Skeletal structures with members under high axial loads, defined as brittle structures, are widely used in practice. Structures in this category include space frames, transmission towers, and steel and bamboo scaffolding. The collapse of this type of structure is considerably more frequent than that of the conventional beam-column type of steel building. The structure may fail by a series of members buckling which may be initiated by a single member failure or, by global snap-through instability. In both cases, the connection stiffness plays an important role in affecting the buckling capacity of the structure. The linear analysis of this type of brittle structure is basically not different from the conventional analysis of the beam-column type of structure. However, in nonlinear analysis, their methods of analysis differ since the former requires a careful consideration of the second-order effect due to axial load. This paper details the method specially designed for elastic buckling analysis of scaffolding systems where failure is controlled by instability. Theinfluence of the connection stiffness is included in the analysis by the concept of effective length. The application of the proposed method is demonstrated in a number of worked examples.
- skeletal structures
- stability analysis
ASJC Scopus subject areas
- Civil and Structural Engineering