Analysis of RCC T-beam and prestressed concrete box girder bridges super structure under different span conditions

Abstract

A bridge is a structure that provides passage over an obstacle without closing the path below. The required crossing may be for a road, rail, pedestrian, canal, or pipe. For constructing the bridges has many types of sections among which Tee beam and Box girder bridges have selected. T-beam bridges are cast-in-situ bridges, popular for short spans and economical. Similarly, the widely used box girder bridge selected which is economical for long spans, that may be either single or multi-celled girder. The type of bridge is concerned with providing maximum efficiency of material and construction technology. As the span increases, the dead load that is an important growth factor also increases. To reduce dead load, unnecessary material, which not used to its full potential, is removed from this section, which can be in the shape of box girders or cellular structures depending on whether the shear deformations neglected or not. In the present study, a two-lane simply supported RCC Tee beam girder and prestressed concrete box girder bridge analyzed and designed for dead load and IRC moving loads, where the considered moving load is of the tracked vehicle of class A-A loading. Courbon's method adopted for analysis and designing. Dead load and live load calculations have done manually. Shear force and bending moment for a vehicular load have calculated. Piguead's curves used for bending moment calculations. The main objective of this paper is to check whether both the T and box girder bridges have adopted for the assumed data with different span conditions.