10 March 2009
10 March 2009
Composite Advantage has developed a fibre reinforced polymer (FRP) composite deck product for long span bridge applications designed to give bridge owners and engineers maximum design flexibility to meet standard and unique specifications.
The composite product is especially targeted at long span lift, bascule, steel truss or steel grate bridges with requirements for reduced weight or rural bridge locations where faster installations can save long detour time and costs.
In addition to fast installation and lighter weight, CA say that their composite deck product provides corrosion resistance, low maintenance and a long life cycle. CA builds its decks with a sandwich construction of fibreglass facing skins and a fibre reinforced core of redundant shear webs in both longitudinal and transverse bridge directions. CA moulding process allows the manufacturer to incorporate a range of design options and eliminates the need for tooling which can constrain deck panel dimensions.
Panels can be manufactured up to 52 feet long and panels are typically placed transversely across the bridge to transfer loads to the superstructure girders. CA can design its FRP panels to provide specified stiffness in both longitudinal and transverse bridge directions and depths can be designed to match the elevation of other components. Eliminating the need for heavy equipment, panels are generally placed starting at one abutment with light equipment such as an excavator. The equipment is able to move across the panels as they are placed. Connected to the superstructure from the top, different connection options are available and typical wear surfaces such as asphalt or polymer aggregate can be used.
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