简介：Withthedevelopmentandimplementationofperformance-basedearthquakeengineering,harmonizationofperformancelevelsbetweenstructuralandnonstructuralcomponentsbecomesvital.Evenifthestructuralcomponentsofabuildingachieveacontinuousorimmediateoccupancyperformancelevelafteraseismicevent,failureofarchitectural,mechanicalorelectricalcomponentscanlowertheperformanceleveloftheentirebuildingsystem.Thisreductioninperformancecausedbythevulnerabilityofnonstructuralcomponentshasbeenobservedduringrecentearthquakesworldwide.Moreover,nonstructuraldamagehaslimitedthefunctionalityofcriticalfacilities,suchashospitals,followingmajorseismicevents.Theinvestmentinnonstructuralcomponentsandbuildingcontentsisfargreaterthanthatofstructuralcomponentsandframing.Therefore,itisnotsurprisingthatinmanypastearthquakes,lossesfromdamagetononstructuralcomponentshaveexceededlossesfromstructuraldamage.Furthermore,thefailureofnonstructuralcomponentscanbecomeasafetyhazardorcanhamperthesafemovementofoccupantsevacuatingbuildings,orofrescueworkersenteringbuildings.Incomparisontostructuralcomponentsandsystems,thereisrelativelylimitedinformationontheseismicdesignofnonstructuralcomponents.Basicresearchworkinthisareahasbeensparse,andtheavailablecodesandguidelinesareusually,forthemostpart,basedonpastexperiences,engineeringjudgmentandintuition,ratherthanonobjectiveexperimentalandanalyticalresults.Often,designengineersareforcedtostartalmostfromsquareoneaftereachearthquakeevent:toobservewhatwentwrongandtotrytopreventrepetitions.Thisisaconsequenceoftheempiricalnatureofcurrentseismicregulationsandguidelinesfornonstructuralcomponents.Thisreviewpapersummarizescurrentknowledgeontheseismicdesignandanalysisofnonstructuralbuildingcomponents,identifyingmajorknowledgegapsthatwillneedtobefilledbyfutureresearch.Furthe