| Title |
A Study on the Strength and Deformation of Eccentrically Loaded Long Steel Columns |
| Abstract |
This paper is an experimental and analytical report on the strength and deformation of long steel colums subjected to eccentric loading.For the analysis of the strength and deformation behavior with strain hardening phenomenon of long steel columns subjected to eccentric loading, the steel columns were tested under the constant eccentric load, and an analytical method was adopted.The analytical results of equilibrium of force used for the strength evaluation by means of the actual stress-strain relationship were compared with the test results.The specimens were made from SS41 grade steel and were composed of three kinds of H-shape, Box-shape and Pipe-shape, and the slenderness ratios of each series are 60.80.100 and 120.The results are as follows:1.The analytical results about the assumed strain distribution and load-deformation relationships corresponds to the test results satisfactorily.2.The theoretical results analysed by the plastic hinge method shows good correspondence to the test results in accordence with the increase of the slenderness ratio.3.All of the specimen increased in strength in some extent after the buckling occurred, and the strain distribution of each specimen remained in plastic region throughout the compressive and tensile fibers. |