Behaviour of rectangular RACFST slender columns under eccentric compression
نویسندگان
چکیده
Abstract Experimental and numerical studies on the static behaviour of eccentrically compressed recycled aggregate concrete filled steel tube (RACFST) slender columns with rectangular cross-section are reported in this paper. Fifteen specimens were tested under eccentric compression. The factors considered experimental investigation included: 1) depth-to-width ratio (?), from 1.0 to 2.0; 2) load eccentricity ( m ), 0 0.6; 3) slenderness ? 20 40; 4) coarse (RCA) replacement r 100%. results show that failure is manifested major local buckling coving compression flange part side walls near mid-height section crushing core at same location. generally possess stable versus deformation curves including initial linear subsequent nonlinear stages before reaching peak post-peak descending stage. In addition, when other parameters keep constant, larger , smaller bearing capacity N ue has more significant effect than . Numerical simulation RACFST also carried out by a finite element analysis (FEA) model built ABAQUS, verified results. typical mechanism further revealed FEA model. Finally, simplified formulae for developed, comparison between indicates accurate predicting columns.
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ژورنال
عنوان ژورنال: Journal of building engineering
سال: 2021
ISSN: ['2352-7102']
DOI: https://doi.org/10.1016/j.jobe.2021.102236