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1、附件2：外文原文J.Cent.SouthUniv.(2015)22:2730−2738DOI:10.1007/s11771-015-2803-4ProgressivecollapseresistingcapacityofreinforcedconcreteloadbearingwallstructuresAlirezaRahai1,AlirezaShahin1,FarzadHatami21.DepartmentofCivilEngineering,AmirkabirUniversityofTechnology(Tehra
2、nPolytechnic)No.424,HafezAve.,P.O.Box.15875-4413,Tehran,Iran;2.Structural&EarthquakeResearchCenter(SERC),AmirkabirUniversityofTechnologyNo.424,HafezAve.,P.O.Box.15875-4413,Tehran,Iran©CentralSouthUniversityPressandSpringer-VerlagBerlinHeidelberg2015Abstract:Reinf
3、orcedconcrete(RC)loadbearingwalliswidelyusedinhigh-riseandmid-risebuildings.Duetothenumberofwallsinplanandreductioninlateralforceportion,thissystemisnotonlystrongeragainstearthquakes,butalsomoreeconomical.Theeffectofprogressivecollapsecausedbyremovalofloadbearing
4、elements,invariouspositionsinplanandstoriesoftheRCloadbearingwallsystemwasevaluatedbynonlineardynamicandstaticanalyses.Forthispurpose,three-dimensionalmodelof10-storystructurewasselected.Theanalysisresultsindicatedstability,strengthandstiffnessoftheRCload-bearing
5、wallsystemagainstprogressivecollapse.Itwasobservedthatthemostcriticalconditionforremovalofloadbearingwallswastheinstantaneousremovalofthesurroundingwallslocatedatthecornersofthebuildingwherethesectionsoftheloadbearingelementswerechanged.Inthiscase,themaximumverti
6、caldisplacementwaslimitedto6.3mmandthestructurefailedafterapplyingtheloadof10timestheaxialloadboredbyremovedelements.Comparisonbetweentheresultsofthenonlineardynamicandstaticanalysesdemonstratedthatthe“loadfactor”parameterwasareasonablecriteriontoevaluatetheprogr
7、essivecollapsepotentialofthestructure.Keywords:reinforcedconcrete(RC)loadbearingwallstructure;progressivecollapse;fibersections;nonlinearanalysis;loadfactormethod1IntroductionThereinforcedconcrete(RC)loadbearingwallsystemisoneofthemostappropriatestructuralsystems
8、formid-risebuildings,whichresultsinthereductionofconstructionalmaterialinadditiontoimprovedstrengthagainstearthquakes.Indeed,duetothedirectconnectionofslabtowa
