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Incremental Collapse of Reinforced Concrete FramesSvihra, Jan January 1971 (has links)
<p> A research program is presented for assessing the plastic
collapse load and incremental collapse load of reinforced concrete
frames. This investigation attempts to establish a range of validity
of simple plastic theory when applied to the under reinforced concrete
frames and to determine the sensitivity of such structures to
variable repeated loading. </p> <p> An experimental program was conducted on 4 reinforced
concrete frames and two reinforced concrete columns. Deflections and
strains of these models of nearly prototype size were measured and
compared with predicted values at critical cross-sections. </p> <p> Resulting conclusions and recommendations for further
research are made. </p> / Thesis / Master of Engineering (MEngr)
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[en] LIMIT ANALYSIS AND OPTIMUM DESIGN OF REINFORCED CONCRETE BEAMS / [pt] ANÁLISE LIMITE E PROJETO ÓTIMO DE VIGAS EM CONCRETO ARMADOFERNANDA DANTAS SANTOS 22 January 2004 (has links)
[pt] É apresentada uma metodologia para a determinação da carga
de colapso e uma outra para o dimensionamento ótimo em
vigas de concreto armado. Para a determinação da carga de
colapso a metodologia utiliza a análise limite e o modelo
da Treliça Clássica de Mörsch. A formulação do problema é
obtida a partir dos teoremas limites de plasticidade, que
permitem escrever o problema da análise limite na forma de
programação linear (PL) e o programa LINGO é utilizado para
resolvê-lo. Para o dimensionamento ótimo o mesmo modelo da
treliça de Mörsch é utilizado e a formulação do problema
também recai num problema de programação linear que pode
ser resolvido pelo programa LINGO. A solução fornece tanto
as áreas das armaduras longitudinais como dos estribos.
Os exemplos apresentados ilustram a validade e eficiência
da formulação proposta. Os resultados obtidos são
analisados e comparados com os resultados experimentais e
com os obtidos com o uso de outra metodologia. Finalmente
são apresentadas as conclusões e sugeridas propostas para
trabalhos futuros. / [en] Methodologies for the determination of the collapse load
and for the optimal design of concrete beams are presented.
For the collapse load determination the methodology makes
use of the limit analysis and of the classical truss model
of Mörsch. The formulation of the problem is based on the
limit theorems of plasticity which allow the limit analysis
problem to be expressed as a linear programming problem
(LP) which is solved by the program LINGO. For the optimal
design, the same truss model of Mörsch is used and the
formulation also leads to a linear programming problem
which can be solved by the program LINGO. The solution
yields both the longitudinal reinforcement and the stirrups.
The examples presented illustrate the validity and
efficiency of the proposed formulation. The results
obtained are analysed and compared to the experimental ones
and to those obtained using other methodologies.
Finally, conclusions are drawn from the results and
suggestions are given for future researches in the field.
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TESTING AND ANALYSIS OF HEAVY DUTY RIVETED GRATINGSBejgum, Mahesh 05 October 2006 (has links)
No description available.
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