Procedure for Design of Glued-Laminated Ortho-Tropic Bridge Decks.
Forest Service research paper,
FOREST PRODUCTS LAB MADISON WIS
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The most recent improvement in timber bridge design is the vertically glued-laminated panel deck, with the panels placed in a transverse direction to the stringers. Experimental evaluations showed its performance to be superior to that of the conventional nailed-laminated deck. Design methods which consider the glued-laminated deck as an orthotropic plate accurately predict its behavior. Since a laminated bridge deck is constructed from many relatively narrow panels, it is necessary to install connectors which allow the deck to act as a continuous plate. Eight different connector systems were evaluated and steel dowels are best suited for the purpose. Design criteria for dowel connectors, based on the theory of a beam supported on an elastic wood foundation, were developed. The design procedures for glued-laminated transverse decks and steel dowel connectors are presented. Modified author abstract
- Civil Engineering