Analysis of Composite Steel Truss Bridge for different Span to Depth Ratio

Abstract

Combination of steel and concrete structures called composite structures is widely used in bridge engineering. There are many advantages of combining these two-material and bringing the structure as a composite structure. The composite bridge leads to a high span to depth ratio, minimizes the deck slab deflection, and maximizes the bridge stiffness ratio. In this paper we are studying a single Span Steel truss bridge with a 300mm thick concrete deck slab. The goal of this research is to regulate the design aspects of variable parameters by varying the height to span ratio (H/L) of the truss bridge type and monitoring the deflection of the deck slab. The stringer beam flange's thickness is the variable parameter considered for an effective H/L ratio during the Steel Bridge review. Steel through-truss (composite bridge) analysis has been done by using Structural Analysis Program software (SAP2000). IRC Class AA tracked vehicle load and wind load is considered for analysis.