Computer Program for Comaprative Study of the Analasis and Design of Prestressed Concrete Box Girder and Plate Girder Highway Bridges
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Date
2016-11
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Addis Ababa University
Abstract
Planning and designing of bridges is part art and part compromise, the most significant
aspect of structural engineering. One of the initial choices the designer should make is to
select the most appropriate bridge type for the site. While this choice is not always straight
forward, selecting the right structure type is probably the important phase of designing a
cost-effective bridge. The various types are ideally suited for different span lengths. For
instance, on different standards, for spans ten to fifty meters cast in Place Post Tension
Box Girder Bridges are usually chosen where as for spans ten to one hundred twenty
meters Steel Plate Girder Bridge is preferred to be used respectively.
This study focused on developing computer program for the analysis and design of Cast in
Place Post Tension Box Girder and Steel Plate Girder Bridges, for solving the design
problem of economical span and demarking on the base of cost analysis.
A comparative study based on cost of materials is conducted to select and identify the
economical span range of Cast in Place Post Tension Box Girder and Steel Plate Girder
Bridges. The program is developed using visual Studio 2012. The developed program is
illustrated using particular examples for both types of bridges. The study has come with
solution based on the current construction prices. As per the study based on the current
material cost seventy-meter span is the demarcation span for the two types of bridges.
Within the overlap span length of the two bridges, Cast in Place Post Tensioned Box
Girder Bridge is economical up to seventy-meter and beyond seventy-meter Steel Plate
Girder Bride be economical.
Keywords: Bridge, cost effective, cast in place post tensioned box girder, steel plate
girder
Description
Keywords
Bridge; cost effective; cast in place post tensioned box girder; steel plate girder