Comparative Structural Analysis Of Rcc Deck Bridge And Psc Girder Bridge Using Staad-pro Under Irc Loading

Abstract

Highway Bridges Are Important Elements Of Transportation Infrastructure, And The Selection Of A Suitable Bridge Superstructure Directly Affects Structural Safety, Serviceability, Durability, And Economy. In Indian Bridge Construction, Reinforced Cement Concrete (RCC) Deck Bridges And Prestressed Concrete (PSC) Girder Bridges Are Commonly Used For Small And Medium-span Applications. The Present Research Paper Focuses On The Comparative Structural Analysis Of An RCC Deck Bridge And A PSC Girder Bridge Using STAAD-Pro Under IRC Loading Conditions. A Two-span Continuous Bridge Of 40 M + 40 M Span Arrangement With A Total Length Of 80 M, 10.5 M Carriageway Width, 250 Mm Deck Slab, And Three Longitudinal Girders Is Considered For Analysis. Both RCC And PSC Models Are Developed With Identical Geometry, Support Conditions, And Loading Arrangement To Ensure A Fair Comparison. Dead Load, Superimposed Dead Load, IRC Class AA Tracked Vehicle Load, And IRC Class A Wheeled Vehicle Load Are Applied Using STAAD-Pro Moving Load Generation. The PSC Model Includes Prestressing Force Applied To The Longitudinal Girders To Study The Effect Of Post-tensioning. The Structural Responses Are Compared In Terms Of Bending Moment, Shear Force, Support Reaction, Plate Stress, And Mid-span Deflection. The Results Indicate That The PSC Girder Bridge Provides Better Serviceability, Reduced Tensile Stress, And Improved Deflection Control Compared With The RCC Bridge. Therefore, PSC Is Found More Suitable For The Selected Medium-span Continuous Bridge Configuration.

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