ATC USA Japan Improving Earthquake Resiliency in ... · Seismic Strengthening Guidelines • Volume...
Transcript of ATC USA Japan Improving Earthquake Resiliency in ... · Seismic Strengthening Guidelines • Volume...
Improving Earthquake Resiliency in Developing
Cities
Dr. Hideki Kit Miyamoto, S.E.
The World Bank Project in Manila
Typical Building Construction
Typical School
Seismic Risk Identification and Prioritization
Seismic hazard
Building vulnerability
Exposure data
Risk Identification of Buildings
Impact EvaluationImpact
Evaluation
Prior Studies
Metro Manila Existing SchoolsBuilding Damage Index
Metro Manila Existing SchoolsProjected Fatalities per Building
25% of fatalities (6385) in 5% of buildings (186)
80% of fatalities (19330) in 40% of buildings (1466)
3,821 Buildings 24,400 Fatalities (of 2.15 million)
Cost Analysis
Buildings StrengtheningCost
StudentLives
Worst 5% (190) $40 ‐ 80M 25% (6,380)
Worst 40% (1500) $180‐360M 80%(19,330)
Implementation
Seismic Strengthening Guidelines
• Volume I – Simplified methodology for evaluation and
strengthening: Based on the National Code (NSCP) and FEMA 356/ASCE 41
• Volume II – Atypical buildings, PBD
• Volume III – Design examples for typical school buildings
Shear wall retrofit
BRBF or Viscous Damper retrofit
Key Findings • Cities can systematically retrofit certain
structures and greatly reduce the number of fatalities
• Seismic risk management in developing cities is critical and feasible.
D i s a s t e r R e c o n s t r u c t i o n | 1 2 0 , 0 0 0 D a m a g e R e p a i r P r o g r a m , H a i t i
We make the world a better place.