基于ANSYS的悬索跨越管道地震时程响应分析
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摘要
以长庆油田输油一处某悬索跨越管桥为工程背景,应用ANSYS建立分析模型,采用时程分析法进行非线性地震响应分析。按轴向、横向、竖向分别输入地震波,分析结构在三种情况下的受力特点对比,得到不同方向的抗震性能。以三、四类场地地震波为输入,考虑不同地震烈度,一致输入和行波效应下结构关键部位位移、应力值,并用时程曲线直观表达参数随时间的变化。探讨了悬跨管桥在不同地震动情况下的受力特点和规律,找出薄弱环节并提出了改进措施,为地震预防及灾后拯救提供了一种有效途径。
The cable-suspended pipeline bridge between Wangyao heating station and Yangshan oil transportation station,Changqing Oilfield,is taken as example,ANSYS is applied to set up analytical model,time-history analysis is used to carry out non-linear seismic response study.Seismic wave is input in axial,transverse and vertical directions respectively to analyze the stress feature of the engineering structure under three types of conditions,the anti-earthquake ability in different directions is obtained.The third and fourth classes sites seismic waves is considered as input,the conditions of different earthquake intensity,displacement and stress value of key structure locations while uniform input and traveling wave effect existing are all taken into consideration,and the time-history curve is used to directly express the change of the parameters as time.The stress feature and law of cable-suspended pipeline bridge under the conditions of different earthquake intensity are probed,the weak points are figured out and corresponding measurement presented.
The cable-suspended pipeline bridge between Wangyao heating station and Yangshan oil transportation station,Changqing Oilfield,is taken as example,ANSYS is applied to set up analytical model,time-history analysis is used to carry out non-linear seismic response study.Seismic wave is input in axial,transverse and vertical directions respectively to analyze the stress feature of the engineering structure under three types of conditions,the anti-earthquake ability in different directions is obtained.The third and fourth classes sites seismic waves is considered as input,the conditions of different earthquake intensity,displacement and stress value of key structure locations while uniform input and traveling wave effect existing are all taken into consideration,and the time-history curve is used to directly express the change of the parameters as time.The stress feature and law of cable-suspended pipeline bridge under the conditions of different earthquake intensity are probed,the weak points are figured out and corresponding measurement presented.
引文
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[13]孙建刚,滕振超,王伟,等.渭惠渠跨越管道地震动响应分析[J].世界地震工程,2004,20(4):112-118.
[14]邵长江,钱永久.非一致地震激励下大跨斜拉桥非线性响应计算[J].公路交通科技,2007,24(3):64-67.
[15]Chen W W,Shih B J,Chen Y C.Seismic response of natural gas and water pipelines in the Ji-Ji earthquake[J].Soil Dynamics and Earthquake Engineering,2002,22(12):1209-1214.
[16]许金华,王向坚.大跨度拱桥在地震行波作用下的响应[J].重庆交通学院学报,1998,17(2):1-5.
[17]李金波,郑茂盛,张杰.非均匀外载荷对套管承载能力的影响分析[J].西安石油大学学报:自然科学版,2007.22(1):100-102.
[18]GB18306—2001,中国地震动参数区划图[S].北京:中国标准出版社,2001.
[19]刘洋,魏修成.复杂构造中地震波传播数值模拟[J].新疆石油地质,2008,29(1):12-14.
[20]董汝博,周晶,冯新.部分悬跨海底管道多点输入地震反应分析[J].振动工程学报,2008,21(2):146-151.
[21]GB50011—2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[2]张陵,郭惠勇,孙清,等.长输管道抗震研究的进展与趋向[J].西安交通大学学报,2001,35(2):203-209.
[3]周敉,王君杰,袁万城.自锚式悬索桥地震反应有限元分析[J].长安大学学报:自然科学版,2008,28(1):66-67.
[4]伍小平,冯启民,焦双健,等.大跨度斜拉管线桥地震反应分析[J].地震工程与工程振动,2001,21(3):49-54.
[5]王波,张海龙,武修雄.基于大质量法的高墩大跨连续刚构桥地震时程反应分析[J].桥梁建设,2006(5):17-20.
[6]邓道明,徐立.高压大口径油气管道跨长计算[J].西南石油学院学报,2000,22(1):80-83.
[7]Nazmy A S,Abdel-Gbaffar.Nonlinear earthquake response analysis of long span cable stayed bridges[J].Earthquake Engineering&Structural Dynamics,1990,19(1):63-76.
[8]Abdoun TH,Symans MD,Thomas D R,et al.Factors in-fluencing the behavior of buried pipelines subjected to earthquake faulting[J].Soil Dynamics and Earthquake Engineering,2009,29(3):415-427.
[9]孙广龙,宋建永,亓路宽,等.大跨径钢筋混凝土拱桥的地震时程响应分析[J].公路交通科技,2007,24(3):86-87.
[10]华中科技大学土木工程与力学学院.小沙湾黄河特大桥动力特性综合研究报告[R].2006.
[11]张波.ANSYS有限元数值分析原理与工程应用[M].北京:清华大学出版社,2005.
[12]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.
[13]孙建刚,滕振超,王伟,等.渭惠渠跨越管道地震动响应分析[J].世界地震工程,2004,20(4):112-118.
[14]邵长江,钱永久.非一致地震激励下大跨斜拉桥非线性响应计算[J].公路交通科技,2007,24(3):64-67.
[15]Chen W W,Shih B J,Chen Y C.Seismic response of natural gas and water pipelines in the Ji-Ji earthquake[J].Soil Dynamics and Earthquake Engineering,2002,22(12):1209-1214.
[16]许金华,王向坚.大跨度拱桥在地震行波作用下的响应[J].重庆交通学院学报,1998,17(2):1-5.
[17]李金波,郑茂盛,张杰.非均匀外载荷对套管承载能力的影响分析[J].西安石油大学学报:自然科学版,2007.22(1):100-102.
[18]GB18306—2001,中国地震动参数区划图[S].北京:中国标准出版社,2001.
[19]刘洋,魏修成.复杂构造中地震波传播数值模拟[J].新疆石油地质,2008,29(1):12-14.
[20]董汝博,周晶,冯新.部分悬跨海底管道多点输入地震反应分析[J].振动工程学报,2008,21(2):146-151.
[21]GB50011—2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
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