Cyclic Analysis of Fix-Ended Steel Beam-Columns

by Shouji Toma, Asst. Mgr.; Office of Welding Research Lab., Kawasaki Heavy Industries Ltd., Chiba-Prefecture, Japan,
Wai F. Chen, (M.ASCE), Prof. and Head of Struct. Engrg.; School of Civ. Engrg., Purdue Univ., West Lafayette, Ind. 47907,

Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 6, Pg. 1385-1399

Document Type: Journal Paper


The paper describes an analytical model for theoretically predicting the inelastic cyclic behavior of fix-ended steel beam-columns subjected to one cycle of axial loading. The analysis is based on the hinge-by-hinge method used widely in the study of elastic-plastic behavior of steel structures. In this analysis, the solution of an elastic-plastic beam-column under cyclic and reversed loading is obtained as a sequence of elastic column solutions which follow the history of loading. Using this analytical procedure, closed form expressions are derived for axially loaded beam-columns with constant lateral loads. With these expressions, extensive numerical solutions are presented. Some of the results are compared with available tests on actual tubular beam-columns, providing the needed confirmation of the validity of the simple analytical model for practical use.

Subject Headings: Axial loads | Elastic analysis | Lateral loads | Structural behavior | Cyclic loads | Steel beams | Beam columns | Structural models

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