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Recent Advances in 3D Non-Linear FE-Analysis of R/C and P/C Beam Structures

by Franz-Josef Ulm, GRECO Geomateriaux, Paris, France,
Jean-Luc Cl?ment, GRECO Geomateriaux, Paris, France,
Johann Guggenberger, GRECO Geomateriaux, Paris, France,



Document Type: Proceeding Paper

Part of: Structures Congress XII

Abstract:

A new simple modelling of interface problems in non-linear FE-analysis of reinforced concrete (R/C) and prestressed concrete (P/ C) structures is presented. It consists in taking account in a explicit way the relative displacements (slip) between reinforcing steel (or prestressing tendons) and surrounding concrete. In this paper, we show how to account for the phenomenon in a multi-fiber approach for 3D beam type problems, the latter being an extension of the planar multi-layer approach to the three-dimensional case.

Subject Headings: Reinforced concrete | Finite element method | Three-dimensional analysis | Concrete beams | Prestressing | Prestressed concrete | Nonlinear analysis

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