Precast concrete beam-to-column connections: emphasis on the deformability analysis / Ligações viga-pilar de estruturas de concreto pré-moldado: análise com ênfase na deformabilidade ao momento fletor

AUTOR(ES)
DATA DE PUBLICAÇÃO

2002

RESUMO

The present research deals with the study of two types of precast beam-to-column connections with emphasis on the deformability analysis. The first one is extensively used in precast concrete portal frames with sloping beams. The second one is used in multi-storey framed structures. Experimental tests on two models of each type of beam-to-column connections were done. Based on the experimental results, analytical models, based on the Component Method, were proposed and numerical simulations, based on the Finite Element Method, were developed, which provide the moment-rotation curves of the studied connections. The theoretical moment-rotation curves, for both studied connections, are in good agreement with the experimental ones. According to the results, the first connection had almost the same behaviour of a rigid one. It transmitted about 90% of the bending moment of an equivalent monolithic structure. The second connection also transmitted a good portion of bending moment. It was observed that when its semi-rigidity is considered on the structural analysis there was a significant reduction on the column base bending moment and on the foundation dimensions

ASSUNTO(S)

deformability precast concrete estruturas de concreto pórticos planos concreto pré-fabricado semi-rigidity connections ligações deformabilidade semi-rigidez concrete structures concreto pré-moldado portal frames

ACESSO AO ARTIGO

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