Steel Construction · 2011 · 24 citations · 4 references
EngineeringCivil EngineeringBridge EngineeringStructural AnalysisStructural EngineeringBridge DesignBridge StabilityCable-supported BridgesComposite BridgesStructural DesignTruss BridgesComposite Bridge DecksComposite Bridge DesignComposite Truss BridgesGirder DesignRailway BridgesStability Of Composite BridgesStructural Analysis Of Truss BridgesTruss Bridge Design
Composite truss bridges span a spectrum from continuous truss girders to cable‑stayed double‑deck structures, with recent designs addressing both road and railway traffic. The paper reviews emerging developments in composite truss bridges and presents recent road and railway bridge designs. It examines 3D tubular triangular truss decks and a 540‑m cable‑stayed bridge case study, detailing design issues and numerical/experimental analyses. Numerical and experimental results show elastoplastic redistribution of internal forces at ultimate limit states, and reveal dynamic behavior and stability characteristics under traffic loading.
Abstract Developments and new trends in composite truss bridges are reviewed, and recent designs are presented for road and railway bridges. The structural scheme may range from a continuous truss girder to a cable‐stayed bridge with a double deck for both road and rail traffic. Composite decks with 3D tubular triangular trusses for road bridges are discussed; design issues are outlined and some results for the elastoplastic redistribution of internal forces at ULS, based on recent numerical and experimental research studies, are presented. Recent designs of skew semi‐through composite trusses, for High Speed Railway, are reported in what concerns the dynamic behaviour under traffic loading and the stability of the compressed chord. The Base Case Design of a cable‐stayed bridge, 540 m long main span, with a double composite truss deck, for the new railroad crossing of the Tagus River in Lisbon, is discussed.
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Bridges with Double Composite Action
Reiner Saul · Structural Engineering International · 1996 · 31 citations