Nonlinear analysis of reinforcement on concrete elements
Author
Ionita, Lucian-Aurelian
Term
4. term
Education
Publication year
2016
Submitted on
2016-06-08
Pages
79
Abstract
This thesis examines how reinforcement influences the load-bearing capacity and deformations of concrete elements with simple geometries. It combines an analytical approach based on Eurocode with a nonlinear 3D finite element model in Abaqus (Concrete Damage Plasticity) to compare predictive differences. Beams and columns are analyzed both without reinforcement and with longitudinal reinforcement, and the effects of stirrups and bent reinforcing bars are investigated. The elements are assumed simply supported, and geometric symmetry is used to simplify the models. The study focuses on ultimate capacity and deflections/deformations, and compares outcomes from the analytical and numerical models. The scope is limited to simple cross-sections and reinforcement layouts, a single concrete class, and no experimental validation. A comparison of the two models and their results underpins the conclusions; detailed findings are not included in this excerpt.
Dette speciale undersøger, hvordan armering påvirker bæreevne og deformationer i betonelementer med simple geometrier. Arbejdet kombinerer en analytisk tilgang baseret på Eurocode med en numerisk, ikke-lineær 3D-finite element model i Abaqus (Concrete Damage Plasticity) for at vurdere forskelle i forudsigelser. Der gennemføres beregninger for bjælker og søjler både uden armering og med længdearmering, og indflydelsen af bøjler samt bøjede armeringsstænger belyses. Elementerne antages simpelt understøttede, og geometrisk symmetri udnyttes for at forenkle modellerne. Analysen fokuserer på lastbæreevne og nedbøjninger/deformationer, og resultaterne fra de analytiske og numeriske modeller sammenlignes. Projektets afgrænsninger omfatter enkle tværsnit og armeringsgeometrier, én betonklasse og fravær af eksperimentel validering. En sammenligning af modellerne og deres resultater danner grundlag for de endelige konklusioner; detaljerede resultater er ikke gengivet i dette uddrag.
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