Parametric Study on Effect of Curvature on Steel-Concrete Composite Bridge

Abstract

One of the most common bridge construction technologies in the current world is steel concrete composite bridges. It has these following advantages over RCC bridges i.e. economic nature, speedy construction and low construction and maintenance cost. Owing to these factors a lot of research is being done by engineers and designers on steel-concrete composite bridges. Therefore we are interested to dive into this research. For the purpose of parametric study one straight steel-concrete composite bridge and 4 curved in plan bridges having different radius of curvatures are modelled in MIDAS Civil software. The span length, number of steel I-girders, cross section and material properties all remain unchanged for parametric study purpose. The only parameter that changes is the radius of curvature of the bridge. The cross-section of the bridge consists of six steel I-girders and a concrete deck. All the models are subjected to self-weight, moving load of vehicles as per IRC 6 and their combinations. The parameters such as deflection, bending moment, shear force and torsion for different loads and load combinations are thus obtained for each positions for all the models. These responses are further used for the parametric study of the behaviour of curved bridge with respect to that of a straight bridge.