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Response of bridge structures subjected to blast loads and protection techniques to mitigate the effect of blast hazards on bridges

Descriptive

TypeOfResource
Text
TitleInfo (ID = T-1)
Title
Response of bridge structures subjected to blast loads and protection techniques to mitigate the effect of blast hazards on bridges
Identifier
ETD_1396
Identifier (type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051071
Language
LanguageTerm (authority = ISO639-2); (type = code)
eng
Genre (authority = marcgt)
theses
Subject (ID = SBJ-1); (authority = RUETD)
Topic
Civil and Environmental Engineering
Subject (ID = SBJ-1); (authority = ETD-LCSH)
Topic
Bridges--Design and construction
Subject (ID = SBJ-1); (authority = ETD-LCSH)
Topic
Bridges--Security measures
Subject (ID = SBJ-1); (authority = ETD-LCSH)
Topic
Blast effect
Abstract
Bridges are critical to the transportation system especially at the time of crises. They are essential for rescue missions, evacuations, and rapid distribution of aid and medical supplies. Bridges are highly visible and accessible structures which make them valued potential targets for terrorist attacks as their destruction could have significant impact on the nation. An efficient security system can minimize the potential of terrorism, yet it will not completely eliminate the threat. Consequently, critical bridges should be protected and designed to mitigate probable blast hazards.
The primary objective of this investigation is to analyze the effect of blast loads on critical bridge components and bridge global response, and propose protection measures for mitigating blast hazards. This investigation presents an overview of the characteristics of blast loads, pressure distributions, wave propagation and reflection, energy dissipation, and the factors affecting the behavior of structural elements subjected to blast loading.
To simplify the analysis of structural elements subjected to blast loads, blast load response spectra were developed. These spectra are used to transform the dynamic blast loads into equivalent static loads. Blast response spectra can be used to analyze and design individual structural components subjected to blast loads, estimate the required ductility, and estimate the minimum standoff distance for the probable blast hazards.
The global behavior of a typical highway bridge was evaluated using computer simulation. The bridge model was subjected to various blast scenarios applied above or below the bridge deck. The results from these computer simulations were used to identify the vulnerable components in the bridge during a blast hazard as well as estimating the magnitudes and locations of maximum shear forces and bending moments. The results from the computer simulations were compared to those from the response spectral analysis. Thus, protection measures were proposed and evaluated. Protection measures include preventive measures such as standoff distance and added security. They also include improved redundancy through utilizing multiple column bents with double and triple edge columns, using highly ductile materials, longer seat widths, doubly reinforced decks, hold-down devices, and the use of cable auxiliary systems.
PhysicalDescription
Form (authority = gmd)
electronic resource
Extent
xvii, 197 p. : ill.
InternetMediaType
application/pdf
InternetMediaType
text/xml
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references (p. 194-196)
Note (type = statement of responsibility)
by Yahia M. Tokal-Ahmed
Name (ID = NAME-1); (type = personal)
NamePart (type = family)
Tokal-Ahmed
NamePart (type = given)
Yahia M.
Role
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author
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Yahia M. Tokal-Ahmed
Name (ID = NAME-2); (type = personal)
NamePart (type = family)
Najm
NamePart (type = given)
Husam
Role
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chair
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Advisory Committee
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Husam S. Najm
Name (ID = NAME-3); (type = personal)
NamePart (type = family)
Balaguru
NamePart (type = given)
Perumalsamy
Role
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internal member
Affiliation
Advisory Committee
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Perumalsamy N. Balaguru
Name (ID = NAME-4); (type = personal)
NamePart (type = family)
Nassif
NamePart (type = given)
Hani
Role
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internal member
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Advisory Committee
DisplayForm
Hani H. Nassif
Name (ID = NAME-5); (type = personal)
NamePart (type = family)
Yong
NamePart (type = given)
Yook-Kong
Role
RoleTerm (authority = RULIB); (type = )
internal member
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Advisory Committee
DisplayForm
Yook-Kong Yong
Name (ID = NAME-6); (type = personal)
NamePart (type = family)
Coit
NamePart (type = given)
David
Role
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outside member
Affiliation
Advisory Committee
DisplayForm
David W. Coit
Name (ID = NAME-1); (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB); (type = )
degree grantor
Name (ID = NAME-2); (type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm (authority = RULIB); (type = )
school
OriginInfo
DateCreated (point = ); (qualifier = exact)
2009
DateOther (qualifier = exact); (type = degree)
2009-01
Location
PhysicalLocation (authority = marcorg)
NjNbRU
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Identifier (type = doi)
doi:10.7282/T3MS3T0P
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (AUTHORITY = GS); (ID = rulibRdec0006)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
RightsEvent (AUTHORITY = rulib); (ID = 1)
Type
Permission or license
Detail
Non-exclusive ETD license
AssociatedObject (AUTHORITY = rulib); (ID = 1)
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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Technical

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ETD
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application/x-tar
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