Induced Bridge Failure Database

dearmeltedUrban and Civil

Nov 25, 2013 (3 years and 11 months ago)

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A Suggested US
-
Taiwan Cooperative Project



Development of Extreme Hazard
Induced Bridge Failure Database

By

George C. Lee

University at Buffalo

US
-
Taiwan Bridge Engineering Workshop

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Acknowledgement


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

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Outline


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

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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


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Uncertainties

Resistance



Design


Material


Construction


Maintenance


Etc.

Load Effects


Conventional Loads


Extreme Events


Combinations


Etc.

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Uncertainties

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

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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)

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Wardhaua And Hadipriono Study

Externally Caused Failures (Extensive Loads)



Hydraulic



52.88%



Collision



11.73%



Overload



8.75%



Earthquake



3.38%



Fire




3.18%



Ice




1.99%



Storm/Hurricane


0.4%







82.31%

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Bridge Failures Since 2003


2004 India Ocean Tsunami (Numerous
Publications)


2005 Katrina Disaster (MCEER 2005, NIST
2006)


Other Extreme Events Not Yet
Documented/Published



Strong Indication That Extreme Events
Have Multihazard Features

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Bridge Failures Since 2003


2004 India Ocean Tsunami (Numerous
Publications)


2005 Katrina Disaster (MCEER 2005, NIST
2006)


Other Extreme Events Not Yet
Documented/Published



Strong Indication That Extreme Events
Have Multihazard Features

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The Need For A Platform


To Begin A Sustained And Organized
Database Development Effort For Design
Against Extreme Events



Initial Phase To Establish Standardized
Definitions And Ground Rules For
Multihazard Extreme Events

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Categories Of Multihazard
Extreme Events

1.
Single Event

2.
Combined Multihazard Event

3.
Consequent Multihazard Event

4.
Subsequent Multihazard Event

5.
Simultaneous Multihazard Event


Note: The above are listed in Approximate order
from more to least likelihood of occurrence

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A Suggested US

Taiwan Cooperative
Project On Bridge Engineering


Development of Earthquakes and Hydraulic
Hazards Database For Highway Bridges


Scope:


Emphasis given to bridge damage modes and related
issues due to extreme events in selected regions.


Express this information on an electronic platform
according to a set of definitions and format to be
established.

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Initial Thoughts On A Framework For
Database Development

Triggering
Event

Meteorological
(Hurricane,
Typhoons,

Heavy Rain Fall)

Geological

(Earthquake)


Induced
Geomorphic and
Hydrological
Hazards

Damage and
Failure Modes of
Highway (Standard)
Bridges Due to
Single Event,
Combined,
Consequent and
Subsequent
Multihazard Events

Combined, Consequent
& Subsequent
Multihazard Platform

Database
Information

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Initial Thoughts On A Framework For
Database Development

Triggering
Event

Meteorological
(Hurricane,
Typhoons,

Heavy Rain Fall)

Geological

(Earthquake)


Induced
Geomorphic and
Hydrological
Hazards

Damage and
Failure Modes of
Highway (Standard)
Bridges Due to
Single Event,
Combined,
Consequent and
Subsequent
Multihazard Events

Combined, Consequent
& Subsequent
Multihazard Platform

Database
Information

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Earthquake

Tsunamis

Severe Wind

&/Or Rain Storm

Landslide





Load
Effects
on
Bridges







Liquefaction

Storm Surge

Debris Flow

Vessel
Collision

?

?

River Flooding

Scour

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Bridges

There are many ways to classify bridges according to



Material



Construction Method



Structural Type



Crossing Method



Span and Total Length



Etc.

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Bridges

There are many ways to classify bridges according to



Material



Construction Method



Structural Type



Crossing Method



Span and Total Length



Etc.



Concrete



Prestressed Concrete



Steel



Aluminum



Wood



Stone



Etc.

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Bridges

There are many ways to classify bridges according to



Material



Construction Method



Structural Type



Crossing Method



Span and Total Length



Etc.



Integral constructed bridge



Segmental constructed bridge

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Bridges

There are many ways to classify bridges according to



Material



Construction Method



Structural Type



Crossing Method



Span and Total Length



Etc.



Girder



Truss



Rigid frame



Arch



Cable
-
stayed



Suspension



Combined system



Etc.

Deck bridge

Half through bridge

Through bridge

Simple supported beam bridge

Continuous beam bridge

Cantilever beam bridge

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Bridge Components



Superstructure



Substructure:



Foundation

Deck system, cable, tower, upright column,
suspenders, arch rib, wind brace



Connections:

bearing

pier, abutment

Shallow: Spread foundation

Deep: Pile foundation



Etc.

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Initial Thoughts On A Framework For
Database Development



Identify Key
Parameters for Hazard
Comparison




Methodology To
Evaluate and Compare
Multi
-
Hazards Load
Effects On Bridges


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Initial Thoughts On A Framework For
Database Development

Development of Multihazard Design
Approaches and Procedures

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Summary


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.