EVALUATION OF HIGH STRENGTH CONCRETE PRESTRESSED BRIDGE GIRDER DESIGN|2003

[Haseeb Jamal]

EVALUATION OF HIGH STRENGTH CONCRETE PRESTRESSED BRIDGE GIRDER DESIGN

This research study focuses on evaluating the design of HSC prestressed bridge
girders. Specifically there were three major objectives. First, to determine the current
state of practice for the design of HSC prestressed bridge girders. Second, to evaluate
the controlling limit states for the design of HSC prestressed bridge girders and identify
areas where some economy in design may be gained. Third, to conduct a preliminary
assessment of the impact of raising critical design criteria with an objective of increasing
the economy and potential span length of HSC prestressed girders.

The first objective was accomplished through a literature search and survey. The
literature search included review of design criteria for both the AASHTO Standard and
LRFD Specifications. Review of relevant case studies of the performance of HSC
prestressed bridge girders, as well all as of important design parameters for HSC were
carried out. In addition, a survey was conducted to gather information and document
critical aspect of current design practices for HSC prestressed bridges

The second objective was accomplished by conducting a parametric study for
single span HSC prestressed bridge girders to mainly investigate the controlling limit
states for both the AASHTO Standard (2002) and LRFD (2002) Specifications.
AASHTO Type IV and Texas U54 girder sections were considered. The effects of
changes in concrete strength, strand diameter, girder spacing and span length were
evaluated.

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[kowheng]

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[Jackass]

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