Study Analysis With Different Deck Slab In Mnb Using Ansys Software

Abstract

The Structural Performance Of Bridge Deck Slab Systems Is Strongly Influenced By Deck Geometry, Load Transfer Mechanism, Stiffness Distribution, And Stress Concentration Under Vehicular Loading. The Present Study Investigates The Comparative Behaviour Of Different Deck Slab Configurations In An MNB Bridge Using ANSYS Finite Element Software. Three Bridge Deck Systems Are Considered: RCC T-beam Bridge, Rectangular Box Girder Bridge, And Trapezoidal Box Girder Bridge. The Models Are Analysed Under IRC Class A And IRC Class AA Loading Conditions. The Main Response Parameters Considered In The Study Are Shrinkage, Equivalent Creep, Normal Creep, Shear Creep, Equivalent Stress, Normal Stress, And Shear Stress. The Bridge Models Are Developed With Identical Span And Width Conditions To Obtain A Rational Comparison Between The Selected Deck Slab Systems. The Results Show That Deck Slab Geometry Has A Considerable Effect On Stress Distribution And Time-dependent Deformation Behaviour. Under Class A Loading, The Trapezoidal Box Girder Bridge Shows Higher Shrinkage, Creep, Equivalent Stress, And Shear Stress Compared With The Rectangular Box Girder And RCC T-beam Bridge. Under Class AA Loading, The Trapezoidal Box Girder Still Shows Higher Shrinkage And Creep, While The Rectangular Box Girder Shows Higher Equivalent Stress And Shear Stress. The Study Confirms That ANSYS-based Finite Element Modelling Is Effective For Understanding Bridge Deck Behaviour And For Selecting A Suitable Bridge Deck Configuration During The Preliminary And Analytical Design Stage.

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