Transcript IRCC Overview of PEER

Pacific Earthquake
Engineering
Research Center (PEER)
PEER
Leadership
team
PEER Mission
• Advance performance-based earthquake
engineering to meet the needs of various
stakeholders.
PEER Mission
• Advance performance-based earthquake
engineering to meet the needs of various
stakeholders.
Performance-based earthquake
engineering
Design for the achievement of
specified results rather than
adherence to prescribed means.
(after May 2004)
Prescriptive design approach
O
P
E
N
CI
Vdesign 
W
R
UBC 97, IBC 2000, etc.
•
Linear analysis model
•
Prescribed strength
•
Prescriptive details
•
The outcome:
•
performance an undefined
byproduct of design
•
limited role for engineer
Performance-Based Earthquake
Engineering Concepts
O
P
E
N
O
P
E
N
O
P
E
N
Collapse
Onset
Damage
Threshold
Deformation
PBEE today
IO
LS
CP
PEER contribution
0
25%
0.0
0.0001
0
1
50%
0.001
7
100%
0.01
30
0.25
180
FEMA 356 Performance
Levels
$, % replacement
Casualty rate
Downtime, days
PBEE Approach and Application
Decision Variable
structural
nonstructural
Capital Losses
drift as an EDP
Damage Measure
Engineering Demand
Parameter
Intensity Measure