Nonlinear Analysis of External Prestressed Bridges

by Gregory Fenves, Univ of Texas at Austin, Austin, TX, USA,



Document Type: Proceeding Paper

Part of: Electronic Computation

Abstract:

Finite element formulations for analysis of the overall response of concrete bridge girders prestressed with external tendons is described. The analytical procedure includes several nonlinear effects that develop in the response of external prestressed bridges: cracking and nonlinear stress-strain behavior of concrete, yielding of passive steel reinforcement, yielding of prestressing tendons, and opening of joints between bridge segments. The nonlinear force-displacement relationships for a beam, external tendon, and joint element are presented, and solution procedures are discussed.

Subject Headings: Concrete bridges | Girder bridges | Prestressing | Nonlinear analysis | Finite element method | Tendons | Concrete beams

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