FLEXURAL ELASTIC BUCKLING STRESS OF BATTEN TYPE LIGHT GAUGE BUILT-UP COMPRESSION MEMBER

Modified effective slenderness ratio of built-up compression member Part 1

Abstract

 The effective slenderness ratio of light gauge built-up compression member is following the formula proposed for heavy sections; however, it is not verified that it can be adopted in light gauge. In this paper, full scale testing of light gauge built-up members are conducted. From the test results, it is shown that current Standard overestimates the buckling strength. Based on energy equilibrium theory, modified effective slenderness ratio for light gauge built-up member is derived. The validity of the proposed formula is shown by test results and parametric finite element analysis results.