A new concept of orthotropic steel bridge deck

Abstract

Abstract A new concept of orthotropic steel bridge deck is proposed to improve its durability and economy. It is suggested to hot-roll the longitudinal ribs. Thus, the ribs can be made larger and with a more effective cross section that is not possible for cold bent ribs. Together with a thicker top plate these ribs can be spaced 800 mm apart and span 8 metres or longer. This will significantly reduce the cost of fabrication of orthotropic decks while the unit weight per square metre remains practically the same. An orthotropic deck with such a configuration will be more economical and more durable. Keywords: bridgesconstructiondurabilityeconomysteel structuresstructural optimisation