Abstract
In the preceding papers (I) (II), the aseismic capacity of steel structures without braces were discussed on. In this paper, furthermore, the aseismic capacity of low-rise steel structures composed of rigid frames with elastic and/or plastic buckling type braces arranged symmetrically in plan. First, the mechanical behaviors of a single brace subjected to alternately repeated axial loading are described in brief formulas. Second, steel structures with braces are divided into two types, i.e. rigid and flexible ones. Third, an analytical approach to the resonance-fatigue-characteristics of flexible type steel structures with braces are shown on the basis of the idealized and simplified restoring functions and hysteretic area characteristics of barce-and rigid frame-elements. Finally, evaluation criteria and procedures of the aseismic capacity and safety of steel rigid frames with braces are presented. (Table 1)
