Comparative Study of Moment-Plastic Rotation Model of Wide Flange Steel Columns Subjected to Axial Load and Moment by Using ASCE41-13 and ASCE41-17

Abstract

In this paper, model of plastic hinge for non-linear static analysis of 10 wide-flange steel column sections under axial load and bending are comparatively studied based on both ASCE41-13 and ASCE 41-17 standards. It is found that parameters affecting the backbone of plastic hinge of wide-flange steel columns comprise of size of steel sections, unbraced length of members and axial load ratios. This study shows that the backbone response of moment-plastic rotation for wide-flange steel columns according to ASCE41-13 is not always conservative in comparison with ASCE41-17. For wide-flange steel sections that are not larger than W300x150x36.7 kg/m, ASCE41-17 instead of ASCE41-13 may yield the conservative backbone response.