面板堆石坝三维耦合非线性数值计算
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摘要
基于发展的堆石料的静动力耦合模型,提出一种可以在加载过程中每一时步进行外荷载和位移的平衡迭代的三维有限元分析方法,一次性完成堆石坝的施工、蓄水、地震等渐近加载过程的数值仿真模拟.应用该方法对公伯峡面板堆石坝进行全过程的数值计算,得到坝体最大沉降为98.7cm,面板峰值动拉应力为5.36MPa;进一步说明计算得到的坝体静动态响应更接近实际情况.
On the basis of static-dynamic force coupling model of rockfill material,a 3D finite element method is developed in which exterior loads and displacements can be evenly iterated in each step during the process of loading.It can complete the numerical simulation of construction of rockfill dam,storing water and seismic effect once only.This method is applied in Gong Boxia project to numerically analyze the whole process of rockfill dam.The maximum vertical displacement of the dam is 98.7 cm and the maximum dynamic major principal stress on slab is 5.36 MPa.The results approve that the static and dynamic response calculated with this method further approximate to actual circumstance.
On the basis of static-dynamic force coupling model of rockfill material,a 3D finite element method is developed in which exterior loads and displacements can be evenly iterated in each step during the process of loading.It can complete the numerical simulation of construction of rockfill dam,storing water and seismic effect once only.This method is applied in Gong Boxia project to numerically analyze the whole process of rockfill dam.The maximum vertical displacement of the dam is 98.7 cm and the maximum dynamic major principal stress on slab is 5.36 MPa.The results approve that the static and dynamic response calculated with this method further approximate to actual circumstance.
引文
[1] HanGuocheng,KongXianjing,LianZhengying.Static dynamicnumericalanalysisforearth rockfilldam[A].In:Proceedingsofthe10thJapaneseEarthquakeEngineeringSymposium[C].Yokohama,Japan:1998,2471—2474.
[2] BatheKJ.FiniteElementProceduresinEngineeringAnalysis[M].NewJersey:Prentice Hall,Inc,1982.
[3] OwenDRJ,HintonE.FiniteElementsinPlasticity:TheoryandPractice[M].Swansea,UK:PineridgePr,1980.
[4] 吴兴征,栾茂田,阴吉英.面板堆石坝应力与变形弹塑性有限元计算与分析[J].大连理工大学学报,2000,40(5):602—608.WuXingzheng,LuanMaotian,YinJiying.Elasto plasticfiniteelementanalysesofstressesanddeformationsofconcretefacedrockfilldam[J].JournalofDalianUniversityofTechnology,2000,40(5):602—608.
[5] 吴兴征,栾茂田,李相菘.复杂加载路径下堆石料动力本构模型及数值模拟[J].世界地震工程,2001,17(1):9—14.WuXingzheng,LuanMaotian,LiXiangsong.Bounding surfacehypoplasticmodelforrockfillmaterialsundercomplexloadingpathsanditsverification[J].WorldInformationonEarthquakeEngineering,2001,17(1):9—14.
[6] 孙焕纯,曲乃泗,林家浩.高等计算结构动力学[M].大连:大连理工大学出版社,1992.SunHuanchun,QuNaisi,LinJiahao.AdvancedComputationalStructuralDynamics[M].Dalian:DalianUniversityofTechnologyPress,1992.
[7] 韩国城,孔宪京,李俊杰.面板堆石坝动力破坏性态及抗震措施实验研究[J].水利学报,1990(5):61—67.HanGuocheng,KongXianjing,LiJunjie.Studyondynamicfailurefeatureandearthquakeresistantmeasuresofconcreterockfilldams[J].JournalofHydraulicEngineering,1990(5):60—67.
[8] 沈珠江,徐 刚.堆石料的动力变形特性[J].水利水运科学研究,1996(2):143—150.ShenZhujiang,XuGang.Deformationbehaviorofrockmaterialsundercyclicloading[J].Hydro ScienceandEngineering,1996(2):143—150.
[2] BatheKJ.FiniteElementProceduresinEngineeringAnalysis[M].NewJersey:Prentice Hall,Inc,1982.
[3] OwenDRJ,HintonE.FiniteElementsinPlasticity:TheoryandPractice[M].Swansea,UK:PineridgePr,1980.
[4] 吴兴征,栾茂田,阴吉英.面板堆石坝应力与变形弹塑性有限元计算与分析[J].大连理工大学学报,2000,40(5):602—608.WuXingzheng,LuanMaotian,YinJiying.Elasto plasticfiniteelementanalysesofstressesanddeformationsofconcretefacedrockfilldam[J].JournalofDalianUniversityofTechnology,2000,40(5):602—608.
[5] 吴兴征,栾茂田,李相菘.复杂加载路径下堆石料动力本构模型及数值模拟[J].世界地震工程,2001,17(1):9—14.WuXingzheng,LuanMaotian,LiXiangsong.Bounding surfacehypoplasticmodelforrockfillmaterialsundercomplexloadingpathsanditsverification[J].WorldInformationonEarthquakeEngineering,2001,17(1):9—14.
[6] 孙焕纯,曲乃泗,林家浩.高等计算结构动力学[M].大连:大连理工大学出版社,1992.SunHuanchun,QuNaisi,LinJiahao.AdvancedComputationalStructuralDynamics[M].Dalian:DalianUniversityofTechnologyPress,1992.
[7] 韩国城,孔宪京,李俊杰.面板堆石坝动力破坏性态及抗震措施实验研究[J].水利学报,1990(5):61—67.HanGuocheng,KongXianjing,LiJunjie.Studyondynamicfailurefeatureandearthquakeresistantmeasuresofconcreterockfilldams[J].JournalofHydraulicEngineering,1990(5):60—67.
[8] 沈珠江,徐 刚.堆石料的动力变形特性[J].水利水运科学研究,1996(2):143—150.ShenZhujiang,XuGang.Deformationbehaviorofrockmaterialsundercyclicloading[J].Hydro ScienceandEngineering,1996(2):143—150.
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