Experimental Investigation On Elasto-Plastic Behavior Of Compression Members With An Intermediate Elastic Lateral Support

摘要

A total of 38 specimens of the eccentrically-loaded compression members elastically-braced at an intermediate point were tested, and the elasto-plastic behavior was analyzed by the finite element method using two-dimensional isoparameteric elements with 8- nodes. Experimental parameters were as follows: load eccentricity, normalized slenderness ratio (Λ=1.0,1.5,2.0 and actual slendemess ratio =240), position of the brace (ι1/ι=0.25,0.33,0.50) and brace stiffness ratio (k=1,3,5). The paper presents the test results, and discusses the effects of experimental parameters on the behavior of deflection reversal, bracing force ratio and maximum strength.