基于地震波入射角的地下管道地震应力计算
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摘要
针对目前常用的地下管道地震应力的简化计算方法未考虑地震波入射方向和地震地面运动加速度的问题,提出了基于地震波入射角的地下管道地震应力的简化计算方法。首先,以弹性地基梁理论和地震波动力学理论为基础,引入地震波入射角φ,根据管土间相互作用的原理,推导了管土之间相互作用系数—变形传递系数,求得了基于地震波入射角的地下管道直线段和弯头段的地震应力的理论计算公式,并且考虑了地震地面运动加速度。然后,通过计算实例分析了地震波入射角对于不同口径埋地管道最大地震应力的影响,与目前国内外常用地下管道地震应力计算方法对比,结果表明该方法是一种简单易行、可靠合理的方法。该方法对工程实际中地下管道的抗(防)震设计具有一定的参考价值。
Because of unconsidering the incident angle of earthquake wave and earthquake ground motion acceleration in current common calculation methods of underground pipeline,a new calculation method of earthquake stress of underground pipeline was presented considering the incident angle of earthquake wave.At first,based on the elastic foundation beam(EFB) theory and dynamics of earthquake wave,the model of movement deformation for underground pipeline under earthquake is set up,the incident angle of earthquake wave is introduced into the analysis of interaction between underground pipeline and soil,the coefficient of interaction between underground pipeline and soil-deformation transmission is deduced according to the characteristics of interaction between pipeline and soil,and the earthquake stress formulas for underground pipeline is gotten.Then,an example is studied by the new method to analyze the influence of the incident angle of earthquake wave on the maximum earthquake stresses of different diameter underground pipelines,compared with several common methods at home and abroad,the calculated results show that the new method is simple,effective and rational,and this method can provide reference to seismic design of underground pipeline in engineering practice.
Because of unconsidering the incident angle of earthquake wave and earthquake ground motion acceleration in current common calculation methods of underground pipeline,a new calculation method of earthquake stress of underground pipeline was presented considering the incident angle of earthquake wave.At first,based on the elastic foundation beam(EFB) theory and dynamics of earthquake wave,the model of movement deformation for underground pipeline under earthquake is set up,the incident angle of earthquake wave is introduced into the analysis of interaction between underground pipeline and soil,the coefficient of interaction between underground pipeline and soil-deformation transmission is deduced according to the characteristics of interaction between pipeline and soil,and the earthquake stress formulas for underground pipeline is gotten.Then,an example is studied by the new method to analyze the influence of the incident angle of earthquake wave on the maximum earthquake stresses of different diameter underground pipelines,compared with several common methods at home and abroad,the calculated results show that the new method is simple,effective and rational,and this method can provide reference to seismic design of underground pipeline in engineering practice.
引文
[1]侯忠良主编.地下管线抗震[M].学术书刊出版社,1990.(HOU Zhongliang.Earthquake Resistance of Un-derground Pipeline[M].Beijing:Academic Press,1990.(in Chinese)
[2]Yu-Ao He and Jian-Wen Liang.Finite element anal-ysis of three-way joint of buried pipelines under earth-quake load[C].Proc.of Third U.S.Conference onLifeline Earthquake-Engineering,August 22-24,1991,UCLA,Los Angeles,California.
[3]王海波,林皋.半无限弹性介质中管线地震反应分析[J].土木工程学报,1987,20(3):80-91.(WANGHaibo,LIN Gao.Seismic response analysis of pipeline insemi-infinite elastic medium[J].Chinese Journal ofCivil Engineering,1987,20(3):80-91.(in Chinese)
[4]Yaw-Jeng Chiou,and Shue-Yeong Chi.Limit loads ofburied pipelines in inelastic soil medium[J],Journal ofEngineering Mechanics,ASCE,1993,No.5:938-954.
[5]李杰.生命线工程抗震-基础理论与应用[M].北京:科学出版社,2005.(LI Jie.Earthquake Resistanceof Lifeline Engineering[M].Beijing:Science Press,2005.(in Chinese))
[6]陈冠卿.高地震烈度区地下管道抗震强度计算[J].油气储运,1985,4(1):37-50.(CHEN Guanqing.Earthquake resistance calculation of underground pipe-line in high intensity areas[J].Storage and Transporta-tion of Gas and Oil,1985,4(1):37-50.(in Chinese)
[7]王世圣,张安,等.地震荷载作用下埋地管道强度的简化计算[J].油气储运,2000,19(11):19-22.(WANG Shisheng,ZHANG An.Simplified calculationof buried pipeline strength under earthquake[J].Stor-age and Transportation of Gas and Oil,2000,19(11):19-22.(in Chinese)
[8]Kamel EI Hmadi etal..Soil spring for buried pipelineaxial motion.Journal of Geotechnical Engineering[J],1988,11:1335-1339.
[9]黄强兵,彭建兵,等.埋地管道在地震波作用下的抗震性能分析[J].工程勘察,2004,(3):64-67.(HUANG Qiangbing.Peng Jianbing.Analysis on seis-mic performance of buried pipeline under earthquakewave[J].Geotechnical Investigation&Surveying,2004,(3):64-67.(in Chinese))
[10]刘学杰,侯忠良.地下管网震害预测与抗震对策.第三届全国地震工程论文集[C].1990.(LIU Xuejie,HOU Zhongliang.Seismic hazard prediction and coun-termeasure of underground pipeline network.The 3thNational Seismic Engineering Symposium[C].1990.(in Chinese))
[11]Б.Г.科列涅夫编,沈聚敏高伯扬译.地震动下工程结构物的动力计算[M].北京:地震出版社,1994.(SHENJumin,GAO Baiyang(Translators).DynamicsCalculation of Engineering Structure under Earthquake[M].Beijing:Seismic Press,1994.(in Chinese))
[12]赵成刚,冯启民,等.生命线地震工程[M].北京:地震出版社,1994.(Zhao Chenggang,Feng Qimin.Earthquake Engineering of Lifeline[M].Beijing:Seismic Press,1994.(in Chinese))
[13]SY/T0450-97.输油气地下刚质管道抗震设计规范[S].石油工业出版社,1998.(Seismic design codefor oil and gas buried steel pipeline(SY/T0450-97)[S].Beijing:Petroleum Industry Press,1998.(inChinese)
[14]GB50032-2003.室外给水排水和燃气热力工程抗震设计规范[S].中国建筑工业出版社,2006.(Codefor seismic design of outdoor water supply,sewerage,gas and heating engineering(GB50032-2003)[S].Beijing:China archi-tecture and Industrial Press,2003.(in Chinese))
[15]阎盛海.地下结构抗震[M].大连:大连理工大学出版社,1989.(YAN Shenghai.Earthquake Resistanceof Underground Structure[M].Dalian:Dalian Scienceand Technology University Press,1989.(in Chinese))
[16]戈革等编.地震波动力学基础[M].北京:石油工业出版社,1980.(GE Gai.Dynamics Principles ofEarthquake Wave[M].Beijing:Petroleum IndustryPress,1990.(in Chinese))
[2]Yu-Ao He and Jian-Wen Liang.Finite element anal-ysis of three-way joint of buried pipelines under earth-quake load[C].Proc.of Third U.S.Conference onLifeline Earthquake-Engineering,August 22-24,1991,UCLA,Los Angeles,California.
[3]王海波,林皋.半无限弹性介质中管线地震反应分析[J].土木工程学报,1987,20(3):80-91.(WANGHaibo,LIN Gao.Seismic response analysis of pipeline insemi-infinite elastic medium[J].Chinese Journal ofCivil Engineering,1987,20(3):80-91.(in Chinese)
[4]Yaw-Jeng Chiou,and Shue-Yeong Chi.Limit loads ofburied pipelines in inelastic soil medium[J],Journal ofEngineering Mechanics,ASCE,1993,No.5:938-954.
[5]李杰.生命线工程抗震-基础理论与应用[M].北京:科学出版社,2005.(LI Jie.Earthquake Resistanceof Lifeline Engineering[M].Beijing:Science Press,2005.(in Chinese))
[6]陈冠卿.高地震烈度区地下管道抗震强度计算[J].油气储运,1985,4(1):37-50.(CHEN Guanqing.Earthquake resistance calculation of underground pipe-line in high intensity areas[J].Storage and Transporta-tion of Gas and Oil,1985,4(1):37-50.(in Chinese)
[7]王世圣,张安,等.地震荷载作用下埋地管道强度的简化计算[J].油气储运,2000,19(11):19-22.(WANG Shisheng,ZHANG An.Simplified calculationof buried pipeline strength under earthquake[J].Stor-age and Transportation of Gas and Oil,2000,19(11):19-22.(in Chinese)
[8]Kamel EI Hmadi etal..Soil spring for buried pipelineaxial motion.Journal of Geotechnical Engineering[J],1988,11:1335-1339.
[9]黄强兵,彭建兵,等.埋地管道在地震波作用下的抗震性能分析[J].工程勘察,2004,(3):64-67.(HUANG Qiangbing.Peng Jianbing.Analysis on seis-mic performance of buried pipeline under earthquakewave[J].Geotechnical Investigation&Surveying,2004,(3):64-67.(in Chinese))
[10]刘学杰,侯忠良.地下管网震害预测与抗震对策.第三届全国地震工程论文集[C].1990.(LIU Xuejie,HOU Zhongliang.Seismic hazard prediction and coun-termeasure of underground pipeline network.The 3thNational Seismic Engineering Symposium[C].1990.(in Chinese))
[11]Б.Г.科列涅夫编,沈聚敏高伯扬译.地震动下工程结构物的动力计算[M].北京:地震出版社,1994.(SHENJumin,GAO Baiyang(Translators).DynamicsCalculation of Engineering Structure under Earthquake[M].Beijing:Seismic Press,1994.(in Chinese))
[12]赵成刚,冯启民,等.生命线地震工程[M].北京:地震出版社,1994.(Zhao Chenggang,Feng Qimin.Earthquake Engineering of Lifeline[M].Beijing:Seismic Press,1994.(in Chinese))
[13]SY/T0450-97.输油气地下刚质管道抗震设计规范[S].石油工业出版社,1998.(Seismic design codefor oil and gas buried steel pipeline(SY/T0450-97)[S].Beijing:Petroleum Industry Press,1998.(inChinese)
[14]GB50032-2003.室外给水排水和燃气热力工程抗震设计规范[S].中国建筑工业出版社,2006.(Codefor seismic design of outdoor water supply,sewerage,gas and heating engineering(GB50032-2003)[S].Beijing:China archi-tecture and Industrial Press,2003.(in Chinese))
[15]阎盛海.地下结构抗震[M].大连:大连理工大学出版社,1989.(YAN Shenghai.Earthquake Resistanceof Underground Structure[M].Dalian:Dalian Scienceand Technology University Press,1989.(in Chinese))
[16]戈革等编.地震波动力学基础[M].北京:石油工业出版社,1980.(GE Gai.Dynamics Principles ofEarthquake Wave[M].Beijing:Petroleum IndustryPress,1990.(in Chinese))
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