地震作用下储罐与管道连接波纹管的动力响应
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摘要
针对储罐与管道连接这个抗震薄弱环节进行研究,考虑了储罐与地基、管道与地基的相互弹性作用及流固耦合作用,使计算模型比较符合工程实际情况。将储罐罐壁看作为刚体,将波纹管部分和管道部分分别用旋转锥壳单元和空间梁单元离散化,通过分析得到波纹管与储罐连接接合面、波纹管与管道连接接合面不同单元之间的位移协调约束方程,并用罚函数法进行处理。根据流体力学速度势理论和有限元法的基本理论,利用哈密尔顿变分原理推导出储罐与管道连接波纹管系统动力分析方程,编制了系统动力分析有限元程序,计算了垂直地震激励不同场地土地基条件下储罐与管道连接波纹管位移响应。
The joint between tank and pipeline which is the weaker earthquake resistant part of the system is studied in this paper.The interactions between tank and base,and pipeline and base are considered .The coupling between bellows and its interior liquid are also considered.The dynamic analysis models for the system are fit to the situation in site.Because the stiffness of tank is much greater than that of the bellows,the tank is idealized as rigid body.The revolution bellows is idealized as a series of conical frusta,joined at nodal circles ,and the pipeline is idealized as a series of three-dimensional beam elements.The harmonious equations of the joints between the bellows and the tank,and the bellows and the pipeline are derived and are treated with penalty function method.Based on the theory of fluid mechanics and the finite element method,the dynamic analysis equations for the system are derived by using Hamilton's variation principle. The programs for the computation of the displacements response for the system have been obtained.The displacement response of the system under the earthquake are computed by using the program.Many displacement response graphs about the special place or point in bellows have been drawn in the paper.
The joint between tank and pipeline which is the weaker earthquake resistant part of the system is studied in this paper.The interactions between tank and base,and pipeline and base are considered .The coupling between bellows and its interior liquid are also considered.The dynamic analysis models for the system are fit to the situation in site.Because the stiffness of tank is much greater than that of the bellows,the tank is idealized as rigid body.The revolution bellows is idealized as a series of conical frusta,joined at nodal circles ,and the pipeline is idealized as a series of three-dimensional beam elements.The harmonious equations of the joints between the bellows and the tank,and the bellows and the pipeline are derived and are treated with penalty function method.Based on the theory of fluid mechanics and the finite element method,the dynamic analysis equations for the system are derived by using Hamilton's variation principle. The programs for the computation of the displacements response for the system have been obtained.The displacement response of the system under the earthquake are computed by using the program.Many displacement response graphs about the special place or point in bellows have been drawn in the paper.
引文
[1] SY/T4073—94,储罐抗震用金属软管和波纹补偿器选用标准[S].北京,1994.
[2] 张进国.油罐与管道连接波纹管抗震研究[D].石油大学,1998.
[3] [日]振动工程大全编辑委员会编,谷口修主编,尹传家译.振动工程大全(下)[M].北京:机械工业出版社,1986,948.
[4] 陈冠卿.震害及长距离输油管道的抗震计算[A].王优龙主编.工程抗震与防灾[C].西安:陕西科学技术出版社,1988.
[5] 张进国,等.任意载荷作用下旋转波纹管的有限元分析[J].石油大学学报,1998,(4):75-78.
[6] 张进国,等.任意载荷作用下旋转波纹管几何非线性有限元分析[J].农业工程学报,1998,(1):65-69.
[7] 张进国,等.考虑流固耦合作用旋转波纹管固有频率计算的有限单元法[J].农业工程学报,1999,(2):50-54.
[8] 张进国,等.地基下沉作用下储罐与管道连接波纹管的有限元分析[J].工程力学(增刊),1998,470-480.
[9] 葛子余.储罐抗震用金属软管[J].石油化工设备,1986,(12):33-39.
[2] 张进国.油罐与管道连接波纹管抗震研究[D].石油大学,1998.
[3] [日]振动工程大全编辑委员会编,谷口修主编,尹传家译.振动工程大全(下)[M].北京:机械工业出版社,1986,948.
[4] 陈冠卿.震害及长距离输油管道的抗震计算[A].王优龙主编.工程抗震与防灾[C].西安:陕西科学技术出版社,1988.
[5] 张进国,等.任意载荷作用下旋转波纹管的有限元分析[J].石油大学学报,1998,(4):75-78.
[6] 张进国,等.任意载荷作用下旋转波纹管几何非线性有限元分析[J].农业工程学报,1998,(1):65-69.
[7] 张进国,等.考虑流固耦合作用旋转波纹管固有频率计算的有限单元法[J].农业工程学报,1999,(2):50-54.
[8] 张进国,等.地基下沉作用下储罐与管道连接波纹管的有限元分析[J].工程力学(增刊),1998,470-480.
[9] 葛子余.储罐抗震用金属软管[J].石油化工设备,1986,(12):33-39.
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