科研之友
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摘要
The ultimate behaviour of bolted connections in tubular members, such as chimneys, is studied and the interaction M-N curves are plotted, taking into account the main parameters of the problem. The proposed methodology is based on a classification of failure patterns of the L-stub main component (segmental behaviour) under compressive or axial tensile forces, considering non-preloaded bolts. Besides, the results of the theoretical analysis of the main L-shape component ultimate behaviour are compared with the corresponding obtained through finite element analysis of the constructed 3D models. Extending the local behaviour of the individual L-shape segments along the ring flange, the ultimate bearing capacity is derived, for each level of axial force, through a proposed analytical procedure and the corresponding interaction M-N curves are obtained. The parameters considered are the size and thickness of the flange and the tubular shell, the size and the location of the bolts, the quality of the materials and the amount of the applied axial load on the tubular element.
- 出版日期2014-6
