场地条件对地下管道地震破坏的影响分析
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摘要
地下管道破坏受到场地岩土条件和断层的制约,如何分析场地条件对地下管道地震破坏的影响,是城市地下管道建设中面临的突出问题。采用 ADINA 建模的定义体操作,选定合适的体类型,应用布尔操作实现了管道与上体和断层之间的融合,得到地下管道破坏分析的几何模型。通过模型参数选择,确定了岩土性质、管道特性、断层等模型参数,定义了管上摩擦、地震荷载时间函数、断层荷载和约束条件。依据计算结果,分析了管土摩擦、埋深、断层参数以及断层活动性等场地条件对地下管道地震破坏的影响,并给出了结论和工程建议。
The damage of buried pipeline is controlled by site condition,such as faults,characteristics of rock and soil.Analyzing the influence of site condition on the damage of buried pipeline under earthquake load is the key of earthquake lifeline engineering.By the operation of defintion body in ADINA,the type of site body is selected,and pipeline body is subtracted from site body by Boolean Body Operators.Therefore,the geometry model is obtained.Through model preferences,parameters of the model are defined,such as the characteristics of rock and soil in site,characteristics of pipeline and faults.Time function of earthquake load and displacement load of faults are applied,initial displacements are defined based on the movement of faults,and pipe-soil friction is considered by contact control in ADINA.According to the calculating results,influence of buried depth,parameters of faults, pipe-soil friction,and faults movement is investigated.Some advice for the protection of buried pipeline under earthquake load is proposed.
The damage of buried pipeline is controlled by site condition,such as faults,characteristics of rock and soil.Analyzing the influence of site condition on the damage of buried pipeline under earthquake load is the key of earthquake lifeline engineering.By the operation of defintion body in ADINA,the type of site body is selected,and pipeline body is subtracted from site body by Boolean Body Operators.Therefore,the geometry model is obtained.Through model preferences,parameters of the model are defined,such as the characteristics of rock and soil in site,characteristics of pipeline and faults.Time function of earthquake load and displacement load of faults are applied,initial displacements are defined based on the movement of faults,and pipe-soil friction is considered by contact control in ADINA.According to the calculating results,influence of buried depth,parameters of faults, pipe-soil friction,and faults movement is investigated.Some advice for the protection of buried pipeline under earthquake load is proposed.
引文
[1] Han Yang,Sun Shaoping.Seismic Reliability of Lifeline System[J].Earthquake Engineering Forontiers In The New Millennium,2001,209-213．
[2] Shiro Takada,Jian Wenling,Tengyan Li.Shell-mode Response of buried pipelines to large fault movements[J].Journal of Structural Engineering JSCE,1998,3:44A.
[3] 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(1) :115-121． CHEN Ling-li,LI Jie.Leakage analysis of water supplying networks[J].Earthquake Engineering and Engineering Vibration,2003,23(1) :115-121．
[4] 童林旭.城市生命线系统的防灾减灾问题-日本阪神大地震生命线震害的启示[J].城市发展研究,2000,7(3) :8-12．
[5] 孙绍平,韩阳.生命线地震工程研究述评[J].土木工程学报,2003,36(5) :97-104． SUN Shao-ping,HAN Yang.State-of-the-art of the research on lifeline earthquake engineering[J].China Civil Engineering Journal,2003,36(5) :97-104．
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[7] 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． GAO Hui-ying,FENG Qi-min.Response analysis for buried pipelines through settlement zone[J].Earthquake Engineering and Engineering Vibration,1997,17(1) :68-75．
[8] 赵林,冯启民.埋地管线有限元建模方法研究[J].地震工程与工程振动,2001,21(2) :53-57． ZHAO Lin,FENG Qi-min.Research on methods for establishing FEM model of buried pipelines[J].Earthquake Engineering and Engineering Vibration,2001,21(2) :53-57．
[9] 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． FENG Qi-min,ZHAO Lin.Buckling analysis of buried pipes subjected to fault movements[J].Earthquake Engineering and Engineering Vibration,2001,21(4) :80-87．
[10] 刘爱文,张素灵,胡聿贤等.地震断层作用下埋地管线的反应分析[J].地震工程与工程振动,2002,22(2) :22-27． LIU Ai-wen,ZHANG Su-ling,HU Yu-xian,et al.A method for analyzing response of buried pipeline due to earthquake fault movement[J].Earthquake Engineering and Engineering Vibration,2002,22(2) :22-27．
[11] 朱庆杰,苏幼坡.基岩条件对地震影响系数的影响[J].岩土工程学报,2004,26(2) :198-201． ZHU Qing-jie,SU You-po.Influence of base rock condition on earthquake affecting coefficient[J].Chinese Journal of Geotechnical Engineering,2004,26(2) :198-201．
[12] 朱庆杰,马亚杰,陈艳华.基于神经网络的区域地壳稳定性评价[J].岩土工程学报,2005,27(9) :1 105-1 109． ZHU Qing-jie,MA Ya-jie,CHEN Yan-hua.Evaluation of regional crust based on ANN[J].Chinese Journal of Geotechnical Engineering,2005,27(9) :1 105-1 109．
[13] 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． JIANG Lu-zhen,ZHU Qing-jie.Numerical simulation of underground pipes damage crossing fault[J].Journal of Fuzhou University(Natural Science),2005,33(supp.):321-324．
[14] 弓培林.大采高采场覆岩结构特征及运动规律研究[J].煤炭学报,2004． 2,29(1) :7-11． GONG Pei-lin,etc.Study on the structure characteristics and movement laws of overlying strata with large mining height[J].Journal of China Coal Society,2004． 2,29(1) :7-11．
[2] Shiro Takada,Jian Wenling,Tengyan Li.Shell-mode Response of buried pipelines to large fault movements[J].Journal of Structural Engineering JSCE,1998,3:44A.
[3] 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(1) :115-121． CHEN Ling-li,LI Jie.Leakage analysis of water supplying networks[J].Earthquake Engineering and Engineering Vibration,2003,23(1) :115-121．
[4] 童林旭.城市生命线系统的防灾减灾问题-日本阪神大地震生命线震害的启示[J].城市发展研究,2000,7(3) :8-12．
[5] 孙绍平,韩阳.生命线地震工程研究述评[J].土木工程学报,2003,36(5) :97-104． SUN Shao-ping,HAN Yang.State-of-the-art of the research on lifeline earthquake engineering[J].China Civil Engineering Journal,2003,36(5) :97-104．
[6] 毛建猛,李鸿晶.跨越断层地下管线震害因素分析[J]. 国际地震动态,2005,23(4) :27-31． MAO Jian-meng,LI Hong-jing.Analysis of seismic damage on buried pipeline crossing a fault[Jl.Recent Developments in World Seismology,2005,23(4) :27-31．
[7] 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． GAO Hui-ying,FENG Qi-min.Response analysis for buried pipelines through settlement zone[J].Earthquake Engineering and Engineering Vibration,1997,17(1) :68-75．
[8] 赵林,冯启民.埋地管线有限元建模方法研究[J].地震工程与工程振动,2001,21(2) :53-57． ZHAO Lin,FENG Qi-min.Research on methods for establishing FEM model of buried pipelines[J].Earthquake Engineering and Engineering Vibration,2001,21(2) :53-57．
[9] 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． FENG Qi-min,ZHAO Lin.Buckling analysis of buried pipes subjected to fault movements[J].Earthquake Engineering and Engineering Vibration,2001,21(4) :80-87．
[10] 刘爱文,张素灵,胡聿贤等.地震断层作用下埋地管线的反应分析[J].地震工程与工程振动,2002,22(2) :22-27． LIU Ai-wen,ZHANG Su-ling,HU Yu-xian,et al.A method for analyzing response of buried pipeline due to earthquake fault movement[J].Earthquake Engineering and Engineering Vibration,2002,22(2) :22-27．
[11] 朱庆杰,苏幼坡.基岩条件对地震影响系数的影响[J].岩土工程学报,2004,26(2) :198-201． ZHU Qing-jie,SU You-po.Influence of base rock condition on earthquake affecting coefficient[J].Chinese Journal of Geotechnical Engineering,2004,26(2) :198-201．
[12] 朱庆杰,马亚杰,陈艳华.基于神经网络的区域地壳稳定性评价[J].岩土工程学报,2005,27(9) :1 105-1 109． ZHU Qing-jie,MA Ya-jie,CHEN Yan-hua.Evaluation of regional crust based on ANN[J].Chinese Journal of Geotechnical Engineering,2005,27(9) :1 105-1 109．
[13] 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． JIANG Lu-zhen,ZHU Qing-jie.Numerical simulation of underground pipes damage crossing fault[J].Journal of Fuzhou University(Natural Science),2005,33(supp.):321-324．
[14] 弓培林.大采高采场覆岩结构特征及运动规律研究[J].煤炭学报,2004． 2,29(1) :7-11． GONG Pei-lin,etc.Study on the structure characteristics and movement laws of overlying strata with large mining height[J].Journal of China Coal Society,2004． 2,29(1) :7-11．
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