考虑土体非线性特性的直埋管道-土体系统的动力反应分析
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摘要
本文采用二维有限元方法对连续直埋管道在动力荷载作用下的反应进行分析。管道周围土体采用等效线性粘弹性模型 ;为反映管 -土间的相对滑移 ,在管单元与土单元间加入无厚度Goodman接触单元 ;并利用 Wilson- θ法对管 -土系统进行动力时程反应分析。本文研究了输入波频率 ,输入波幅值 ,管道埋深 ,土体类别和管 -土间摩擦系数等因素对埋管动力反应的影响。
Two\|dimension finite element method (FEM) is employed to analyze the response of straight continuous buried pipeline under dynamic load. The soil surrounding the pipeline is supposed of equivalent linear viscoelastic model. Goodman contact elements are added between pipe elements and soil elements in order to simulate relative slip between pipe and soil. Wilson\|θ method is utilized to compute dynamic time\|history response of soil\|pipe system. The effects of wave frequency and amplitude, buried depth, soil property, and soil\|pipe friction are also studied in the paper.
Two\|dimension finite element method (FEM) is employed to analyze the response of straight continuous buried pipeline under dynamic load. The soil surrounding the pipeline is supposed of equivalent linear viscoelastic model. Goodman contact elements are added between pipe elements and soil elements in order to simulate relative slip between pipe and soil. Wilson\|θ method is utilized to compute dynamic time\|history response of soil\|pipe system. The effects of wave frequency and amplitude, buried depth, soil property, and soil\|pipe friction are also studied in the paper.
引文
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[10 ] 李 昕 ,供水系统地震可靠性分析 [D],大连 :大连理工大学 ,2 0 0 0 . (L i X. Seismicreliability analysis on water supply pipelinesystem[D]. Dalian:Dalian University ofTechnology,2 0 0 0 (in Chinese) )
[2 ] Newmark N W.Problems in wave propagat-ion in soil and rock[A]. Proc. of intern-ational symposium on wave prop- agation anddynamic properties of earth materials[C]Albuquerque,New Mexico,196 7. 7- 2 6 .
[3] 室外给水排水和煤气热力工程抗震设计规范(TJ32 - 78) .现行建筑结构规范大全 [M].北京 :中国建筑工业出版社 ,1994 :10 4 7- 10 57.(Aseismic design code for outdoor watersupply,drainage and gas,heat engineering(TJ32 - 78) .Present Construction and StructureCodes[M]. Beijing:Chinese ConstructionIndustry Press,1994 :10 4 7- 10 57. (inChinese) )
[4 ] 甘水文 ,侯忠良 .地震行波作用下埋设管线的反应计算 [J].地震工程与工程振动 ,1988,8(2 ) :79- 85. (Gan S W and Hou Z L.Response calculation of buried pipeline underseismic wave [J]. Earthquake Engineeringand Engineering Vibration,1988,8(2 ) :79-85.(in Chinese) )
[5] Vassilev V H and Flores- Berrones R SeismicAnalysis of Segmented Buried pipelines[A].Proc. of Eleventh World Conference onEarthquake Engineering [C ]. Paper No.1586 ,1996 .
[6 ] Goodman R E. etc. A model for the mec-hanics of jointed rock[A]. J. of the SoilMechanics and Foundations Division,Proc.ASCE[C].196 8,94 (SM3) :6 37- 6 59.
[7] 陈慧远 ,周 登 .带混凝土防渗墙土石坝的应力应变分析 [J].河海大学学报 ,1987,15(6 ) :99- 112 (Chen H Y and Zhou D. Stress andstrain analysis on earth- rock dam usingconcrete impermeable wall [J]. Journal ofH ehai University,1987,15(6 ) :99- 112 . (inChinese) )
[8] 吴军帅 ,姜 朴 .土与混凝土接触面的动力剪切特性 [J].岩土工程学报 ,1992 ,14(2 ) :6 1-6 6 . (Wu J S,Jiang P. Dynamic shearcharacteristics for soil and concrete contactsurface[J].Chinese Journal of GeotechnicalEngineering,1992 ,14(2 ) :6 1- 6 6 . (inChinese) )
[9] 孔宪京 .连云港核电站工程东护岸结构抗震试验与分析 [R].大连理工大学抗震教研究 ,1998,Z136 6 . (Kong X. J. Structure expe-riments and analysis on eastern retaining wallof L ianyungang nuclear power station [R].Dalian University of Technology,1998,Z136 6 .(in Chinese) )
[10 ] 李 昕 ,供水系统地震可靠性分析 [D],大连 :大连理工大学 ,2 0 0 0 . (L i X. Seismicreliability analysis on water supply pipelinesystem[D]. Dalian:Dalian University ofTechnology,2 0 0 0 (in Chinese) )
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