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Abstract

Starting from the usual conception of braced domes for the roofing of tanks, the optimization of the steel consumption was investigated as a function of the following two parameters: type of braced dome and shape of the bar sections. Four geometries were investigated namely, ribbed domes, Schwedler-type domes with simple diagonals, having the same or alternate orientation, and Schwedler-type domes with crossed diagonals. As for the sections, open (hot-rolled) sections and rectangular sections have been investigated.

The main conclusions of the research are: 1. the snow loading on half the dome is the most unfavourable loading; 2. the hollow section is more advantageous than the open one; 3. Schwedler-type domes are more advantageous than the ribbed ones (among the three variants there are no important differences); 4. a cyclic configuration of the braced dome ensures the best statical behaviour of the dome.

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A Comparison of the Structural Efficiency of Some Braced Domes

Abstract

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