STUDY ON STRENGTH AND STIFFNESS OF NON-DIAPHRAGM STEEL TUBES USED WITHIN RC COLUMN-STEEL BEAM JOINTS

Abstract

The purpose of this study is to clarify strength and stiffness for nondiaphragm steel tubes used within RC column-Steel beam joints. This paper presents the results of tensile test for element specimens of the steel joint. The specimen consists of a nondiaphragm steel tube and steel beam flanges for the sake of deformation behavior in the outof-plane direction of the non-diaphragm steel tube. Moreover this paper presents the validity and practicality of the proposal estimate equations for plastic strength, maximum strength and stiffness of the specimens under tensile load by using of yield line theory and FEM analysis in order to use of evaluating strength and stiffness of the steel joint within the RC column.