Structural Performance of a Four-Span Warren Truss Bridge under Horizontal Loading

Truss bridges are widely used in transportation infrastructure due to their high strength-to-weight ratio and structural efficiency. Among various truss configurations, the Warren truss system is recognized for its simple geometry and efficient load transfer mechanism through diagonal members. This study investigates the structural performance of a four-span Warren steel truss bridge subjected to horizontal loading. A two-dimensional finite element model of the bridge was developed in Abaqus to evaluate its structural response under a concentrated horizontal load of ۲۰۰ kN. The analysis focuses on the distribution of displacement and Von Mises stress within the truss members. The numerical results provide insight into the lateral stiffness and load transfer behavior of the structure under horizontal forces. The results show that the Warren truss configuration effectively resists lateral loading through axial force mechanisms in its members while maintaining overall structural stability. The findings contribute to a better understanding of the behavior of multi-span Warren truss bridges under horizontal loading and provide useful information for the design and assessment of similar bridge systems.

کلیدواژه ها:

Warren steel truss bridge ، lateral loading ، bridge systems