管土相互作用下埋地管道的抗震性能研究
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摘要
管土相互作用是影响埋地管道抗震性能的关键因素之一,分析管土相互作用是城市地下管道建设中面临的突出问题。在应用ADINA软件实现地下管道与土体融合有限元建模的基础上,通过定义管土接触来设定管土相互作用;介绍了管土接触设定、地震荷载加载时间函数、模型参数选择与求解步骤,并依据所建模型计算了埋地管道的变形和应力分布。根据计算结果,分析了管土相互作用对埋地管道抗震性能的影响,并给出了几点工程建议。
Pipe-soil interaction is one of the primary factors in earthquake resistance of buried pipeline,and the analysis of pipe-soil interaction is the key of underground pipeline construction.On the basis of finite element modeling,pipe-soil contact is simulated by Boolean Body Operators,and pipe-soil interaction is defined by the pipe-soil Contact Control Operators in ADINA.Pipe-soil contact definition,time function of earthquake load,model preferences and solution are introduced.The distribution of displacement and stress on buried pipeline is calculated.Influence of pipe-soil interaction on earthquake resistance of buried pipeline is investigated based on the results of numerical simulation.Finally,some advice for earthquake lifeline engineering is proposed.
Pipe-soil interaction is one of the primary factors in earthquake resistance of buried pipeline,and the analysis of pipe-soil interaction is the key of underground pipeline construction.On the basis of finite element modeling,pipe-soil contact is simulated by Boolean Body Operators,and pipe-soil interaction is defined by the pipe-soil Contact Control Operators in ADINA.Pipe-soil contact definition,time function of earthquake load,model preferences and solution are introduced.The distribution of displacement and stress on buried pipeline is calculated.Influence of pipe-soil interaction on earthquake resistance of buried pipeline is investigated based on the results of numerical simulation.Finally,some advice for earthquake lifeline engineering is proposed.
引文
[1]陈玲俐,李杰.供水管网渗漏分析研究[J].地震工程与工程振动,2003,23(l):115-121.
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[3]高惠瑛,冯启民.场地沉陷埋地管道反应分析方法[J].地震工程与工程振动,1997,17(1):68-75.
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[7]蒋录珍,朱庆杰.跨断层地下管道破坏的数值模拟[J].福州大学学报(自然科学版),2005,33(Supp.):321-324.
[8]朱庆杰,刘英利,蒋录珍,等.管土摩擦和管径对埋地管道破坏的影响分析[J].地震工程与工程振动,2006,26(3):197-199.
[9]弓培林,靳钟铭.大采高采场覆岩结构特征及运动规律研究[J].煤炭学报,2004,29(1):7-11.
[2]Muleski G E,Ariman T,Aumen C P.A shell model of a buried pipe in a seismic environment.ASME Journal of Pressure Vessel Technology,1979,10(44):44-50.
[3]高惠瑛,冯启民.场地沉陷埋地管道反应分析方法[J].地震工程与工程振动,1997,17(1):68-75.
[4]冯启民,赵林.跨越断层埋地管道屈曲分析[J].地震工程与工程振动,2001,21(4):80-87.
[5]汤爱平,陆钦年.埋地生命线管道系统智能监测的初步研究[J].世界地震工程,2001,17(1):106-111.
[6]张进国,吕英民,赵国忠.地震作用下储罐与管道连接波纹管的动力响应[J].世界地震工程,2004,20(3):123-127.
[7]蒋录珍,朱庆杰.跨断层地下管道破坏的数值模拟[J].福州大学学报(自然科学版),2005,33(Supp.):321-324.
[8]朱庆杰,刘英利,蒋录珍,等.管土摩擦和管径对埋地管道破坏的影响分析[J].地震工程与工程振动,2006,26(3):197-199.
[9]弓培林,靳钟铭.大采高采场覆岩结构特征及运动规律研究[J].煤炭学报,2004,29(1):7-11.
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