EXPERIMENTAL STUDY ON THE BEHAVIOR OF COMPOSITE COLUMNS SUBJECTED TO COMPRESSION AND BENDING / ESTUDO EXPERIMENTAL DO COMPORTAMENTO DE PILARES MISTOS SUJEITOS A FLEXO-COMPRESSÃO

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

Composite columns are a structural members subjected to compression and bending, made of concrete and structural steel. One particular type of composite column consists of rectangular steel hollow sections completely filled with concrete and reinforcing bars, which is the type of column considered in this work. One of the advantages of this column is the construction facility. The objective of this work is to study experimentally the behaviour of composite columns when subjected to combined compression and bending. Initially a series of tests of composite specimens was carried out in order to obtain the stress-strain curve for the concrete confined by the steel section. Following that, 15 composite columns were tested with the purpose of studying the effect of the buckling length, load eccentricity and reinforcement ratio on the column strength. The experimental results were compared to theoretical resistances calculated by the NBR 14323 and EuroCode 4 Code Requirements. In general, a good agreement was found between the experimental and theoretical results.

ASSUNTO(S)

concreto armado slender columns reinforced concrete pilares mistos pilares esbeltos composite columns

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