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Analysis of T-Beam Girder Bridge Using Grillage Analysis

Ms Nethravathi. R, Dr. H. Eramma, Mr Gowda M M

Abstract


An attempt has been made to study the behaviour of T-beam bridges with respect to Bending moment, Shear force and Joint reaction force under standard IRC loadings. The varying span chosen for study are 18m, 21m and 24m for two lane and three lane analysis. The modelling and analysis of T-beam Girder Bridge by using SAP2000 Software and the analysis also carried out by Grillage analogy method. After analysis the results found that, in two lane analysis, Bending moment and Shear force of 31.59% and 25.77% respectively, is more in outer girder as compared to inner girder. In three lane analysis, Bending moment and Shear force of 39.48% and 46.63% respectively, is more in. An attempt has been made to study the behaviour of T-beam bridges with respect to Bending moment, Shear force and Joint reaction force under standard IRC loadings. The varying span chosen for study are 18m, 21m and 24m for two lane and three lane analysis. The modelling and analysis of T-beam Girder Bridge by using SAP2000 Software and the analysis also carried out by Grillage analogy method. After analysis the results found that, in two lane analysis, Bending moment and Shear force of 31.59% and 25.77% respectively, is more in outer girder as compared to inner girder. In three lane analysis, Bending moment and Shear force of 39.48% and 46.63% respectively, is more in outer girder as compared to inner girder. In both two lane and three lane analysis, 50% and 56% of Bending moment is more in pier cap than compared to pier. Similarly 50% of shear force is more in pier cap than compared to pier outer girder as compared to inner girder.

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References


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