?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Performance+comparison+of+RC+retrofitted+interior+beam-column+joints+with+CFRP+and+steel+plates&rft.creator=Miranda+Melo%2C+J&rft.creator=Pohoryles%2C+D&rft.creator=Rossetto%2C+T&rft.creator=Varum%2C+H&rft.description=Existing+reinforced+concrete+(RC)+building+structures+constructed+until+the+mid-1970%E2%80%99s%2C+prior+to+the+enforcement+of+modern%0D%0Aseismic+design+philosophies%2C+are+expected+to+behave+poorly+when+subjected+to+earthquake+actions.+The+response+and+damage%0D%0Aevolution+of+RC+structures+when+subjected+to+severe+cyclic+loading%2C+such+as+the+ones+induced+by+earthquakes%2C+are+highly%0D%0Ainfluenced+by+the+beam-column+joint+behavior%2C+as+they+are+responsible+for+the+force+transfer+mechanism+between+columns%0D%0Aand+beams+and+restrain+the+lateral+displacement+of+the+columns.%0D%0AThe+seismic+response+of+existing+RC+structures+with+inadequate+reinforcement+detailing+in+the+beam-column+connections%0D%0Acan+be+improved+by+retrofitting+these+connections.+In+the+literature+several+joint+retrofit+techniques+are+presented%2C+including%0D%0Aconcrete+or+steel+jacketing%2C+carbon+fiber+reinforced+polymer+(CFRP)+wrapping+and+strengthening+with+steel+profiles%2C+plates%0D%0Aor+angles.+These+retrofit+techniques+aim+to+avoid+the+weak-column%2Fstrong-beam+mechanism+by+increasing+the+flexural%0D%0Acapacity+of+the+column+and+also%2C+in+some+cases%2C+to+improve+the+joint+shear+capacity.%0D%0AIn+this+paper+a+series+of+unidirectional+cyclic+tests+carried+out+on+four+full-scale+interior+beam-column+joints+with+transverse%0D%0Abeams+and+slab%2C+with+typical+detailing+of+structures+built+until+the+mid-70%E2%80%99s%2C+are+described.+One+specimen+is+tested+without%0D%0Aretrofit+(control+specimen)%2C+another+is+retrofitted+with+CFRP+and+the+other+two+are+retrofitted+with+steel+profiles+and+plates.%0D%0ABoth+retrofit+solutions+aim+to+increase+the+flexural+strength+of+the+columns+and+the+joint+shear+capacity+and+to+avoid+the%0D%0Aweak-column%2Fstrong-beam+mechanism+identified+in+the+control+specimen+test.+The+selective+weakening+technique+is+applied%0D%0Ato+all+retrofitted+specimens+by+cutting+the+slab+in+both+directions+around+the+joint.+The+main+results+in+terms+of+lateral+forcedisplacement%2C%0D%0Aequivalent+damping%2C+ductility+and+dissipated+energy+evolution+diagrams%2C+as+well+as+damage+description+at+the%0D%0Aend+of+the+tests+are+presented+and+discussed.+The+experimental+results+show+that+the+adopted+retrofit+solutions+can%0D%0Asignificantly+increase+the+maximum+lateral+strength%2C+the+ultimate+ductility+and+the+energy+dissipation+capacity.+Therefore%2C+the%0D%0Aimproved+seismic+performance+of+the+retrofitted+specimens+is+evident+when+compared+with+the+control+specimen+and%0D%0Aconsequently+demonstrates+the+need+of+retrofitting+beam-column+joints+in+order+to+improve+the+global+seismic+behavior+of%0D%0Aexisting+RC+structures.&rft.subject=RC+retrofitting%3B+Beam-column+joint%3B+Full-scale+testing%3B+existing+RC+structures&rft.publisher=National+Information+Centre+of+Earthquake+Engineering&rft.date=2017-01-12&rft.type=Proceedings+paper&rft.publisher=16th+World+Conference+on+Earthquake+Engineering&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+the+16th+World+Conference+on+Earthquake+Engineering.++++National+Information+Centre+of+Earthquake+Engineering%3A+Santiago%2C+Chile.+(2017)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1546257%2F1%2FRossetto_16WCEE%2520PAPER%2520-%25203833%2520-%2520Performance%2520comparison%2520of%2520RC%2520retrofitted%2520interior%2520beam-column%2520joints%2520with%2520FRP%2520and%2520steel%2520platesExtract.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1546257%2F&rft.rights=open