Abstract
Abstract Tests were carried out on 12 hollow circular columns of composite shell walls with a view to investigating their behaviour when subjected to eccentric end compressive forces. The cross-section of the columns consists of two concentric thin steel shells, and the ring-shaped space between then is filled with either grout or microconcrete. The columns have a buckling length of about 4 m, and the results of the tests are reported here. The experimental failure loads are compared with the predictions of the British Standard BS 5400, and also with the results of a finite element analysis. The test results reported here confirm the viability of such novel columns as a practical solution to unusual situations. The results also emphasize the need for experimental investigations before the application of the British Standard BS 5400 to the design of composite columns of unusual cross-sections.
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