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“THE 2010 CHILE, Mw=8.8 EARTHQUAKE”
G. Rodolfo SARAGONIISCC Scientific Committee Member
Sergio RUIZINTERNATIONAL SEISMIC SAFETY CENTRE, NSNI/IAEA
TYPES OF EARTHQUAKES
• INTERPLATE THRUST SUBDUCTION EARTHQUAKES(CHILE 2010 EARTHQUAKE)
• INTRAPLATE SUBDUCTION EARTHQUAKES
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• CORTICAL EARTHQUAKES (SUPERFICIAL RELATED WITH FAULTS)
• STRIKE SLIP FAULT DUE TO INTERPLATE INTERACTION (MAGALLANES FAGNANO FAULT)
RECORDED ACCELEROGRAMS
• MANY ACCELEROGRAMS RECORDED IN SANTIAGO AT GROUND LEVEL, HIGH RISE BUILDINGS, BRIDGES, ISOLATED BUILDINGS and METRO.
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BUILDINGS and METRO.• RECORDED ACCELEROGRAMS AT
GROUND LEVEL IN THE MOST DAMAGE CITIES
DAMAGE TO BUILDINGS
• MOST BUILDINGS DESIGNED ACCORDING TO SEISMIC CHILEAN CODE Nch 433 “SEISMIC DESIGN OF BUILDINGS” PERFORMED WELL
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BUILDINGS” PERFORMED WELL WITHOUT COLLAPSE
DAMAGE TO BRIDGES
• MOST OF THE BRIDGES DESIGNED ACCORDING TO CHILEAN CODE FOR BRIDGES PERFORMED WELL
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SEISMIC PERFORMANCE OF RESEARCH NUCLEAR REACTOR
• CHILE HAS TWO RESEARCH NUCLEAR REACTORS IN SANTIAGO, BOTH PERFORMED WELL DURING THE EARTHQUAKE.
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EARTHQUAKE. • THE REACTORS ARE: • LA REINA IN OPERATION • LO AGUIRRE DISCONTINUED
RESEARCH NUCLEAR REACTOR LO AGUIRRE - SANTIAGOUNDAMAGED (PGA = 0.3 g).SMALL CRACK IN THE UPPER ANCHORAGE OF THE STACK
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RESEARCH NUCLEAR REACTOR LO AGUIRRE - SANTIAGOUNDAMAGED (PGA = 0.3 g).En celda de alta actividad sobre plataforma depiscina se observa cemento suelto en dos pernos
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REACTOR CELL LOOSE CONCRETE IN TWO ANCHOR BOLTS
RESEARCH NUCLEAR REACTOR LO AGUIRRE - SANTIAGOUNDAMAGED (PGA = 0.3 g).
CONNECTIONS BETWEEN MAIN AND SECONDARY BUILDINGS
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RESEARCH NUCLEAR REACTOR LO AGUIRRE - SANTIAGOUNDAMAGED (PGA = 0.3 g).CONNECTIONS BETWEEN MAIN AND SECONDARY BUILDINGS
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LOOSE CONCRETE IN ANCHOR BOLTS
CONCLUSIONS
• THE TWO RESEARCH NUCLEAR REACTORS IN SANTIAGO PERFORMED UNCRACKED FOR THE Mw=8.8 CHILEAN EARTHQUAKE.
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EARTHQUAKE.• THE PGA MEASURED IN SANTIAGO IN
STIFF SOIL WAS 0.2-0.3g
CONCLUSIONS
• MOST OF BRIDGES DESIGNED RECORDING TO CHILEAN CODE PERFORMED WELL
• IMPORTANT DAMAGE AND NUMBER OF
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• IMPORTANT DAMAGE AND NUMBER OF VICTIMS DUE TO TSUNAMI MOST OF ADOBE HOUSE PERFORMED WELL.
• THE EARTHQUAKE WAS RECORDED FOR MANY ACCELEROGRAMS