PERILAKU KOLOM KOMPOSIT TABUNG BAJA BERISI BETON NORMAL AKIBAT BEBAN AKSIAL SENTRIS DAN EKSENTRIS

Abstract

The columns are an important part of the structure.Column continued load from of plate and beams until
to foundation.The column is a structural component that is dominant receiving axial loads. Composite column
in this review is a steel column which is made from tube or steel pipe and filled with structural concrete. This
research is carried out to understand the properties of the behavior of composite columns of normal concrete
casted in cylinder steel tube; to understand the effect of variations of the slenderness ratio of the loaddeflection
and strength correlations as well as understanding failure behavior of normal concreted steel tube
composite columns with a variation of the eccentric loads. The preparation of the test specimen is based on
the variation of the ratio of tube thickness (D/t), the slenderness ratio (L/D), and the Eccentric ratio (e/D).
Test specimen consists of 15 columns of concrete core, 15 steel pipe columns, 21 composite columns of
normal centric concreted steel pipe and 18 composite columns of normal eccentric concreted steel pipe which
then loaded centric axial and eccentric.The results show that the capacity of the composite columns is overall
higher about 7%-26% rather than the algebraic sum of the capacity of its components (steel tube and core
concrete). The pattern collapse composite columns of normal concreted steel pipe due to centric and eccentric
loads showed shear failure and axial and is local. But for the eccentric column is only one side of the crosssection
and only the tube steel buckle comes together with the concrete core suffered spall at the same
location.