Comparative Analysis of Truss Bridge by Replacing Solid Sections with Hollow Sections

Abstract

Steel Truss Bridges are often used in construction of railway and road bridges. Truss is a rigid structure and transfers the load from a single point to the wider area that’s why it is preferred over other types. Bridges comprising solid sections often results in expensive work and difficulty in transporting from one place to other. It has been found that hollow sections have greater radius of gyration that results in greater compressive strength. During the design of truss bridge, we have to check the effective length and other parameters of the members which don’t hinders the properties of the hollow sections that results in buckling. We will first analyse the bridge on ANSYS with solid sections and then replace it with hollow sections and compare the results. If in case hollow sections cannot perform effectively then we will do the partial replacement of the sections that are in compression. According to the study, hollow section will not create problem in tension part. After the completion of software analysis, we proceed to the modelling part. We compare the solid and hollow sections practically by modelling bridges on a smaller scale.