Study on Influences of Thickness of Flange of U Rib on Mechanical Behaviors of Orthotropic Monolithic Steel Bridge Deck System

Abstract

Orthotropic monolithic steel bridge deck system stiffened by U rib is very fit for high-speed railway steel bridges because of its excellent mechanical behaviors. Thickness of flange is a very important parameter of U rib and has influence on mechanical behaviors of orthotropic monolithic steel bridge deck system. Based on the engineering practice of Anqing Yangtze River Railway Grand Bridge, the kind and the extents of influences of thickness of flange of U rib on mechanical behaviors of orthotropic monolithic steel bridge deck system are studied with finite element analysis. The results show that thickness of flange of U rib has relative large positive influences on rigidity, strength and stability of orthotropic monolithic steel bridge deck system. 14~18mm is the appropriate range of thickness of flange of U rib for high-speed railway steel bridges.

Application of high-performance cementitious composites in steel–concrete composite bridge deck systems: A review

“…OSBD structure was adopted by bridge engineers in Germany at that time, benefiting from its subtle structure design that can efficiently utilize steel material, enabling lightweight and economical bridge decks without compromising strength [1]. Subsequently, plenty of research was conducted to investigate the bearing performance of OSBDs [2][3][4][5], promoting the wide use of OSBDs especially in long-span bridges. However, the fatigue crack is usually found at the dense weld seam, and the asphalt pavement layer over the steel deck is prone to cracking.…”