Transcription of ENCE717 – Bridge Engineering Concrete Bridges …
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ENCE717 – Bridge Engineering Concrete Bridges …
1 ENCE717 Bridge EngineeringReinforced and Prestressed Concrete BridgesChung C. Fu, , (http: ) Concrete Bridges1. Reinforced Concrete (RC) Bridges ( )2. Prestressed Concrete (PC) Bridges ( )i. Precast Pre-tensioned Concrete Bridgesii. Precast/Cast-in-place post-tensioned Concrete Bridgeiii. PC Bridge Modelingiv. PC Bridge Load Rating3. Curved Concrete Bridges ( )Portland Cement Types in BridgesThe AASHTO Specification M85 lists ten types of portland cement I IA Normal, II Moderate sulfate IIA Moderate sulfate resistance, II(MH) Moderate heat of hydration, moderate sulfate II(MH)A Moderate heat of hydration, moderate sulfate resistance, III High early IIIA High early strength, IV Low heat of V High sulfate resistanceHigh-Performance Concrete in Bridges High-Strength Concrete in excess of ksi spec
Principle and Modeling of Concrete Beam-Slab Bridges • Linear elastic modeling – production purposes It can be simplified as a beam or a grid The equivalent stiffness can be calculated from equation 2.6 for rectangular void
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