MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH A Suggested US-Taiwan Cooperative Project A Suggested US-Taiwan Cooperative Project Development of Extreme Hazard Development of Extreme Hazard Induced Bridge Failure Database Induced Bridge Failure Database By George C. Lee University at Buffalo US-Taiwan Bridge Engineering Workshop
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M ULTIDISCIPLINARY C ENTER FOR E ARTHQUAKE E NGINEERING R ESEARCH A Suggested US-Taiwan Cooperative Project Development of Extreme Hazard Induced Bridge.
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MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
A Suggested US-Taiwan Cooperative ProjectA Suggested US-Taiwan Cooperative Project
Development of Extreme Hazard Development of Extreme Hazard Induced Bridge Failure DatabaseInduced Bridge Failure Database
ByGeorge C. Lee
University at Buffalo
US-Taiwan Bridge Engineering Workshop
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
AcknowledgementAcknowledgement
FHWA Project on Multi-hazard Studies Dr. P. Yen Program Manager Project Co-workers: Dr. E. Sternberg University at Buffalo Dr. M. Tong University at Buffalo
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
OutlineOutline
The Need To Consider Multihazards And Extreme Events
The Need of A Platform For Hazards Assessment, Calibration and Comparison.
A possible US-Taiwan Cooperative Project – Database For Earthquake and Hydraulic Hazards
Summary
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
Structural Design (LRFD)Structural Design (LRFD)
Capacity > Demand Safety Margin Is Provided By Using Strength
Reduction Factors For Capacity And Overload Factors For Demand
Various Uncertainties Involved In Establishing These Factors And In Their Proper Combinations
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
UncertaintiesUncertainties
Resistance Design Material Construction Maintenance Etc.
Load Effects Conventional Loads Extreme Events Combinations Etc.
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
UncertaintiesUncertainties
Resistance Design Material Construction Maintenance Etc.
Load Effects Conventional Loads Extreme Events Combinations Etc.
Understand and Reduce Uncertainties in These Issues For Bridge Engineering Application
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
Some Noted Bridge Failure in US.*Some Noted Bridge Failure in US.*
503 Cases of Bridge Failure Between 1989 and 2000 (12 years Period)
Caused of Failure Difficult to Judge (Complex Interaction Between Load Effects And Resistance)
Estimated 80+% of These Failures Are Primarily Due to Extreme Events
* Wardhaua and Hadipriono (2003)
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
Wardhaua And Hadipriono Study Wardhaua And Hadipriono Study
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
Initial Thoughts On A Framework For Initial Thoughts On A Framework For Database DevelopmentDatabase Development
Identify Key Parameters for Hazard Comparison
Methodology To Evaluate and Compare Multi-Hazards Load Effects On Bridges
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
Initial Thoughts On A Framework For Initial Thoughts On A Framework For Database DevelopmentDatabase Development
Development of Multihazard Design Approaches and Procedures
MULTIDISCIPLINARY CENTER FOR EARTHQUAKE ENGINEERING RESEARCH
SummarySummary
Multiple hazard design of highway bridges is a complex problem.
In order to carry out a systematic study to evaluate and compare the extreme hazard load effects on bridges, a uniform methodology is needed, and calibrated with real-world data.
Database may be developed by international partnerships.