简介：Inhighseismiczoneregions,slenderreinforcedconcretestructuralwallsarecommonlyusedinhigh-risebuildingsasamainlateralloadresistingelement.Thesewallsareveryeffectiveinlimitingthelateraldriftofthebuildingduetotheirlargein-planestiffness.However,thepresenceoffloorslabsinfluencesthebehavioroftheshearwall.Also,thecurrentdesignrequirementsdonotaccountforthepresenceoffloorslabs.Tounderstandthebehaviorofwall-slabjunctionsandaddresstheshortcomingsofthecurrentdesignrequirements,theinfluenceoftwoparameters,namely(a)aspectratioand(b)longitudinalreinforcementratioonthebehaviorisstudiednumerically.Itisobservedthatthepresenceoffloorslabsatdifferentlevelstendstopartitionthewallintosquatwallpanelsbetweentwoconsecutivefloors.Thewall-slabjunctionsshowlargestressconcentrationsarisingfromthestrutactioninthesquatpanels.Itisalsoobservedthatthefloorslabscangetsignificantlydamagednearthewall-slabjunctionforlowerverticalreinforcementratiosinthewall.Thus,thecurrentcodeprescribedminimumreinforcementinshearwallsisnotsufficientandneedstoberevisitedatforimprovedperformance.

简介：The2018PaluMW7.5earthquakeandtsunamiattractedgeophysicists'attentionforitsstrikeslipfocalmechanismandmagnitude.Weinspectedthedetailsofthisdisasteranddiscusseditsparticularityandpossiblecausations.Thesubmarinelandslideandspecialterrainconditionscouldhavecontributedtotheunusualsizeofthetsunami.Theearlywarningsystemandthepostdisasterresponseisalsoreviewed.Efficientsocialwarningsandbroadcastsystemsalongwithgoodmaintenanceisessential.Wealsofoundthatenhancingpublicsscientificliteracyisthemostimportantwaytoreducedisasterdamageandcasualties.Moreover,socialconditionsandrebuildingdifficultiesposttsunamiarerelatedasreferenceresourcesforfuturedisastermanagementstrategies.