STABILITY OF COLUMN SUPPORTING FLAT SLAB WITHOUT BEAM GRID

Abstract eng:
Column stability of braced and unbraced building framing systems have been widely studied and very well established. But, stability of column supporting two-way flat slab without beam grid is still rather sparse. There are many different types of two-way flat slab in building structural systems. It is the intention of this study to carry out a detailed study of stability of column which support reinforced concrete flat slab building system. Computer-aided analysis based on three dimensional finite-element model consisting of columns and two-way flat slab with various layout and thickness to be used for carrying out stability studies. The buckling analysis of braced and unbraced column supporting flat-slab building may be generalized to a similar framing building in which portion of flat-slab stiffness is replaced by the stiffness of horizontal beam. It requires analytical analysis in order to decide which portion of flat slab can be counted to substitute for the stiffness of replaced beam grid. The purpose of this study is to carry out a detailed analysis in an attempt to formulate a practical and professional process for the buckling strength of columns supporting flat slab building system.

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