• Parag Tatya Jagtap

The horizontally curved prestressed concrete box girder bridges are extensively used due to structural efficiency, serviceability, excellent stability, aesthetic appearance and economy. Box girder has an additional property of large torsional stiffness and resistance to corrosion. Due to various geometric complexities and interaction between bending and torsion it becomes challenging to analyze this bridge deck. In this paper, horizontally curved prestressed concrete Rectangular and Trapezoidal box girder bridge deck are studied by using finite-element modelling and analysis. For modelling and analysis of structure MIDAS CIVIL 2010 software is used. Varying sectional geometry and Material properties are constant in all direction, while angle of curvature varies from 60° to 120° with different radius of curvature viz. 30m, 40m and 50m. The results of analyses show reduction in forces such as bending moment and torsion considering various curvature angles and radii of curvature along with consideration of trapezoidal box girder section. Also increased deflection and stresses in rectangular box girder are optimized by using trapezoidal box girder. Comparison of results of forces, deflection and stresses without prestressing and with prestressing shows that trapezoidal section gives significant performance.

Curved box girder, Finite element analysis, Prestressing, Varying sectional geometry, MIDAS CIVIL.

"Comparative Analysis of Horizontally Curved Prestressed Concrete Multi-Cell Box Girders", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.40-50, May-2019, Available :http://www.jetir.org/papers/JETIR1905O07.pdf

"Comparative Analysis of Horizontally Curved Prestressed Concrete Multi-Cell Box Girders", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp40-50, May-2019, Available at : http://www.jetir.org/papers/JETIR1905O07.pdf