预览加载中，请您耐心等待几秒...

强地震作用引起的近断层地表破裂分.pdf

预览
1/10
2/10
3/10
4/10
5/10
6/10
7/10
8/10
9/10
10/10

亲，该文档总共33页，到这已经超出免费预览范围，如果喜欢就直接下载吧～

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

强地震作用引起的近断层地表破裂分 析方法：逆断层 ANAPPROACHTOEVALUATEGROUNDSURFACERUPTURECAUSED BYREVERSALFAULTMOVEMENT 赵纪生1,2陶夏新1,3师黎静1 1.中国地震局工程力学研究所(InstituteofEngineeringMechanics,ChinaEarthquakeAdministration) 2.中国科学院国家冻土工程重点试验室(StateKeyLaboratoryofFrozenSoilEngineering,CAREERI,CAS) 3.哈尔滨工业大学土木工程学院(SchoolofcivilEngineering,HarbinInstituteofTechnology) 2006.3 CONTENT •OVERVIEW •METHODOLOGY •ONSETOFSTRAINLOCALIZATION •EVOLUTIONOFSLIPPAGELINE •CONSTITUTIVEMODEL •INPUTOFTHEPROBLEM •EXAMPLESANDDISCUSSIONS •SOMEPROBLEMS 1.OVERVIEW •PhenomenaofSurfaceRupture --Mostsurfaceruptureisconfinedtoarelativelynarrow zoneafewfeettoafewtensoffeetwide. --insomecasesprimarysurfacerupturealongbranch faultscanbedistributedacrosszoneshundredsoffeet wideormanifestedasbroadwarps •CasualtyandEconomicalDamage TheCountermeasure •reinforcestructure? --takemeasurestoaccommodatewarpingand distributivedeformation •Awayformwheresurfacerupturemaytakeplace --definesetbackdistances EstimationofScaleofSurface •RuptureEmpiricalformulaebasedonearthquake investigation; •NumericalmethodbasedonMechanics StrongFormofAnalysisModel WeakFormofAnalysisModel KeyPoints •SomeConcepts •DetectOnsetConditionoftheRupture •EvolutionPropertiesoftheRupture •ConstitutiveEquationofStressedSoils •NumericalMethod StabilityorFailureofMaterials Stationarywave,Flutter Positivenessofthesecondorderpowerofmaterials, theuniquenessofsolutionofgoverningequations, thebifurcationvariationalprinciples. Bifurcation, Unstable Weakdiscontinuity---strain Strongdiscontinuity---displacementFailure OnsetandEvolutionoftheRupture ConstitutiveEquation(Intact) ConstitutiveEquation(Interface) NumericalMethods •LEM（LocalEnrichmentMethods） •Multigrid-likeprocedures •Generalizedmathematicalhomogenizationtheory •Multiscaleenrichmentbasedonpartitionofunity method •Meshfree •XFEM+PU •XFEM+LevelSet TwostepsandOnestep •Onsetoftheslipline •Evolutionoftheline •Onset+Evolutionoftheline 2.METHODOLOGY •Elasto-plasticsoilbodyunderdislocation •