validation and utilization of physics-based simulated
TRANSCRIPT
Validation and Utilization of Physics-Based Simulated Ground Motions for Bridge Performance Assessment
Investigators: Jawad Fayaz1, Sarah Azar2, Mayssa Dabaghi2 and Farzin Zareian1
1Department of Civil and Environmental Engineering, University of California, Irvine2Department of Civil and Environmental Engineering, American University of Beirut, Lebanon
Sim #1
Sim #2
Sim #100
20
15
10
5
0
0.15
0.10
0.05
0.0
-0.05
-0.10
-0.15
0 1 2 3 4 5
GM History
Zero Level
Zero Level Crossing
Cumulative Zero Level Crossings
2nd Order Polynomial
0 1 2 3 4 5
NGAWest2 Recorded GMs Physics-Based GMs (Cybershake 15.12)
๐ฅ๐ง(๐ฌ๐ซ๐ท)= ๐๐๐๐ + ๐๐ ๐๐ + ๐๐๐๐ + ๐๐๐๐+ ๐๐๐๐๐ + ๐๐๐๐ + ๐๐๐๐ + ๐๐ ๐๐
๐ฅ๐ง(๐น๐๐)= ๐๐๐๐ + ๐๐ ๐๐ + ๐๐๐๐ + ๐๐๐๐+ ๐๐๐๐๐ + ๐๐๐๐ + ๐๐๐๐ + ๐๐ ๐๐
RZZ Parameters
Engineering Demand Parameters (EDP)
๐ฅ๐ง ๐ฌ๐ซ๐ท
= ๐๐ฐ๐,๐๐๐+ ๐๐ฐ๐,๐๐๐
+ ๐๐๐๐๐ ,๐๐๐+ ๐๐๐๐๐ ,๐๐๐
+ ๐๐โฒ๐๐๐+ ๐๐โฒ๐๐๐
+ ๐๐ป๐๐๐ ,๐๐๐+ ๐๐ป๐๐๐ ,๐๐๐
Rot50CDR
Acc YAcc X
CyberShake 15.12
(All Sites)
Recorded GM Sites
Selected CyberShake
Sites
CB14 Form CB14 FormLinear Regression Fitted Normal Distribution
100 CyberShake Simulations
Recorded GMs
๐๐ฏ๐๐ง๐ญ ๐๐๐ซ๐๐ฆ๐๐ญ๐๐ซ๐ฌ (๐ด,๐น, ๐ฝ๐๐๐) ๐๐๐ ๐๐๐ซ๐๐ฆ๐๐ญ๐๐ซ๐ฌ (๐ฐ๐, ๐๐๐๐ , ๐ซ๐โ๐๐) ๐๐๐(๐น๐๐๐๐๐ช๐ซ๐น)
Goal: Compare and Validate
Simulated GMs against the
Recorded GMs using statistical
relationships between the
corresponding Event parameters,
RZZ parameters, and EDP of
Bridge structures.
Conclusions:
1. RZZ parameters can be too
stringent to perform validation of
simulated ground motions.
2. Relations between the Event
parameters and EDP, and RZZ
parameters and EDP for
recorded and simulated GMs
tend to be statistically similar.