EFFECT OF SKEW FOR VARIOUS IRC LOADINGS ON A T-BEAM BRIDGE SECTION

India is on the threshold of becoming a developed country. Naturally it is investing heavily on new bridges to improve the road / rail connectivity across the country. A bridge carry uniformly distributed dead load, vehicular live load to its surface and transfers the same to the support by flexure, shear and torsion. Bridges in India are designed on the basis of loading conditions specified by Indian Road Congress (IRC) codal provisions. Skew bridges or Curved bridgesare now-a-days designed due to space constraints prevailing in urban or densely populated areas in the form of mountainous terrain, winding river courses, unplanned construction of housing and other infrastructure. A study on variation in the stress resultants with introduction of skew in the bridge layout is thus very important to understand the complex behaviour of the structure. T-beam bridges are designed for small and medium span bridges. In this paper T-beam bridges are modelled and analysed by introducing skews for various span lengths and IRC loading conditions .Careful investigations have been carried out using CSi Bridge computer software and the results are compared graphically.