浅海输气管道坠物碰撞动力响应分析
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摘要
为深入研究浅海输气管道坠物碰撞损伤过程,从简化解析法和数值分析法2个角度对浅海输气管道坠物碰撞损伤过程进行动力响应分析。在简化解析法中,采用非完全弹性碰撞理论-动量守恒定律计算方法,计算坠物冲击荷载;依据布辛尼克斯法分析冲击荷载在土体中的传递,采用衰减系数分析冲击荷载在混凝土层中的传递,进而计算管道在坠物冲击荷载作用下的内力。在数值分析法中,用Workbench LS-DYNA有限元软件模拟浅海输气管道坠物碰撞的动力响应过程。结果表明:模拟得到的冲击荷载分布规律与布辛尼克斯法得到的相似,但衰减的速度更快;由于覆土层和混凝土防护层吸收了碰撞的大部分能量,冲击荷载对管道的影响范围有限。
In order to carry out further research into the impact damage process of neritic gas pipelines caused by dropped objects,the dynamic response was analyzed by the simplified analytical method and numerical simulation method. The impact loads of dropped objects were calculated by non-perfect elastic collision theory and momentum conservation law. The transmission of impact load in soil was analyzed based on J.Boussinesq method,and the attenuation coefficient was used in analyzing the transmission in the concrete layer. Then the internal force was calculated. Workbench LS-DYNA software was used to simulate the dynamic response process of neritic gas pipeline impacted by dropped objects. The results show that the distribution of impact load obtained by simulation is similar to that obtained by J.Boussinesqmethod,but the speed of attenuation is faster,and that because the soil layer and concrete protective layer absorb most of the impact energy,the impact load on the pipeline is limited.
In order to carry out further research into the impact damage process of neritic gas pipelines caused by dropped objects,the dynamic response was analyzed by the simplified analytical method and numerical simulation method. The impact loads of dropped objects were calculated by non-perfect elastic collision theory and momentum conservation law. The transmission of impact load in soil was analyzed based on J.Boussinesq method,and the attenuation coefficient was used in analyzing the transmission in the concrete layer. Then the internal force was calculated. Workbench LS-DYNA software was used to simulate the dynamic response process of neritic gas pipeline impacted by dropped objects. The results show that the distribution of impact load obtained by simulation is similar to that obtained by J.Boussinesqmethod,but the speed of attenuation is faster,and that because the soil layer and concrete protective layer absorb most of the impact energy,the impact load on the pipeline is limited.
引文
[1]骆吉庆.浅海输气管道坠物碰撞损伤过程动力响应分析[D].成都:西南石油大学,2017.LUO Jiqing.Analysis on dynamic response of neritic gas pipeline's collision damage impacted by dropped objects[D].Chengdu:Southwest Petroleum University,2017.
[2]杨秀娟,闫涛,修宗祥,等.海底管道受坠物撞击时的弹塑性有限元分析[J].工程力学,2011,28(6):189-194.YANG Xiujuan,YAN Tao,XIU Zongxiang,et al.Elastic-plastic finite element analysis of submarine pipeline impacted by dropped objects[J].Engineering Mechanics,2011,28(6):189-194.
[3]杨秀娟,修宗祥,闫相祯,等.海底管道受坠物撞击的三维仿真研究[J].振动与冲击,2009,28(11):47-50.YANG Xiujuan,XIU Zongxiang,YAN Xiangzhen,et al.3D simulation of submarine pipeline impacted by dropped objects[J].Journal of Vibration and Shock,2009,28(11):47-50.
[4]娄敏,明海芹.基于LS-DYNA海底悬空管道受坠物碰撞动力响应分析[J].海洋通报,2015,34(1):113-120.LOU Min,MING Haiqin.Dynamic response analysis of the submarine suspended pipeline impacted by dropped objects based on LS-DYNA[J].Marine Science Bulletin,2015,34(1):113-120.
[5]BROOKER D C.A numerical study on the lateral indentation of continuously supported tubes[J].Journal of Constructional Steel Research,2004,60(8):1 177-1 192.
[6]DNV-RP-F107,Risk assessment of pipeline protection[S].2010.
[7]荆宏远.落石冲击下浅埋管道动力学响应分析与模拟[D].武汉:中国地质大学,2007.JING Hongyuan.Analysis and simulation of dynamic response of shallow buried pipeline under rockfall impact[D].Wuhan:China University of Geosciences,2007.
[8]水伟厚,高广运,吴延炜,等.湿陷性黄土在强夯作用下的非完全弹性碰撞与冲击应力解析[J].建筑结构学报,2003,24(5):92-97.SHUI Weihou,GAO Guangyun,WU Yanwei,et al.Non-perfect elastic dynamic collision and impact stress analysis during compaction on collapsible loess[J].Journal of Building Structures,2003,24(5):92-97.
[9]李玉飞,叶义成,刘晓云,等.机械施工荷载作用下采空区顶板稳定性研究[J].中国安全科学学报,2017,27(7):133-138.LI Yufei,YE Yicheng,LIU Xiaoyun,et al.Research on stability of goaf roof under mechanical construction loading[J].China Safety Science Journal,2017,27(7):133-138.
[10]《给水排水工程结构设计手册》编委会.给水排水工程结构设计手册(第2版)[M].北京:中国建筑工业出版社,2007:245-247.
[11]ABDOM T H,HA D,ROURKE M J O,et al.Factors influencing the behavior of buried pipelines subjected to earthquake faulting[J].Soil Dynamics and Earthquake Engineering,2009,29(3):415-427.
[12]WANG Yu,QIAN Xudong,LIEW J Y R,et al.Experimental behavior of cement filled pipe-in-pipe composite structures under transverse impact[J].International Journal of Impact Engineering,2014,72(5):1-16.
[13]田国伟,刘兴业,孙中岳.大口径输水钢管的受力分析[C].第十届全国结构工程学术会议论文集,2001:463-467.
[14]GB50251—2015,输气管道工程设计规范[S].GB50251-2015,Code for design of gas transmission pipeline engineering[S].
[15]李同林.应用弹塑性力学[M].武汉:中国地质大学出版社,2002:65-66.
[16]HALLQUIST J O.LS-DYNA theory manual[M].California:Livermore Software Technology Corporation,2006:329.
[17]周立国,姚安林,徐涛龙,等.挖掘载荷下燃气PE管道损伤分析[J].中国安全科学学报,2017,27(3):59-64.ZHOU Liguo,YAO Anlin,XU Taolong,et al.Damage analysis of urban gas PE pipeline under excavation load[J].China Safety Science Journal,2017,27(3):59-64.
[18]SIMO J C,JU J W,PISTER K S,et al.Assessment of cap model:consistent return algorithms and rate-dependent extension[J].Journal of Engineering Mechanics,1988,114(2):191-218.
[19]刘建成,顾永宁.基于整船整桥模型的船桥碰撞数值仿真[J].工程力学,2003,20(5):155-162.LIU Jiancheng,GU Yongning.Simulation of ship-bridge head-on collision based on finite element model of whole shipbridge[J].Engineering Mechanics,2003,20(5):155-162
[2]杨秀娟,闫涛,修宗祥,等.海底管道受坠物撞击时的弹塑性有限元分析[J].工程力学,2011,28(6):189-194.YANG Xiujuan,YAN Tao,XIU Zongxiang,et al.Elastic-plastic finite element analysis of submarine pipeline impacted by dropped objects[J].Engineering Mechanics,2011,28(6):189-194.
[3]杨秀娟,修宗祥,闫相祯,等.海底管道受坠物撞击的三维仿真研究[J].振动与冲击,2009,28(11):47-50.YANG Xiujuan,XIU Zongxiang,YAN Xiangzhen,et al.3D simulation of submarine pipeline impacted by dropped objects[J].Journal of Vibration and Shock,2009,28(11):47-50.
[4]娄敏,明海芹.基于LS-DYNA海底悬空管道受坠物碰撞动力响应分析[J].海洋通报,2015,34(1):113-120.LOU Min,MING Haiqin.Dynamic response analysis of the submarine suspended pipeline impacted by dropped objects based on LS-DYNA[J].Marine Science Bulletin,2015,34(1):113-120.
[5]BROOKER D C.A numerical study on the lateral indentation of continuously supported tubes[J].Journal of Constructional Steel Research,2004,60(8):1 177-1 192.
[6]DNV-RP-F107,Risk assessment of pipeline protection[S].2010.
[7]荆宏远.落石冲击下浅埋管道动力学响应分析与模拟[D].武汉:中国地质大学,2007.JING Hongyuan.Analysis and simulation of dynamic response of shallow buried pipeline under rockfall impact[D].Wuhan:China University of Geosciences,2007.
[8]水伟厚,高广运,吴延炜,等.湿陷性黄土在强夯作用下的非完全弹性碰撞与冲击应力解析[J].建筑结构学报,2003,24(5):92-97.SHUI Weihou,GAO Guangyun,WU Yanwei,et al.Non-perfect elastic dynamic collision and impact stress analysis during compaction on collapsible loess[J].Journal of Building Structures,2003,24(5):92-97.
[9]李玉飞,叶义成,刘晓云,等.机械施工荷载作用下采空区顶板稳定性研究[J].中国安全科学学报,2017,27(7):133-138.LI Yufei,YE Yicheng,LIU Xiaoyun,et al.Research on stability of goaf roof under mechanical construction loading[J].China Safety Science Journal,2017,27(7):133-138.
[10]《给水排水工程结构设计手册》编委会.给水排水工程结构设计手册(第2版)[M].北京:中国建筑工业出版社,2007:245-247.
[11]ABDOM T H,HA D,ROURKE M J O,et al.Factors influencing the behavior of buried pipelines subjected to earthquake faulting[J].Soil Dynamics and Earthquake Engineering,2009,29(3):415-427.
[12]WANG Yu,QIAN Xudong,LIEW J Y R,et al.Experimental behavior of cement filled pipe-in-pipe composite structures under transverse impact[J].International Journal of Impact Engineering,2014,72(5):1-16.
[13]田国伟,刘兴业,孙中岳.大口径输水钢管的受力分析[C].第十届全国结构工程学术会议论文集,2001:463-467.
[14]GB50251—2015,输气管道工程设计规范[S].GB50251-2015,Code for design of gas transmission pipeline engineering[S].
[15]李同林.应用弹塑性力学[M].武汉:中国地质大学出版社,2002:65-66.
[16]HALLQUIST J O.LS-DYNA theory manual[M].California:Livermore Software Technology Corporation,2006:329.
[17]周立国,姚安林,徐涛龙,等.挖掘载荷下燃气PE管道损伤分析[J].中国安全科学学报,2017,27(3):59-64.ZHOU Liguo,YAO Anlin,XU Taolong,et al.Damage analysis of urban gas PE pipeline under excavation load[J].China Safety Science Journal,2017,27(3):59-64.
[18]SIMO J C,JU J W,PISTER K S,et al.Assessment of cap model:consistent return algorithms and rate-dependent extension[J].Journal of Engineering Mechanics,1988,114(2):191-218.
[19]刘建成,顾永宁.基于整船整桥模型的船桥碰撞数值仿真[J].工程力学,2003,20(5):155-162.LIU Jiancheng,GU Yongning.Simulation of ship-bridge head-on collision based on finite element model of whole shipbridge[J].Engineering Mechanics,2003,20(5):155-162