刚性桥面板天然气管道悬索跨越结构力学性能
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摘要
建立刚性桥面板天然气管道悬索跨越工程原型的有限元计算模型,并对有限元计算模型进行静力、模态和清管反应的有限元分析.结果表明:在成桥状态下,与设计资料对比,悬索跨越结构的整体位移曲线满足设计精度要求;天然气管道悬索跨越结构的前3阶模态均为平面内桥身的振动,直到第4阶才出现主缆的振动,在第6阶出现桥面板的平面外振动;清管球通过跨越结构时间为110,120s的跨中竖向位移-清管球位置曲线发展完整,两个波峰和一个波谷并且整个的曲线形状同静力分析的形状大致相同;随着清管球经过全桥的时间不断减小,曲线发展得越来越不完整,第一个波谷出现的位置也不断地向坐标轴的右边推移,第二个波峰没有出现,其中通过时间为30,40s的曲线甚至没有出现第一个波谷.
The finite element model of engineering prototype of cable-suspended structure of liquefied natural gas pipelines with rigid deck slab is established,and the static,modal and pigging response are carried out.The whole displacement curve of cable-suspended structure under dead load,meets the design accuracy by comparison with the design data;The first three rank modes of cable-suspended structure of liquefied natural gas pipelines are in-plane vibration of bridge,the vibration of main cables appears at the fourth rank,the out-plane vibration of bridge deck appears at the sixth rank.Mid-span vertical displacement-position of pigging ball curve of pigging ball taking 120 sand 110sto cross suspended structure develops completely,appearing two wave crests and one trough,and the shape of whole curve is similar to the shape of static analysis.With the time of pigging ball through bridge decreases,the development of curve is more and more incomplete,the position of the first trough moves continuously to the right of axis,the second wave crest does not appear,when the crossing bridge′s time is 30 sor 40s,the curve of even does not appear the first trough.
The finite element model of engineering prototype of cable-suspended structure of liquefied natural gas pipelines with rigid deck slab is established,and the static,modal and pigging response are carried out.The whole displacement curve of cable-suspended structure under dead load,meets the design accuracy by comparison with the design data;The first three rank modes of cable-suspended structure of liquefied natural gas pipelines are in-plane vibration of bridge,the vibration of main cables appears at the fourth rank,the out-plane vibration of bridge deck appears at the sixth rank.Mid-span vertical displacement-position of pigging ball curve of pigging ball taking 120 sand 110sto cross suspended structure develops completely,appearing two wave crests and one trough,and the shape of whole curve is similar to the shape of static analysis.With the time of pigging ball through bridge decreases,the development of curve is more and more incomplete,the position of the first trough moves continuously to the right of axis,the second wave crest does not appear,when the crossing bridge′s time is 30 sor 40s,the curve of even does not appear the first trough.
引文
[1]高建,王德国,何仁洋.基于ANSYS的悬索跨越管道地震时程响应分析[J].西南石油大学学报:自然科学版,2010,32(1):155-159.
[2]李冰,黄丽华,雷刚.大跨度悬索管道桥的ANSYS有限元分析综述[J].防灾减灾工程学报,2010,30(9):262-263.
[3]中华人民共和国住房城乡建设部,中华人民共和国国家质量监督检验检疫局.GB 50459-2009油气输送管道跨越工程设计规范[S].北京:中国计划出版社,2009:15-19.
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[6]王金国.管道悬索跨越结构抗震能力和健康诊断研究[D].哈尔滨:中国地震局工程力学研究所,2005:37-42.
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[9]王金国,丁阳.模拟损伤状态下长输管道悬索跨越结构抗震性能的试验研究[J].地震工程与工程振动,2006,26(8):192-198.
[10]王金国,丁阳.长输管道悬索跨越结构静动力性能的有限元分析[J].工程力学,2007,24(8):173-177.
[11]罗喜恒.悬索桥缆索系统的数值分析法[J].同济大学学报:自然科学版,2004,32(4):441-446.
[12]罗喜恒,肖汝诚,项海帆.空间缆索悬索桥的主缆线形分析[J].同济大学学报:自然科学版,2004,32(10):1349-1354.
[2]李冰,黄丽华,雷刚.大跨度悬索管道桥的ANSYS有限元分析综述[J].防灾减灾工程学报,2010,30(9):262-263.
[3]中华人民共和国住房城乡建设部,中华人民共和国国家质量监督检验检疫局.GB 50459-2009油气输送管道跨越工程设计规范[S].北京:中国计划出版社,2009:15-19.
[4]中华人民共和国住房城乡建设部,中华人民共和国国家质量监督检验检疫局.GB 50470-2008油气输送管道线路工程抗震设计规范[S].北京:中国计划出版社,2009:7-10.
[5]中华人民共和国住房城乡建设部,中华人民共和国国家质量监督检验检疫局.GB 50460-2008油气输送管道跨越工程施工规范[S].北京:中国计划出版社,2009:2-4.
[6]王金国.管道悬索跨越结构抗震能力和健康诊断研究[D].哈尔滨:中国地震局工程力学研究所,2005:37-42.
[7]王恩青.悬索式管桥静力、清管及地震分析研究[D].北京:北京化工大学,2007:10-12.
[8]张峰.悬索式管道跨越结构计算方法分析[D].大庆:大庆石油学院,2007:36-49.
[9]王金国,丁阳.模拟损伤状态下长输管道悬索跨越结构抗震性能的试验研究[J].地震工程与工程振动,2006,26(8):192-198.
[10]王金国,丁阳.长输管道悬索跨越结构静动力性能的有限元分析[J].工程力学,2007,24(8):173-177.
[11]罗喜恒.悬索桥缆索系统的数值分析法[J].同济大学学报:自然科学版,2004,32(4):441-446.
[12]罗喜恒,肖汝诚,项海帆.空间缆索悬索桥的主缆线形分析[J].同济大学学报:自然科学版,2004,32(10):1349-1354.
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