Comparison Of Prestressed Curved Multi-Cell Box Girder Bridge With Composite Trussed Bridge

Abstract

Due to explosive industrial growth in urban areas of India there has been a tremendous increase in traffic not
only in urban areas but also on highways. For easy of traffic flow in urban areas flyovers have become a necessity. For
the large spans the traditional beam and slab construction leads to an uneconomical solution and is also time consuming
construction technology. To minimize the cost and time of the construction different types of precast girder section are
developed. To achieve more economy pre-stressing is done to these girders usage of box girders leads to better stability as
compared to conventional construction. To achieve more economy composite section can be used.In this work an attempt
is being made to compare the economics of using composite trussed sections as against conventional pre-stressed box
girders for a curved segment of a flyover. For analysis purpose of box girder and composite trussed bridge STAAD-pro is
used. In terms of cost the composite bridge works out to be uneconomical but this is offset by many other advantages.