Abstract: The design of a highway bridge is critically dependent on standard norms of a particular region or country and criteria like loadings and support conditions. Naturally, the importance of highway bridges in a modern transportation system would imply a set of rigorous design specifications to ensure the safety, quality and overall cost of the project. This paper discusses the parametric study of two different cross-sections of box-girder for same loading conditions to find the most economical cross-section. The design standard of India, IRC was followed in design of Box-girder superstructures subjected to IRC class AA loading. Optimized Cross-sections was found by comparing the different design parameters. As result of this exercise it was found that bending moment and stresses for self-weight and superimposed dead load were different for different cross-section. The cross section with minimum value of bending moment requires less steel to counter the bending stresses. Less reinforcement leads to the most economical cross-section for box girder.
The result shows the multi cell box girders are costlier as compare to the single cell box girder, when the loading and support condition were kept same for both the cross-section. Analysis is carried out using the MIDAS Civil Software which is based on finite element method of analysis.
Keywords: Pre-stressed Concrete, Box-girder, and IRC loading.
Title: Design and Analysis of Prestressed Concrete Box Girder by Finite Element Method (4 Cells & 1 Cell)
Author: Mayank Chourasia, Dr. Saleem Akhtar
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
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