Effect of Joint Rigidity on Buckling Strength of Single Layer Lattice Domes

by Shiro Kato, Toyohashi Univ of Tech, Toyohasi, Japan,
Itaru Mutoh, Toyohashi Univ of Tech, Toyohasi, Japan,
Masaaki Shomura, Toyohashi Univ of Tech, Toyohasi, Japan,

Document Type: Proceeding Paper

Part of: Spatial, Lattice and Tension Structures


The present paper discusses the effect of the joint rigidity on the buckling strength of single layer lattice domes, with regular three way grids, under vertical loading. The effect of bending rigidity of joints on the overall strength of domes is investigated from three viewpoints; (1) how the joint rigidity contributes to the reduction of buckling loads, (2) how the reduction can be interrelated to compressive strength curves in terms of the generalized slenderness for the member most relevant to the overall buckling of domes, and (3) whether the strength curves will resemble those for beam-columns in tall buildings and for continuum shells, or will not. For present semi-rigid cases, by reflecting the reduction of buckling loads for perfect rigid cases on a specific modification of the generalized slenderness, the member strength curve is available in a similar way for the rigid-jointed lattice domes.

Subject Headings: Vertical loads | Rigidity | Shell structures | Structural strength | Compressive strength | Flexural strength | Buckling | Joints

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