressure on seismic performance of transverse-normal fault pipeline,combining with shell element and nonlinear finite element theory,a nonlinear model of pipesoil contact was established through ADINA.Using the model,the mechanical response and deformation characteristics of the infusion pipeline under the action of internal pressure and normal fault displacement were analyzed.The results show that the failure mode of the tube is tensile failure under the condition of no internal pressure in the normal fault,the peak value of axial strain of the pipe increases with the increase of fault displacement,but the position of the peak value does not change.The pipe undergoes tensile deformation under the condition of small internal pressure,and when the internal pressure is greater than a certain value,the pipe undergoes bending deformation.
In order to study the effect of internal pressure on seismic performance of transverse-normal fault pipeline,combining with shell element and nonlinear finite element theory,a nonlinear model of pipesoil contact was established through ADINA.Using the model,the mechanical response and deformation characteristics of the infusion pipeline under the action of internal pressure and normal fault displacement were analyzed.The results show that the failure mode of the tube is tensile failure under the condition of no internal pressure in the normal fault,the peak value of axial strain of the pipe increases with the increase of fault displacement,but the position of the peak value does not change.The pipe undergoes tensile deformation under the condition of small internal pressure,and when the internal pressure is greater than a certain value,the pipe undergoes bending deformation.
引文
[1]侯王刚.断层作用下埋地管道反应分析及抗震方法研究[D].成都:西南石油大学,2016.
[2]杨梅,邴秋颖.断层影响下埋地管道研究综述[C].力学与工程应用.2016.
[3]丰晓红.跨断层埋地输气管道断层错动反应分析方法研究[D].成都:西南石油大学,2012.
[4]何福保,沈亚鹏.板壳理论[M].西安:西安交通大学出版社,1993.
[5]郭虎强.湖滨路段钢波纹管涵洞群力学特性及施工控制参数研究[D].兰州:兰州交通大学,2015.
[6]王绍杰,朱庆杰,刘英利,等.管土相互作用下埋地管道的抗震性能研究[J].世界地震工程,2007,23(1):47-50.
[7]曾希,董飞飞,廖恒,等.跨断层埋管力学行为的多参数模拟分析[J].武汉大学学报(工学版),2017,50(6):874-880.
[8]王滨.断层作用下埋地钢质管道反应分析方法研究[D].大连:大连理工大学,2011.
[2]杨梅,邴秋颖.断层影响下埋地管道研究综述[C].力学与工程应用.2016.
[3]丰晓红.跨断层埋地输气管道断层错动反应分析方法研究[D].成都:西南石油大学,2012.
[4]何福保,沈亚鹏.板壳理论[M].西安:西安交通大学出版社,1993.
[5]郭虎强.湖滨路段钢波纹管涵洞群力学特性及施工控制参数研究[D].兰州:兰州交通大学,2015.
[6]王绍杰,朱庆杰,刘英利,等.管土相互作用下埋地管道的抗震性能研究[J].世界地震工程,2007,23(1):47-50.
[7]曾希,董飞飞,廖恒,等.跨断层埋管力学行为的多参数模拟分析[J].武汉大学学报(工学版),2017,50(6):874-880.
[8]王滨.断层作用下埋地钢质管道反应分析方法研究[D].大连:大连理工大学,2011.