Comparative Study And Behavior Of Box Girder Bridges Using Sap2000

In modern highway system normally box girder bridges are used because they are structurally efficient, cost effective and aesthetically pleasing too. The non-uniform stress distribution of box girder  section in transverse and longitudinal direction gives the complex behavior, most of the recent researchers suggested that the FEM method is best suitable for analyzing box girder bridges. According to the Indian Road Congress (IRC) provisions, linear analysis of Rectangular, Circular and Trapezoidal box girders has performed by using finite element analysis software i.e. SAP2000 for Dead Load (Self Weight), IRC Class 70 R loading and IRC Class A live loading for maximum eccentricity case. It has been analyzed that how the box girders behave with uniform depth increments. For different parameters such as longitudinal bending stress, shear stress and deflection. The accuracy of results and validation of work has been checked by comparing SAP2000 results with manual results for all sections of box girders. The comparative study has carried out  for parameters like longitudinal and transverse bending stresses, shear stress distribution and deflection in girder. For analysis of box girders effectiveness of four nodded shell element is alsochecked.