管道埋深对管-土耦合应力的影响规律浅析
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摘要
考虑管土间应力的耦合特性、管道在动力作用下强烈的非线性特征等,讨论了管土耦合应力在各种典型工况下受管道埋深因素影响的变化规律.结果表明:管道埋深对管土耦合应力起着重要的影响作用,为管道系统的可靠性设计和正常运行的动态控制提供了必要的计算实例及技术依据.
In consideration of the coupling characteristics of pipe soil stresses and nonlinear property of pipelines under dynamic loads, the regularity of pipe soil stress affected by the buried depth of pipes is discussed for different working conditions. The result shows that the buried depth is of great influences on the pipe soil stress. The research provides a necessary calculation example and technical basis for reliability design and dynamic control of normal operation of pipe systems.
In consideration of the coupling characteristics of pipe soil stresses and nonlinear property of pipelines under dynamic loads, the regularity of pipe soil stress affected by the buried depth of pipes is discussed for different working conditions. The result shows that the buried depth is of great influences on the pipe soil stress. The research provides a necessary calculation example and technical basis for reliability design and dynamic control of normal operation of pipe systems.
引文
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[3]邵炜,金峰,王光纶.用于接触面模拟的非线性薄层单元[J].清华大学学报(自然科学版),1999(2):34～38.
[4]HungH H,YangY B.Elasticwavesinvisco elastichalf spacegeneratedbyvariousvehiclelosds[J].Soildynamicsandearthquakeengineering,2001,21(1):1～17.
[5]格赫显AC.管道的抗震设计施工与监护[M].刘昆译.北京:地震出版社,1992.74～75.
[6]JacquelineVRMusman,AlvaroMCosta,ClaudioAmaral,etal.Pipelinevisualization,simulationandmonitoringinunstableareasaffectedbysoilmovementsatSerraDoMar brazil[A].ProceedingsofIPC'024thInternationalPipelineConference[C].September29 October3,2002,Calgary,Alberta,Canada.202～207
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[9]TakadaS,HigashiS.ShellmodelFEManalysisforjointedburiedpipelines[A].ProcofChina JapanSymponLifelineEarthqEng[C].Beijing:SciencePress,1990.145～152.
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