Non-linear Static and Dynamic Finite Element Analyses of Reinforced Concrete Structures
Author
de Filippo, Michele
Term
4. term
Education
Publication year
2016
Submitted on
2016-06-08
Pages
98
Abstract
This master’s thesis investigates the non-linear static and dynamic behavior of reinforced concrete structures using both analytical calculations and numerical finite element analyses. For the static case, the strength and deflections of a reinforced concrete beam are evaluated analytically in accordance with Eurocode 2 and numerically in Abaqus using shell and solid models. Concrete is represented by the Concrete Damage-Plasticity model, and reinforcing steel by an elastic, perfectly plastic model. For the dynamic case, a reinforced concrete column is subjected to the El Centro earthquake record, scaled to excite the structure’s eigenfrequency and induce resonance. Modal properties and damping are established, and time-dependent simulations are carried out to failure as well as with reduced amplitudes to examine plastic response. Results from shell and solid models are analyzed and compared, and conclusions are drawn on the efficiency and suitability of the modeling approaches. Specific quantitative findings are not included in this excerpt.
Denne masterafhandling undersøger den ikke-lineære statiske og dynamiske opførsel af armerede betonkonstruktioner ved hjælp af både analytiske beregninger og numeriske finit element analyser. I den statiske del vurderes bæreevne og nedbøjninger af en armeret betonbjælke analytisk efter Eurocode 2 og numerisk i Abaqus ved brug af skal- og solidmodeller. Beton modelleres med Concrete Damage-Plasticity, og armeringsstål med en elastisk perfekt-plastisk model. I den dynamiske del analyseres en armeret betonsøjle udsat for El Centro-jordskælvet; registreringen skaleres til at ramme konstruktionens egenfrekvens for at fremkalde resonans. Egenfrekvenser og dæmpning bestemmes, og tidsafhængige simuleringer gennemføres til brud samt med reducerede amplituder for at studere plastisk respons. Resultaterne fra skal- og solidmodeller analyseres og sammenlignes, og der drages konklusioner om modellernes anvendelighed og effektivitet. Detaljerede, kvantitative resultater fremgår ikke af dette uddrag.
[This apstract has been generated with the help of AI directly from the project full text]
Keywords