편심강단주의 LOAD-DEFLECTION거동에 관한 연구 ( A Study on the Approximate Analysis of Eccentric Short Steel Columns )

This paper is concerned with an approximate analysis of load-deflection relationships and maximum strength of eccentric columns(H sections and Box sections) with strong axis bending. Considering the strain hardening range, the stress-strain relationship from stub column test results was assumed to be tri-linear(Fig. 2-1) Through the numerical analysis procedure, the load-deflection curves are obtained. (Fig.3-1, 2)Except the stocky member, the maximum strength is expected to be equal to the apex on the load-deflection curve. A series of welded built-up columns-H sections and Box sections-made of SS 41 grade of steel with various slenderness ratio were to failure under same eccentric loading conditions. These experimental results were tested compared with approximate analytical curves and numerals.